Freewheel Clutches. Backstops Overrunning Clutches Indexing Freewheels. North American Edition 2015/2016

Transcription

1 Clutches Backstops Overrunning Clutches Indexing s North American Edition 2015/2016 RINGSPANN Registered trademark of RINGSPANN GmbH, Bad Homburg

2 Table of Contents Technology Introduction Page Introduction Design and Function of s Applications of s Applications for s Types to extend service life Determination of Selection Torque Complete s Used as With for bolting to the face FRS and FRSG with sprags FRX and FRZ with sprag lift-off X or lift-off Z with arm FRXF with sprag lift-off X, sealed grease lubricated ball bearings FRHD with sprags FRHM with sprags FA with sprags and grease lubrication with arm and clamping collar or mounting flange RFB with sprags and grease lubricated ball bearings with shaft coupling FR CA with sprags Accessories for Complete s FR Backstops Overrunning Clutch Indexing bearing support bore Page Page Torque Arms TA End Covers Internal s Used as With for press fit on the outer ring ZZ with sprags, bearing supported ZZ 2RS with sprags, bearing supported and sealed ZZ P2RS with sprags, bearing supported and sealed ZZ P with sprags, bearing supported for keyway connection on the outer ring ZZ PP with sprags, bearing supported RC with sprags specifically designed as interchange backstops for Dodge reducers RCD with sprags Interchange Charts Backstops Overrunning Clutch Indexing bearing support bore Page Dodge Standard 33 Page for Marland, Formsprag, Morse /EPT and Renold with RINGSPANN s FRHD Series - for Formsprag, Marland, Falk, Stephens Adamson and Morse Questionnaires Page for selecting RINGSPANN Backstops for selecting RINGSPANN Overrunning Clutches for selecting RINGSPANN Indexing s Issue 09/2015 Technical details subject to change without notice. Dodge is a registered trademark of Baldor Electric Company. Morse is a registered trademark of Borg Warner

3 Introduction RINGSPANN GmbH has been in business for over 70 years and is a world leader in Power Transmission and Workholding Technology. RINGSPANN CORPORATION, as a wholly owned subsidiary of RINGSPANN GmbH, designs, manufactures and assembles sprag and roller clutches mainly for the North American market. With innovative German engineering and American ingenuity, RINGSPANN CORPORATION offers the winning combination of quality products for your needs. Products contained in this catalog represent RINGSPANN CORPORATION s standard freewheel clutches. Located in a 20,000 sq. ft. manufacturing facility, RINGSPANN CORPORATION can readily design new or modify existing products to suit your application. The RINGSPANN CORPORATION service advantage: The RINGSPANN CORPORATION design advantage: Detailed application support backed by over 70 years of experience. American design and manufacture Direct sales and service from the manufacturer 24 hour emergency service North American industry leader for - Price - Delivery - Customer service - Quality 3 Patented sprag cage designs for increased and maximum life in a minimum space Sprag Lift off X and Z for infinite, maintenance free life Individual springs on every sprag to provide added security against failures

4 Design and Function of s s are machine elements with particular characteristics: In one direction of rotation there is no contact between the inner and outer ring; the freewheel is in freewheeling operation. In the opposite direction of rotation there is contact between the inner and outer ring; in this direction it is possible to transmit. For example the outer ring of the freewheel shown in figure 4-1 can freewheel clockwise while the inner ring is stationary. If, however, the outer ring is turned in the opposite direction, there is contact between the inner and outer ring and the inner ring is driven (driving operation). s are used as: Backstops Overrunning Clutches Indexing s s can fulfill these functions complete - ly automatically in the most diverse machines. No mechanical or hydraulic operating equipment is required, such as externally actuated clutches or brakes. s consist of an inner and an outer ring between which clamping elements are arranged. Clamping elements can be sprags or rollers. We differentiate as follows: s with bearing support and s without bearing support. For a freewheel to function, concentric alignment of the inner and outer ring is required. In the case of freewheels without bearing support, concentric alignment must be provided by the customer. RINGSPANN freewheels are an indispensable design element in the machine building industry. Many designs are only economical if freewheels are used. The freewheel as an automatic driving element is preferred to conventional solutions because it offers the following significant advantages: safe efficient high degree of automation Inner ring Locking direction or driving operation Clamping elements (Sprags or Rollers) ing direction or freewheeling operation Outer ring 4-1 With more than 50 years experience in the development, production and sales of freewheels, RINGSPANN offers the most comprehensive range of freewheels. A global network of subsidiaries and sales agencies ensures the best possible personal on-site service. Assembly and production facilities in various countries provide fast, reliable delivery. Clamping elements (sprags in this case) Ball bearing Outer ring Clamping elements (sprags in this case) Outer ring Seal Inner ring Inner ring with bearing support without bearing support 4-2 4

5 Applications of s Backstop s are used as backstops if reverse rotation of the operating equipment needs to be prevented. In many machines and installations, for technical safety or functional reasons, it is necessary to ensure that the operating equipment is in just one specific direction of rotation. Backstops are used where legal stipulations require a mechanical safety device be installed for the operation of conveyor systems. The normal operating mode of a backstop is freewheeling operation; the locking ( transmission) is performed at zero speed. The immediate engagement of the clamping elements ensures the required high operating safety. ing operation In general, backstops are used where the inner ring freewheels and the stationary held outer ring prevents reverse rotation (figure 5-1). ing operation The more complicated designed backstops where the outer ring freewheels and the stationary held inner ring prevents reverse rotation are rarely used today (figure 5-2). Overrunning Clutch The overrunning clutch engages machines or machine parts and automatically interrupts their contact as soon as the driven part of the overrunning clutch is turned faster than the driving part. In many cases, this can replace a more expensive externally actuated clutch. With overrunning clutches the engagement takes place in the driving operation ( transmission), while in freewheeling operation the transmission between the inner and outer ring is interrupted. In driving operation the speeds of the inner and outer ring are equal, while in free - wheeling operation they are different. ing operation Driving operation Figure 5-3 shows an overrunning clutch where in driving operation the power flow is transferred from the inner ring to the outer ring and in freewheeling operation the outer ring overruns the inner ring at a higher speed. ing Driving 5-3 operation operation 5-4 Figure 5-4 shows an overrunning clutch where in driving operation the power flow is transferred from the outer ring to the inner ring and in freewheeling operation the inner ring overruns the outer ring at a higher speed. Indexing The indexing freewheel transmits a back and forth motion into a stepped rotation (indexed feed). The RINGSPANN indexing freewheel enables an infinitly adjustable setting of the feed, for precise and quiet operation. Driving operation ing operation Figure 5-5 shows an indexing freewheel where the outer ring makes the back and forth motion and the inner ring carries out the indexed feed. Driving ing operation operation Figure 5-6 shows an indexing freewheel where the inner ring makes the back and forth motion and the outer ring carries out the indexed feed. 5

6 Applications for s Gear units Electric motors Gear motors Inclined conveyors Elevators Bucket elevators The backstop prevents reverse rotation of the drive of a conveyor installation if the power fails or the motor is turned off. The backstop prevents reverse rotation of the conveyor load if the power fails or the motor is turned off. Areas of application for Overrunning Clutches Textile machines Printing machines Fans During normal operation of textile or printing machines, the overrunning clutch separates the auxiliary drive which is used as a starter from the main drive. If fans are turned off, the overrunning clutch prevents the flywheel mass from rotating the drive. Areas of application for Indexing s Textile machines Printing machines Packaging machines Filling plants The indexing freewheel generates an indexed feed in textile and printing machines. The indexing freewheel is used in packaging machines and filling plants for an indexed feed. 6

7 Fans Pumps Compressors The backstop prevents the motor from reverse rotation under the back pressure when it is turned off. The backstop prevents the motor from reverse rotation under the back pressure when it is turned off. Pumps Generators Roller conveyor In multimotor drives the overrunning clutch disengages the inactive or lower speed drive. The overrunning clutch ensures that the conveyed material can be pushed or pulled faster over the rollers than the speed of the drive. High voltage switches Seed spreader In high voltage switches for tensioning a spring, the indexing freewheel is used in the place of a reduction gear. The indexing freewheel replaces a reduction gear in seed spreader. 7

8 Types to extend service life Standard type Type with sprag lift-off X Type with sprag lift-off Z For universal use To extend service life using sprag lift-off for high speed rotating inner ring To extend service life using sprag lift-off for high speed rotating outer ring Backstop Up to medium speeds during freewheeling operation (inner or outer ring freewheels) Up to very high speeds during freewheeling operation (inner ring freewheels) Up to very high speeds during freewheeling operation (outer ring freewheels) Use as Overrunning Clutch Up to medium speeds during freewheeling operation (inner or outer ring overruns) Up to very high speeds in driving operation (outer or inner ring drives) Up to very high speeds during freewheeling operation (inner ring overruns) Low speeds in driving operation (outer ring drives) Up to very high speeds during freewheeling operation (outer ring overruns) Low speeds in driving operation (inner ring drives) Indexing Up to a medium total number of actuations In addition to the standard type, RINGSPANN has developed other types to extend service life for freewheels with sprags. The table above lists the recommended application conditions for these types. Type with sprag lift-off X The sprag lift-off X is used for backstops and overrunning clutches, provided that in free - wheeling operation the inner ring is rotating at high speed and with overrunning clutches that the driving operation is at a low speed. In freewheeling operation, the centrifugal force F C causes the sprag to lift off from the sprag track of the outer ring. In this operating state, the freewheel operates wear-free with unlimited service life. Figure 8-1 shows a freewheel with sprag lift-off X in freewheeling operation. The sprags, which are supported in a cage connected to the inner ring, rotate with the inner ring. The centrifugal force F C that is applied in the center of gravity S of the sprag turns the sprag counterclockwise and rests against the support ring of the cage. This results in the gap a between the sprag a Cage and the sprag track of the outer ring; the freewheel works with out contact. If the inner ring speed decreases to such an extent that the effect of the centrifugal force on the sprag is less than that of the spring force F F, the sprag again S F C F F Support ring ing direction or freewheeling operation Locking direction or driving operation S Pivot point rests on the outer track and the freewheel is ready to lock (figure 8-2). If used as an overrunning clutch, the driving speed must not exceed 40% of the lift-off speed. Type with sprag lift-off Z The sprag lift-off Z is used for backstops and overrunning clutches, provided that in freewheeling operation the outer ring is rotating at high speed, and with overrunning clutches that the driving operation is at a low speed. In freewheeling operation, the centrifugal force F C causes the sprag to lift off from the sprag track of the inner ring. In this operating state, the freewheel operates wear-free with unlimited service life. ing direction or freewheeling operation Cage a F C S F F Locking direction or driving operation S Pivot point Figure 8-3 shows a freewheel with sprag lift-off Z in freewheeling operation. The sprags rotate with the outer ring. The centrifugal force F C that is applied in the centre of gravity S of the sprag turns the sprag counterclockwise and rests against the outer ring. This results in the gap a between the sprag and the sprag track of the inner ring; the freewheel works without contact. If the outer ring speed decreases to such an extent that the effect of the centrifugal force on the sprag is less than that of the spring force F F , the sprag again rests on the inner track and the freewheel is ready to lock (figure 8-4). If used as an overrunning clutch, the driving speed must not exceed 40% of the lift-off speed. 8

9 Determination of Selection Torque Selection for Backstops Bringing a loaded inclined conveyor, an elevator or a pump to a standstill is a highly dynamic process that incurs high peak s. These peak s are critical in the selection of the backstop. The determination of peak s in the case of locking is more accurate by using a rotational vibration analysis of the entire system. This requires a knowledge of rotational masses, the rotational rigidity and the excitation moments that occur in the system. In many cases, a vibrational calculation is too time consuming or you may not have all the necessary data in the configuration phase available. In this case, the selection M A of the backstop should be determined as follows: M A = 1.75 M L [] Often you only have the figures for the motor nominal output P 0 [hp] available. Then: M A = F 5250 P 0 /n SP [] In these equations: M A = Selection of the backstop [] M L = Static backdriving of the load referring to the backstop shaft [] P 0 = Nominal power of motor [hp] n SP = Speed of backstop shaft [] F = Selection factor (refer to table) After calculating M A the backstop size must be selected in accordance with the catalog tables in such a way that in all cases this applies: M N M A M N = Nominal of the backstop in accordance with the table values [] It must be noted that, with a direct motor start in the locking direction of a backstop, very high peak s can occur which in turn can destroy the backstop. Approximate values for F: Type of installation F Conveyor belts, angle up to Conveyor belts, angle up to Conveyor belts, angle up to Conveyor belts, angle up to Conveyor belts, angle up to Screw pumps 1.51 Ball mills, drying drums 1.26 Bucket conveyors, elevators 1.48 Hammer mills 1.51 Fans, Ventilators 0.49 Selection for Overrunning Clutches M A = K M L In this equation: M A = Selection of the freewheel K = Operating factor (refer to table) In many cases where overrunning clutches are being used, dynamic processes occur that cause high peak s. In the case of overrunning clutches, the s that occur during start up must be observed. The peak s when starting up can, in the case of asynchronous motors especially when accelerating large masses and when using elastic couplings significantly exceed the calculated from the motor pull-over. The conditions for internal combustion engines are similar. Even in normal operation, their degree of irregularity, peak s can occur that are considerably greater than the nominal. The prior determination of the maximum occurring is carried out more accurately by using a rotational vibration analysis of the entire system. This, however, requires a knowledge of the rotating masses, the rotational rigidity and all of the excitation moments that occur on the system. In many cases, a vibrational calculation is too time consuming or you may not have all the necessary data in the configuration phase available. In this case, the selection M A of the overrunning clutch should be determined as follows: M L = Load for constant rotating freewheel: = 5250 P 0 /n FR P 0 = Nominal power of motor [hp] n FR = Speed of the freewheel in driving operation [] After calculating M A the freewheel size must be selected in accordance with the catalog tables in such a way that in all cases this applies: M N M A M N = Nominal of the freewheel in accordance with the table values [], Approximate values for operating factor K : Type of driver Electric motors with low start up impact (e.g. DC motors, asynchronous motors with slip rings or soft start couplings), steam turbines, gas turbines Electric motors with considerable start up impact (e.g. synchronous or asynchronous motors with direct start) Piston engines with more than two cylinders, water turbines, hydraulic motors Piston engines with one or two cylinders The operating factor K depends on the properties of the driver and the machine. The general rules of mechanical engineering apply here. We know from practice that applications are known where the operating factor K can also assume values of up to 20, e.g. with a direct start-up of asynchronous electric motors in connection with elastic couplings. K 0.8 to to to to 3.15 Selection for Indexing s The selection for indexing freewheels is, among other things, dependent upon how the back and forth motion is generated (crank operation, hydraulic cylinders, pneumatic cylinders etc.). It cannot be specified in a simple equation. When stating the maximum to be transmitted, we are happy to advise you regarding the selection. 9

10 Complete s FRS and FRSG for bolting to the face with sprags Application as Backstop Overrunning Clutch Indexing Locking direction II Drive unit II ing direction backward ing direction forward Drive unit I RINGSPANN has developed a utility model for such applications with reversible operation. Locking direction 10-1 I 10-1 Features Complete s FRS and FRSG are sealed sprag freewheels with ball bearings and ready for installation. The freewheels FRS are supplied oil-filled. The freewheels FRSG are supplied grease filled. s up to Bores up to 7. Standard bores in dimension are available from stock. Metric bores on request. Application example Complete s FRS 600 in both drive units of a transport system with a conveyor belt that moves both forward and backward (reversible operation). In order to ensure that the conveyor belt is moved under tension, forward movement is driven by drive unit I, reverse movement by drive unit II. The freewheels automatically disengage the respective non working drive, eliminating the need for expensive external clutches or brakes. For forward movement, drive unit II is started in freewheeling direction of freewheel II; free - wheel II is in freewheeling operation and disengages drive unit II from the conveyor belt. Afterwords drive unit I is started in the locking direction of the freewheel I; freewheel I is in driving operation and the conveyor belt is moved forward by drive unit I. The speed of drive unit I is lower than that of drive unit II. Thus freewheel II remains in freewheeling operation and drive unit II is not improperly engaged. For reverse movement, the drive units are started in reverse order and direction of rotation at the corresponding speeds. The mentioned application for a reversing conveyor requires speed control for both of the drives. Conveyors operating in the same direction can use clutches in conjunction with the two drives. 10

11 Complete s FRS and FRSG for bolting to the face with sprags F H O O F ø d G L ø T ø D -0, Indexing Overrunning Clutch Backstop FRS FRSG FRS FRSG FRS FRSG FRS FRSG FRS FRSG FRS FRSG FRS FRSG FRS FRSG FRS FRSG FRS FRSG FRS FRSG FRS FRSG See page 9 for determination of selection. M M Nominal M N Standard type For universal use Bore d Standard bores lbs FR FR FR FR FR FR FR ** 42.0 FR ** 83.0 FR FR FR FR Mounting The customer attachment part is centered on the external diameter D and then bolted on to the face. inner ring freewheels/ overruns Max. speed outer ring freewheels/ overruns * Z = Number of tapped holes G on pitch circle T. ** Six holes are equally spaced 60 apart with two additional holes located 30 from the six equally spaced holes and 180 apart. Keyway dimensions upon request by customers. max. M M The recommended tolerance of the shaft is + 0 / and the tolerance of the pilot diameter D of the attachment part is - 0 / D Standard type - grease lubricated For universal use F Nominal M N G Thread L inner ring freewheels/ overruns H Labyrinth Seals Labyrinth seals are available to provide addi - tional protection for harsh environments. O Max. speed T outer ring freewheels/ overruns Z* Weight 11

12 Complete s FRX and FRZ for bolting to the face with sprag lift-off X or lift-off Z Application as Backstop Overrunning Clutch Features Complete s FRX and FRZ are sealed sprag freewheels with ball bearings and sprag lift-off X or sprag lift-off Z. s up to Bores up to Standard bores in dimension are available from stock. Metric bores on request Main motor drive FRX 600 Creep drive Application example Complete FRX 600 as an overrunning clutch in the drive unit of a conveyor belt system with additional creep drive. The free - wheel with shaft coupling is installed between the main motor and the creep drive. When the creep drive operates, the freewheel is in driving operation and drives the belt at low speed. During normal operation (freewheeling operation), the main motor drives and the inner ring overruns and the creep drive is automatically disengaged. With this high speed, sprag lift-off X is used; the sprags work in freewheeling operation without contact and are wear-free

13 Complete s FRX and FRZ for bolting to the face with sprag lift-off X or lift-off Z F H O O F ø d G L ø T ø D -0, Overrunning Clutch Backstop M M Type with sprag lift-off X To extend service life using sprag lift-off for high speed rotating inner ring Nominal M N Sprag lift-off at inner ring speed FRX FRZ FRX FRZ FRX FRZ FRX FRZ FRX FRZ FRX FRZ FRX FRZ FRX FRZ FRX FRZ FRX FRZ See page 9 for determination of selection. Bore d Standard bores lbs FR * 1.125* FR FR FR FR FR *** 42.0 FR *** 83.0 FR FR FR Mounting The customer attachment part is centered on the external diameter D and then bolted on to the face. The recommended tolerance of the shaft is + 0 / and the tolerance of the pilot diameter D of the attachment part is - 0 / inner ring freewheels/ overruns Max. speed outer ring drives * Not available for FRX. Max bore ** Z = Number of tapped holes G on pitch circle T. *** Six holes are equally spaced 60 apart with two additional holes located 30 from the six equally spaced holes and 180 apart. Keyway dimensions upon request by customers. Max. M M max. Labyrinth Seals Labyrinth seals are available to provide addi - tional protection for harsh environments. D Type with sprag lift-off Z To extend service life using sprag lift-off for high speed rotating outer ring Nominal M N F G Thread Sprag lift-off at outer ring speed L H outer ring freewheels/ overruns O Max. speed T inner ring drives Z** Weight 13

14 Complete s FRXF with arm with sprag lift-off X and sealed grease lubricated ball bearings Application as Backstop Features Complete s FRXF are freewheels with sprag lift-off X, labyrinth seals, and sealed grease lubricated ball bearings. All units are supplied complete with arms. FRXF backstops are maintenance free and lubricated for life prior to shipping. s up to Bores up to 4.5. Standard bores are avail - able from stock Application example Complete FRXF as backstop, ar - ranged at the end of a high speed shaft of the gearbox. The back driving is restrained by the clutch arm and the gearbox arm pin. With this high shaft speed under normal operation (freewheeling operation), sprag lift-off X is used; the sprags work in freewheeling operation without contact and are wear-free

15 Complete s FRXF with arm with sprag lift-off X and sealed grease lubricated ball bearings O F O F ø A L ø d L ø d R H M L/2 M L/2 N FRXF 550 FRXF 700 to FRXF Backstop Type with sprag lift-off X To extend service life using sprag lift-off for high speed rotating inner ring Dimensions M M Nominal M N Sprag lift-off at inner ring speed * speed inner ring overruns FRXF FRXF FRXF FRXF See page 9 for determination of selection. * recommended operating speed. Keyway dimensions upon request by customers. Bore d Standard bores max. A # # # # F H L M N O R Torque arm Weight lbs Mounting The back driving is restrained by the clutch arm and the gearbox arm pin. It must have clearance of 1/4 to 1/2 in both radial and axial directions. Lubrication The freewheels FRXF 700 and larger are supplied with labyrinth seals, sealed grease lubrication ball bearings and required no additional lubrication. Complete s FRXF are furnished to size for a slip fit on the shaft. Non lift off clutch varieties are available when operating below sprag lift off speeds. 15

16 Complete FRHD with arm with sprags Application as Backstop for installations with low speeds. The freewheels are designed for the use in inclined conveyorbelts, elevators or pumps. Taconite seals protect the freewheels from contamination with dust or dirt Features Complete s FRHD with arm are sealed sprag freewheels with ball bearings. They are supplied oil-filled and ready for installation. The freewheels are arranged on through shafts or shaft ends. s up to Bores up to 21. Motor Reduction gear Application example Backstop FRHD 900 on the head pulley shaft of an inclined conveyor belt system. The arm is bolted to the freewheel. The back driving is restrained by the arm on the base plate. Head pulley Conveyor Belt Backstop Torque arm support 16-2 Mounting The backdriving is restrained by the arm.the arm must not be clamped into position. It must have 0.5 play in the axial and in the radial direction

17 Complete FRHD with arm with sprags ø D ø d A O L P E C ø D ø d H FRHD 700 to FRHD 950 and FRHD Q 17-1 L A P C E H Q FRHD and FRHD to FRHD Backstop Standard type For universal use Dimensions M M Nominal M N speed inner ring freewheels FRHD FRHD FRHD FRHD FRHD FRHD FRHD FRHD FRHD FRHD FRHD FRHD FRHD FRHD FRHD FRHD FRHD Bore d max. See page 9 for determination of selection. Keyway dimensions upon request by customers. A C D E H L O P Q Weight lbs 17

18 Complete FRHM with arm with sprags Motor Reduction gear 18-1 Application as Backstop for installations with low speeds. The freewheels are designed for the use in inclined conveyorbelts, elevators or pumps. Taconite seals protect the freewheels from contamination with dust or dirt. Features Complete s FRHM with arm are sealed sprag freewheels with ball bearings. They are designed for interchanging the Morse CB units, supplied oil-filled and ready for installation The freewheels FRHM are arranged on through shafts or shaft ends. s up to Bores up to 7. Application example Backstop FRHM on the head pulley shaft of an inclined conveyor. The back driving is restricted by the arm on the base plate. Head pulley Conveyor Belt Backstop Torque arm support 18-2 Mounting The back driving is restrained by the arm. The arm must not be clamped into position. It must have 0.5 play in the axial and in the radial direction. FRHM backstops are supplied for a clearance fit. Set screws on the inner ring are provided for axial retention, shaft collars are not required. Morse is a registered trademark of Borg Warner. 18

19 Complete FRHM with arm with sprags ø A O L ø d ø D H Q J C E ø N R 19-1 Backstop Standard type For universal use Dimensions M M Nominal M N speed inner ring freewheels FRHM FRHM FRHM FRHM FRHM FRHM FRHM FRHM See page 9 for determination of selection. Keyway dimensions upon request by customers. * Shaft length L and stirrup position J or pin position R should be considered. These dimensions may vary from the Morse Series CB. Bore d max. A C D E H J* L* N O Q R* Weight lbs Morse is a registered trademark of Borg Warner. 19

20 Complete s FA with arm with sprags and grease lubrication Application as Backstop Indexing For application as backstop in installations with low speeds in freewheeling operation. For application as indexing freewheel in installations with low to medium total number of actuations. Features Complete s FA with arm are sprag freewheels with sleeve bearings. They are grease-lubricated and require no maintenance. s up to Bores up to Application example Two Complete s FA 57 in the roller feed of a sheet metal processing machine. The indexing freewheel arranged on the left is driven via a bell crank with an adjustable lift. This enables an infinite setting of the feed. The backstop arranged on the right prevents the indexing rollers from running backwards while the indexing freewheel carries out its back stroke. Often, an additional small brake is provided in order to prevent the accelerated sheet metal strip from advancing

21 Complete s FA with arm with sprags and grease lubrication L H ø d H7 ø D N N C 21-1 E 21-2 Indexing Backstop Type M M Standard type For universal use Nominal M N Max. speed inner ring freewheels FA 37 SF FA 57 SF FA 82 SF FA 107 SF See page 9 for determination of selection. Keyway dimensions upon request by customers. Bore d max. C D E Dimensions H L N Weight lbs Mounting When used as a backstop, the backdriving is supported by the arm. The arm must not be clamped into position. It must have to play in the axial and radial directions. When used as an indexing freewheel, the arm serves as the indexing lever arm. The arm is not heat treated enabling the customer alter the arm to suit his application. The recommended tolerance of the shaft is + 0 /

22 Complete s RFB with arm and clamping collar or mounting flange with sprags and grease lubricated ball bearings Application as Backstop FeaturesFeatures Complete s RFB are sprag freewheels with sealed grease lubricated ball bearings that require no maintenance. They are supplied with a clamping collar or a flange for direct mounting to standard bushings. s up to 900. Bores up to 6 with clamping collar Application example Complete RFB as a backstop on a radial fan. The backstop prevents reverse rotation of the fan shaft from air flow or from incorrectly polarized drive motor

23 Complete s RFB with arm and clamping collar or mounting flange with sprags and grease lubricated ball bearings Tightening screws 2 x 1/2-20 Tightening 125 M O F M O F ø A ø d ø A ø C RFB 350 and 450 Type C with clamping collar RFB 450 Type QD and Taper Lock with mounting flange Q 23-1 Backstop Standard type For universal use Dimensions RFB 350 C RFB 450 C RFB 450 QD RFB 450 Type Taper Lock M M Nominal M N speed inner ring freewheels See page 9 for determination of selection. * A 3/4 diameter arm extension is available upon request. Mounting Backstops RFB are mounted with either a clamping collar to shaft end or a mounting flange that can be connected directly to a QD or Taper Lock bushing. Additional shaft accessories may be required for RFB-TL designs, contact RINGSPANN. min. Bore d A C* F M max Shaft end mounted Shaft end mounted E F J O Q Connection/Bushing Type 23

24 Complete s FR CA with gear coupling with sprags Application as Overrunning Clutch Features Complete FR CA incorporate a freewheel FR and a gear coupling. Free - wheels are supplied oil or grease lubricated. s up to Bores up to 7. Complete s FR CA allow for removal of the assembly without moving the connected equipment. The clutch should always be mounted on the low temperature shaft of the application Auxiliary drive 2 FRZ 500 CA 1.5 Main drive Right angle gear box 1 FRSG 600 CA Application Example Two Complete s FR CA with gear coupling as overrunning clutches in the drive unit of a tube mill with additional auxiliary drive. A freewheel FRSG 600 CA 2.0 ( 1) is arranged between the main drive and the right angle gear box. A freewheel FRZ 500 CA 1.5 ( 2) with sprag lift-off Z (page 26) is positioned between the auxiliary drive and the right angle gear box. If the auxiliary drive is operating, 2 works in the driving operation and the 1 overruns at a low speed (freewheel operation). When driving via the main drive, the unit is driven thru 1 (driving operation) 2 overruns and automatically disengages the auxiliary drive (freewheeling operation). With the high speed, the type with sprag lift-off Z is used. There is no contact of the sprags during freewheeling and therefore no wear. Additional Clutch Couplings Clutch Coupling Packages CC Clutch Coupling Packages DC Clutch Coupling Packages UJ

25 Complete s FRS CA and FRSG CA with gear coupling with sprags E L1 DBSE L2 Bore ø d1 Coupling Bore ø d2 ø A FR CA 25-1 Indexing Overrunning Clutch Backstop Coupling M M Nominal M N Standard type For universal use inner ring freewheels/ overruns Max. speed outer ring freewheels/ overruns Standard type - grease lubricated For universal use FRS 300 CA F FRSG 300 CA FRS 400 CA F FRSG 400 CA FRS 500 CA F FRSG 500 CA FRS 550 CA F FRSG 550 CA FRS 600 CA F FRSG 600 CA FRS 650 CA F FRSG 650 CA FRS 700 CA F FRSG 700 CA FRS 750 CA F FRSG 750 CA FRS 775 CA F FRSG 775 CA FRS 800 CA F FRSG 800 CA FRS 900 CA F FRSG 900 CA FRS 1000 CA F FRSG 1000 CA See page 9 for determination of selection. M M Nominal M N inner ring freewheels/ overruns Max. speed outer ring freewheels/ overruns d1 Bore max. Coupling d2 FR 300 CA FR 400 CA FR 500 CA FR 550 CA FR 600 CA FR 650 CA FR 700 CA FR 750 CA FR 775 CA FR 800 CA FR 900 CA FR 1000 CA * Note Weights are based on Solid Coupling hubs. Weights will vary with required bores. Keyway dimensions upon request by customers. Mounting The gear coupling and stub adapter with fasteners are supplied loose. Depending on the desired freewheeling direction, the gear coupling can me mounted on either the drive or driven shaft. A DBSE Labyrinth Seals Labyrinth seals are available to provide addi - tional protection for harsh environments. E L1 L2 Weight* lbs 25

26 Complete s FRX CA and FRZ CA with gear coupling with sprag lift-off E L1 DBSE L2 Bore ø d1 Coupling Bore ø d2 ø A FR CA 26-1 Overrunning Clutch Backstop Coupling M M Type with sprag lift-off X To extend service life using sprag lift-off for high speed rotating inner ring Nominal M N Sprag lift-off at inner ring speed inner ring freewheels/ overruns Max. speed outer ring drives FRX 400 CA F FRZ 400 CA FRX 500 CA F FRZ 500 CA FRX 550 CA F FRZ 550 CA FRX 600 CA F FRZ 600 CA FRX 650 CA F FRZ 650 CA FRX 700 CA F FRZ 700 CA FRX 750 CA F FRZ 750 CA FRX 775 CA F FRZ 775 CA FRX 800 CA F FRZ 800 CA FRX 900 CA F FRZ 900 CA See page 9 for determination of selection. Max. M M Type with sprag lift-off Z To extend service life using sprag lift-off for high speed rotating outer ring Nominal M N Sprag lift-off at outer ring speed outer ring freewheels/ overruns Max. speed inner ring drives d1 Bore max. Coupling d2 A DBSE FR 400 CA FR 500 CA FR 550 CA FR 600 CA FR 650 CA FR 700 CA FR 750 CA FR 775 CA FR 800 CA FR 900 CA * Note Weights are based on Solid Coupling hubs. Weights will vary with required bores. Keyway dimensions upon request by customers. E L1 L2 Weight* lbs 26

27 Accessories for Complete s FR Torque Arms TA and End Covers Torque Arms TA Torque Arms TA are offered as an accessory for s FRS, FRSG and FRX when used as a backstop. The arms are supplied pre-drilled and ready for installation. H Q ø N J Installation The arm must not be rigidly anchored but must be restrained by either a non-threaded pin or an angle iron bracket. When a pin is used the diameter of the pin must be 1/32 of an smaller than the pin hole diameter N of the arm. E Torque arms TA for Complete s FR C 27-1 Torque Arm C E H J N Q Weight lbs TA TA TA TA TA TA TA TA TA TA TA TA End Covers End covers are available to protect operating personnel from coming in contact with the rotating shaft for all Complete s FR. Contact fatory for availability

28 Internal s ZZ with ball bearing properties 28-1 Application as Backstop Overrunning Clutch Indexing Features Internal s ZZ are sprag freewheels with bearing support and ball bearing properties. The freewheels are supplied grease-filled for normal operating conditions. The freewheel is assembled into the customer housing, allowing a compact, space-saving solution. s up to 480 /650 Nm. The is transmitted on the inner ring and/or on the outer ring by press fit or keyway connection. Bores up to /40 mm. The following series are available: Series Torque transmission on outer ring inner ring by by 2RSseals Page keyway press fit keyway press fit ZZ 29 ZZ 2RS 30 ZZ P2RS 30 ZZ P 31 ZZ PP 31 The Internal s ZZ of the sizes ZZ 6201 to ZZ 6207 have the same dimensions as the respective ball bearings of series 62. The series ZZ 2RS and ZZ P2RS have 2RS seals Application example Two Internal s ZZ 6206 as indexing freewheels in the drive of the metering roller of a seed spreader. The freewheels are built in an infinitely variable oil bath gearbox. Two cam disks that are off set by 180 are arranged on the gearbox shaft. By means of arms, these drive the outer rings of the two adjacent Internal s, which then gradually turn the metering shaft. The infinite speed settings of the gearbox s drive shaft are executed by means of the respective pivoting of the roller support plate, so that the arms can execute lifts of differing amounts

29 Internal s ZZ for press fit on the outer ring with sprags, bearing supported B øk ød ød 29-1 Indexing Overrunning Clutch Backstop M M Nominal M N Standard type For universal use speed Load rating of bearing support dynamic C Nm Nm lbf N lbf N ZZ , ZZ ZZ ZZ ZZ ZZ ZZ ZZ ZZ See page 9 for determination of selection. static C 0 Bore d Dimensions B D K Weight mm mm mm mm lbs kg Mounting The is transmitted on the inner ring and outer ring by press fit. In order to transmit the s specified in the table, the outer ring must be installed in a housing with an external diameter K. The housing should be made of steel or grey cast iron in minimum quality GG- 20. When using other housing materials or smaller external diameters, we urge you to contact us regarding the transmissible. The tolerance of the housing bore D must be ISO N6 and the tolerance of the shaft must be ISO n6. The permissible operating temperature of the freewheel is - 40 F to +175 F. Lubrication The freewheels are supplied grease-filled for normal operating conditions. However, the freewheels can also be connected to the customer s oil lubrication system; this is particularly recommended in the case of higher speeds. 29

30 Internal s ZZ 2RS and ZZ P2RS for press fit on the outer ring with sprags, bearing supported and sealed B B ø K ø D ø d ø K ø D ø d ZZ 2RS 30-1 ZZ P2RS 30-2 Series Indexing Overrunning Clutch Backstop Series M M Nominal M N Standard type For universal use speed Load rating of bearing support dynamic C ZZ 2RS ZZ P2RS Nm Nm lbf N lbf N ZZ 8 2RS* ZZ 12 2RS ZZ 12 P2RS ZZ 15 2RS ZZ 15 P2RS ZZ 17 2RS ZZ 17 P2RS ZZ 20 2RS ZZ 20 P2RS ZZ 25 2RS ZZ 25 P2RS ZZ 30 2RS ZZ 30 P2RS ZZ 35 2RS ZZ 35 P2RS ZZ 40 2RS ZZ 40 P2RS See page 9 for determination of selection. Keyway according to DIN 6885, page 3 Tolerance of keyway width JS10. * Only one RS seal on the ball bearing side. Locking from this side the freewheeling direction of the inner ring is clockwise free. static C 0 Bore d Dimensions B D K Weight mm mm mm mm lbs kg Mounting Series ZZ 2RS: The is transmitted on the inner ring and outer ring by press fit. Series ZZ P2RS: The is transmitted on the inner ring by keyway connection and on the outer ring by press fit. In order to transmit the s specified in the table, the outer ring must be installed in a housing with an external diameter K. The housing should be made of steel or grey cast iron in minimum quality GG-20. When using other housing materials or smaller external diameters, we urge you to contact the factory regarding the transmissible. The tolerance of the housing bore D must be ISO N6 and the tolerance of the shaft must be ISO n6. The permissible operating temperature of the freewheel is + 40 F to +140 F. Please contact the factory if the temperature is different than the given values. Lubrication The freewheels are supplied grease-filled and with two RS seals. 30

31 Internal s ZZ P and ZZ PP for press fit or keyway connection on the outer ring with sprags, bearing supported B ø K ø D ø d PN JS ZZ P ZZ PP 31-2 Series Indexing Overrunning Clutch Backstop Series M M Nominal M N Standard type For universal use speed Load rating of bearing support dynamic C ZZ P ZZ PP Nm Nm lbf N lbf N ZZ 6201 P ZZ 6202 P ZZ 6202 PP ZZ 6203 P ZZ 6203 PP ZZ 6204 P ZZ 6204 PP ZZ 6205 P ZZ 6205 PP ZZ 6206 P ZZ 6206 PP ZZ 6207 P ZZ 6207 PP ZZ 40 P ZZ 40 PP See page 9 for determination of selection. Keyway according to DIN 6885, page 1 Tolerance of keyway width JS10. * Keyway according to DIN 6885, page 3 Tolerance of keyway width JS10. static C 0 Bore d Dimensions B D K Weight mm mm mm mm lbs kg * * * * * * * Mounting Series ZZ P: The is transmitted on the inner ring by keyway connection and on the outer ring by press fit. Series ZZ PP: The is transmitted on the inner and on the outer ring by keyway connection. In order to transmit the s specified in the table, the outer ring must be installed in a housing with an external diameter K. The housing should be made of steel or grey cast iron in minimum quality GG-20. When using other housing materials or smaller external diameters, we urge you to contact the factory regarding the transmissible. The tolerance of the housing bore D must be ISO N6 and the tolerance of the shaft must be ISO k6. The permissible operating temperature of the freewheel is + 40 F to +140 F. Please contact the factory if the temperature is different than the given values. Lubrication The freewheels are supplied grease-filled. 31

32 Internal s RC for keyway connection on the outer ring with sprags Application as Backstop Overrunning Clutch Features Internal s RC are sprag freewheels without inner ring or bearing support. The customer's hardened and ground shaft is used as the inner ring. s up to The freewheel is incorporated into the customer s housing, allowing for a compact, space saving solution B 0,002 A P N N Mounting Internal s RC require bearing support and a shaft hardened to HRC with a case depth after grinding to a 16 micro finish. Concentric alignment of the shaft and housing bore is required. ø J A ø D -0,0015 Lubrication Internal s RC require either grease or oil lubrication. Lubrications containing molybdenum disulphide must not be used Backstop Standard type For universal use Dimensions M M Nominal M N RC RC RC RC RC See page 9 for determination of selection. Housing Bore Diameter D Diameter D B Shaft Diameter J lbs / / 16 x 3 / / / 4 x 1 / / / 4 x 1 / / / 8 x 3 / / / 8 x 3 / Keyway N x P Use with bearing Weight 32

33 Internal s RCD specifically designed as an interchange backstop for Dodge TXT shaft mounted reducers with sprags Application as Backstop Features Internal s RCD are sprag freewheels without bearing support. They are specifically designed as interchange backstops for Dodge shaft mounted reducers. The freewheel is incorporated into the customer s housing, allowing for a compact, space saving solution. RCD-6 RCD Interchange Chart TXT Series Obsolete TXT Series TDT Series TD Series Backstop Part Number RCD-3 309A 315A 325A RCD-4 409A 415A 425A Mounting Internal s RCD are used to interchange backstops installed by the gearbox manufacturer. Installation instructions and recommendations by the gearbox manufacturer should be followed for the safe operation and longevity of the backstop. Lubrication Oil lubrication as specified by the gearbox manufacturer should be used. Lubrications containing molybdenum disulphide must not be used. RCD B 515A 525A 515B 525B RCD T No. 16A A 625A RCD T No. 17A A 725A RCD-8/ No. 8 No. 9 No A 825A RCD-10/ T RCD Dodge is a registered trademark of Baldor Electric Company. 33