INTERCHANGEABLE BUSHINGS

Transcription

1 INTERCHNGEE Index SECTION PROUCT PGE INEX USHING TYPES Q Installation/Removal Steel ushing Standard ushing eld-on Hubs TPER USHING Installation/Removal eld-on Hubs Reborable ushings MST USHING ushing Specifications Installation & Removal eld-on Hubs IER ; Q, MST

2 Interchangeable ushings Martin S USHING INE INCUES THE MOST POPUR USE IN INUSTRY. E OFFER Q (QUICK ISCONNECT), T (TPER USHE) N MST TM (MRTIN SPIT TPER). Martin S USHING RE VIE IN VRIETY OF SIZES, STYES N MTERIS. Martin E-ON HUS RE ME OF STEE N FIT Martin. Q USHING (Inch & metric bore) TPER USHING (Inch & Metric ore) MST Martin SPIT TPER USHING (Inch & Metric ore) E-ON HU TYPE Q E-ON HU TPER USHE TYPES S & E-ON HU MST Martin SPIT TPER -2

3 Stock Q ushings Martin MOUNTING PROCEURE Q IMPORTNT E SURE TPERE CONE SURFCES OF Q USHING N INSIE OF SHEVE OR SPROCKET HU RE RY N FREE OF FOREIGN SUSTNCES SUCH S PINT, GRESE, OR IRT. STNR Mounting ssembly FOR Q SHEVES N SPROCKETS MOUNTING. e sure the tapered cone surfaces of the bushing and the inside of the driven product are clean and free of anti-seize lubricants. 2. Slide Q bushing on shaft, flange end first. ssemble key.. Position Q bushing on shaft. Tighten set screw over key "hand tight" with standard llen wrench only. o not use excessive force. 4. Slide large end of sheave or sprocket taper bore into position over cone aligning drilled bolt holes in sheave or sprocket with tapped holes in flange of bushing. ssemble pull-up bolts and lock washers. NOTE: Install M thru S bushings in the hub so that the two extra holes in the hub are located as far as possible from the bushing's saw cut.. Tighten pull-up bolts alternately and evenly to tightness indicated in torque table on back. o not use extensions on wrench handles. There should be a gap between the face of the sheave or sprocket hub and the flange of the Q bushing to insure a satisfactory cone grip and press fit. CUTION: THIS GP MUST NOT E COSE. ISMOUNTING. Remove pull-up bolts and screw them into TPPE holes in sheave or sprocket and against flange of Q bushing to break cone grip. 2. oosen set screw and slide Q bushing from shaft. RNING: ecause of the possible danger to person(s) or property from accidents which may result from the improper use of products, it is important that correct procedures be followed: Products must be used in accordance with the engineering information specified in the catalog. Proper installation, maintenance and operation procedures must be observed. The instructions given above must be followed. Inspections should be made as necessary to assure safe operation under prevailing conditions. ll rotating power transmission products when used in a drive are potentially dangerous and must be guarded by the user as required by applicable laws, regulations, standards, and good safety practice. (Refer to NSI Standard..) REVERSE Mounting ssembly FOR Q SHEVES N SPROCKETS USING J, SH, S, SS, SK, SF, E, F, & J These bushings, as well as the sprockets and sheaves for them, are each drilled with six holes (three drilled and three tapped) to allow pull-up bolts to be inserted from either side. This enables variations of mounting characteristics to suit a particular installation. TPERE CONE GRIP TPERE CONE GRIP C C KEY SET SCRE PU UP OT KEY SET SCRE PU UP OT. e sure the tapered cone surfaces of the bushing and the inside of the driven product are clean and free of antiseize lubricants. 2. ssemble sheave or sprocket with bolts inserted (ut not tightened) through RIE holes in bushing flange into TPPE holes in sheave, sprocket, or other Martin Q part.. ith key in shaft keyseat, slide assembly into approximate position on shaft with flange end of bushing away from bearing. 4. Position Q bushing on shaft by tightening set screw over key "hand tight" with standard llen wrench only. o not use excessive force.. Tighten pull-up bolts alternately and evenly to tightness indicated in torque table below. o not use extensions on wrench handles. There should be a gap between the face of the sheave or sprocket hub and the flange of the Q bushing to insure a satisfactory cone grip and press fit. CUTION: THIS GP MUST NOT E COSE. C C. Remove pull-up bolts and screw them into TPPE holes in bushing flange and against hub of sheave or sprocket to break cone grip. 2. oosen set screw in bushing flange and slide Q bushing from shaft. -

4 ll Steel Q ushings F = ength of Mating ore G = Gap etween Q ushing and Mating Hub ushings J to J Inclusive ushings M to S Inclusive Q ushings Steel imensions (Inches) Stock ore Range Cap Maximum verage ushing E F G olt Screws Standard Shallow eight Circle Required Minimum Keyway Keyway (pprox.) SF-ST x E-ST x F-ST x 6 4. J-ST x M-ST x N-ST x ushing ores Keyway x 6 SF-ST x x x Shallow Key imension Standard Key Seat Key Keyway Key 4 x 4 x 6 x 4 x 4 x 6 x 4 x x 6 x 6-2 ST. E-ST x x 6 x 4 x x 6 - x 6 x x 6 4 x 4 4 x - 6 ST. x x 9 x x F-ST - 4 x 6 x 6 x 6 x 4 x - 6 x x x 4 x 4 x 4 4 NONE x 6 x 4 x 4 4 x J-ST 6-4 ST. 4 x 6 4 x 6 2 x 4 2 x 6-4 x ST. M-ST x ST. N-ST 6-4 x x 4 Shallow Key imension Steel Key Seat Key Keyway Key 4 x x x Standard Keyway and Key imension ores Keyway Key x 4 x 6 x 6 4 x x 6 x x 6 x x 4 x x 6 x x 4 x x 6 x 6-4 x x x 4 x x 4 x x 4 4 x x 4 2 x x 6 - x 4 x 4 x 4 x 6 4 x 6 4 x 6 4 x 6 4 x 4 x x x x 6 x ushing Plain ores Not Split SH-ST S-ST SK-ST SF-ST 6 E-ST - 6 F-ST J-ST M-ST N-ST x 6 x x x 6 x x 6 x 6 x 4 x 6 x x 6 x x x 4 x 4 4 x x 6 x 4 x x 4 x 4 x 4 x 4 x 4 x x 2 x 4 2 x Reborable Q bushings made of Stainless Steel are available in many sizes. Non stock sizes are available on MTO basis. -4

5 Standard Q ushings imensions (Inches) Stock ore Range Cap Maximum verage ushing E F G olt Screws Standard Shallow Set Screw eight Circle Required Minimum Keyway Keyway Size (pprox.) J x SH x 6 4 SS x S x SK x SF x E x F x 6 6. J x M x N x P x x S x Inch ore ushing ores Keyway - 6 NO K.. - ST. J SH NO K.. - ST 6 - x NO K ST. 4 x SS 6 x - 6 x 6 2 NO K ST. S SK SF x x x 6 x 6 2 NO K ST x x NO K ST E x 6 x 6 4 x 6 4 x - 2 ST. 6 4 x x 6 x - 6 ST. - 4 x 6 F - 6 x 4 NONE J 4-4 ST. 6-4 x M ST x ST. N - 4 x x ST. P 6-6 x x 4 - ST x 4 Important The metric system does not refer to keyseat or keyway dimensions as does the English system; instead dimensions are given for the key itself which is rectangular in shape, not square as in the English system. NOTE:.09 =mm Ex 24 mm = TO ORER: SH 24 mm Millimeter ore ore Key ushing MM XT 24, 2 8x SH 28, 0 2, 0x8 24, 2 28, 0 8x SS 2, 0x8 8 40, 42 2x8 24, 2 8x 28, 0 S 2, 0x8 8 40, 42 2x8 24, 2 8x 28, 0 2, 0x8 SK 8 40, 42 2x8 48, 0 4x9 6x0 28, 0 8x 2, 0x8 8 SF 40, 42 2x8 48, 0 4x9 6x0 60 8x, 8 0x8 40, 42 2x8 E 48, 0 4x9 6x0 60, 6 8x 0, 20x2 48, 0 4x9 6x0 F 60, 6 8x 0, 20x2 80, 8 22x4 90 2x4 0 4x9 6x0 60, 6 8x J 0, 20x2 80, 8 22x4 90, 9 2x x6 Keystock provided for nonstandard keyways. -

6 Q eld-on Hubs C TYPE TYPE 2 Martin Q weld-on hubs are suitable for use in many applications, such as welding to plate steel sprockets. eld-on hubs are made of steel, drilled tapped and taper bored for Q bushings P C E-ON HU TYPE Q Q eld-on Hubs Catalog imensions Inches Type eight Number P C rilling Pounds Mounting J SH SS SK SF E F J M N P S Tolerance of imension J- Thru J- = ( ) M- Thru S- = ( ) ST or Reverse Mount ST Mount Only -6

7 Taper ushings IMPORTNT NOTE: Please follow the instructions on this sheet in order for the Martin bushing to perform satisfactorily. 008 to 00 to to INSTTION Clean all oil, dirt, and paint from shaft, bushing bore, outside of bushing and component (sprocket, sheave...etc.) bore. 2 Insert bushing into component. Match the hole pattern, not the threaded holes (each hole will be threaded on one side only.). Thread set or cap screws into those half threaded holes indicated by on above diagram. Mount assembly on shaft. 4. lternately torque set or cap screws* to recommended torque setting in chart below.. On and larger bushings use a block, sleeve or drift and hammer large end of bushing (do not hammer bushing directly). 6. Repeat steps 4 and until torque wrench reading, after hammering, is the same as before hammering.. Fill all unoccupied holes with grease. REMOV. Remove all set or cap screws. 2. Insert set or cap screws in holes indicated by on drawing. oosen bushing by alternately tightening set or cap screws.. To reinstall, complete all seven () installation instructions. ushing No. RECOMMENE TORQUE TE Set or Cap Screw 008, 08 /4-20 Socket Set Screw 20, 2, 0 /8-6 Socket Set Screw 60, 6 /8-6 Socket Set Screw 202 /6-4 Socket Set Screw 280 2, 22 /2 - Socket Set Screw , 00 /8 - Socket Set Screw 800 /2 - Socket Head Cap Screw, /8 - Socket Head Cap Screw,00 44 /4-0 Socket Head Cap Screw 2,40 00 /8-9 Socket Head Cap Screw,00 600, 060, 806 -/4 - Socket Head Cap Screw, , /2-6 Socket Head Cap Screw,00 * If two bushings are used on same component and shaft, fully tighten one bushing before working on the other. rench Torque in. / lbs. CUTION RNING: USE OF NTI- SEIZE URICNT ON TPERE CONE SURFCES OR ON OT THRES HEN MOUNTING MY RESUT IN MGE TO SHEVES N SPROCKETS. THIS VOIS MNUFCTURER'S RRNTIES. RNING: ecause of the possible danger to person(s) or property from accidents which may result from the improper use of products, it is important that correct procedures be followed: Products must be used in accordance with the engineering information specified in the catalog. Proper installation, maintenance and operation procedures must be observed. The instructions given above must be followed. Inspections should be made as necessary to assure safe operation under prevailing conditions. ll rotating power transmission products when used in a drive are potentially dangerous and must be guarded by the user as required by applicable laws, regulations, standards, and good safety practice. (Refer to NSI Standard..) -

8 Taper ushings imensions No. 008 to 00 Taper ushings ushing ushing Shaft Number ore t. Keyseat Keyseat to x to.2 6 x x 6 6 x 6 to.6 4 x 6 4 x to 9 6. x 6 08 to.2 6 x 6 to.22 4 x x 6 6 x 4 x 6 to. 4 x 6 4 x to x 6 20 to. 6 x 6 to x to x 6 2 to. 6 x 6 to x to 9 6. x 6 0 to. 6 x 6 to x 6 to.6 6 x to x 6 to.8 6 x 6 6 x 4 x x 6 6 x 4 x x 6 6 x 4 x 6 x x to 4. 4 x 4 x 6 to. 6 x 6 x 6 to.6 x 6 x to. x x 6 to x 6 x 6 to. 6 x 6 x 6 6 to x 4 x 6 to.8 6 x 6 x 6 to. x 6 x to.6 x x 6 to 9 6. x 6 to.6 6 x x 6 6 x 6 to 4. 4 x 4 x to.4 6 x 6 x 6 to 4.2 x 6 x 6 6 to.0 x 4 x 4 6 to 2.0 x 6 x 4 to 9 6. x 6 x 6 to.4 6 x 6 x 6 to 4. 4 x 4 x 2 6 to.2 6 x 6 x 6 to 4.0 x 6 x 6 6 to x 4 x to 2.9 x 6 x 6 4 to x 6 x 6 to x 4 x 22 6 to 4. 6 x 6 x 6 to x 6 x 6 6 to 2 4. x 4 x to 2 2. x 6 x 6 6 to x 4 x 6 to 6. 6 x 6 x to x 6 x 6 6 to 2 4. x 4 x to x 6 x to.9 4 x 4 4 x 4 x 6 to x 6 to x 6 x 00 6 to x 6 x 6 6 to x 4 x to x 6 x to.0 4 x 4 4 x imensions CØ Class Class M ushing 20 0 Standard Standard Number Gray Gray Steel F Hex. Short Hex. Short Iron Iron Key Key Key Key x x x x x x x x x x x x ushings cannot be bored larger than largest bore listed. For detail dimensions required for machining hubs, consult factory. Ø K ey furnished for these sizes only. For general reference. Severe conditions may require larger hub. Heavy well-located web may permit smaller hub. Hub diameter required depends on the particular application. Consult Martin giving full information on the proposed design. Hub diameters shown are based on 20,000, 0,000, and 0,000 P.S.I. minumum ultimate tensile strength respectively for Class 20 gray iron, Class 0 gray iron, and steel hubs. 2 screws required. Use in positions shown for tightening bushing on shaft. In removing bushing from shaft, remove screws and use one of them in the other hole. ushing price includes screws. Space required to tighten bushing. lso space required to loosen screws to permit removal of hub by puller. Space required to loosen bushing using one screw as jackscrew no puller required. Standard hex key cut to minimum usable length. -8

9 Taper ushings imensions No. to 00 ushings CØ Class Class ushing ore eight ushing Shaft 20 0 Steel F G R Number Keyseat Keyseat Gray Iron Gray Iron 6 to x 6 to 4 6 x 6 to 4 x 6 6 to x to 2 4 x to x 6 to 8 x 4 4 x 6 x x 6 x x 9 x 6 4 x x to 4 22 x 6 x 6 6 to x 4 x to x 6 x to 4 4 x 4 x x to x 6 x 6 6 to 4 4 x 4 x 6 6 to 4 x 4 x 44 6 to x 4 x to x 6 x to x 4 x x to 4 2 x 6 x 6 6 to x x 4 6 to 4 8 x 4 x to x 6 x to 4 4 x 4 x 6 to 4 2 x 6 x x to 4 2 x x to 24 4 x 6 4 x ushings cannot be bored larger than largest bore listed. For detail dimensions required for machining hubs, consult factory. screws required. Use in positions shown for tightening bushing on shaft. In removing bushing from shaft, remove screws and use two of them in the other two holes. ushing price includes screws. See following footnote. K ey furnished for these sizes only. Ø For general reference. Severe conditions may require larger hub. Heavy welllocated web may permit smaller hub. Hub diameter required depends on the particular application. Consult factory giving full information on the proposed design. Hub diameters shown are based on 20,000, 0,000, and 0,000 P.S.I. minumum ultimate tensile strength respectively for Class 20 gray iron, Class 0 gray iron, and steel hubs. Provide sufficient space to tighten and loosen bushing. idth across flats of screw head is same as screw diameter which is shown in column F. -9

10 Taper ushings imensions NO No 600 to 2000 Taper ushings TO 008 CØ Class Class ush ore eight ushing Shaft 20 0 Steel E F M Number Keyseat Keyseat Gray Iron Gray Iron to 4 60 x x to 4 x 4 x x to 6 0 x 4 x to 8 4 x 4 x 9 6 to 6 x 4 x x to 6 4 x 4 4 x 4 Φ806 6 to 20 4 x 4 x 9 6 to 6 0 x 4 x x to 90 4 x 4 4 x to 8 2 x 4 2 x 4 Φ to x 4 4 x to x 4 2 x x to x 2 x Φ to x 4 2 x to 60 2 x 2 x x to x x ushings cannot be bored larger than largest bore listed. For detail dimensions required for machining hubs, consult Martin. Ø For general reference. Severe conditions may require larger hub. Heavy welllocated web may permit smaller hub. Hub diameter required depends on the particular application. Consult Martin giving full information on the proposed design. Hub diameters shown are based on 20,000, 0,000, and 0,000 P.S.I. minumum ultimate tensile strength respectively for Class 20 gray iron, Class 0 gray iron, and steel hubs. screws and use all except one in the other holes. ushing price includes screws. Space required to tighten bushing. lso space required to loosen screws to ` permit removal of hub by puller. Space required to loosen bushing using screws as jackscrews no puller required. Φ Not currently stocked vailable on order. screws for 600; four for 060 to 008; six for Use in positions shown for tightening bushing on shaft. In loosening bushing, remove -0

11 Martin Taper ushed Type S eld-on Hubs are suitable for use in many applications such as for welding to plate steel sprockets. The outside diameters of these hubs have been reduced to a minimum. This is permissible because of the reinforcing strength of the items to which they are to be welded. Cases where the attached item is of small dimensions should be referred to Martin. Taper ushed Type S-Type eld-on Hubs imensions Type S Type S eld-on Hubs are made of steel, drilled, tapped, and taper bored for Tapered ushings. Their small size and the convenience and advantages of Taper ushed construction make them of great value on many devices for use on shafts. Taper ushed Type S eld-on Hubs For Use with Max. Hub ushing ore of eight Φ C G J Number Number ushing S S S S S S S S S S S Ø See dimension tables on preceeding page for bushing data and wrench space required Φ Ø Type eld-on Hubs are made of steel, drilled, tapped, and taper bored to receive Tapered ushings. They are very useful for welding into fan rotors, pulleys, plate sprockets, impellers, agitators, and many other devices which must be firmly fastened to the shaft. Type Taper ushed Type eld-on Hubs For Use with Max. Hub ushing ore of eight C F G H J K Number Number ushing See dimension tables on preceeding page for bushing data and wrench space required To 0 60 To 00 -

12 Taper ushings Metric and Reborable Stock Taper ushings ith Metric ores and Keyways Metric Metric ores Keyway 4, 6 x 2. Millimeter ores and Keyways from ISO Std. R. = 2.4 millimeters Taper ushing Number , 9 6 x , x x , 0 8 x x x x , 42 2 x , 48 4 x x x NOTE: For other metric bore sizes consult factory. Stock Reborable Taper ushings ith No Keyways Sintered Steel Gray Iron Steel Stainless Steel Not currently stocked. Consult factory for availability and pricing. -2

13 G.C. G.C. MST ushings TYPE TYPE 2 "H" USHING G.C. G S.S. IN "R" USHING ONY.C. TYPE "P", "Q", & "R" TYPE 2 G.C. G.C. TYPE "S" : SOI FNGE "U" : SPIT THRU FNGE "S" & "U" TYPE 2 TYPE 2 ONY : SOI FNGE "U", "U2" : SPIT THRU FNGE G.C. G.C. ushing Specifications TYPE "" imensions Stock ore Range Cap Screws rench Part arge v. t. Torque No. End G.C. Type Type 2 No. Size bs. In. / lbs. H /8 - -/8 -/6 - -/2 2 /4X/ P /2 - -/6 -/2 - -/4 /6X. 92 P /4 - -/6 -/2 - -/4 /6X. 92 P /8 - -/8 -/8 /6X 2 92 Q /4-2-/6 2-/8-2-/6 /8X-/4. 48 Q /6 2-/8-2-/8 /8X-/ Q /8-2-/6 2-/8-2-/2 /8X-/4. 48 R /8-2-/6 2-/8 - -/4 /8X-/4. 48 R /8-2-/6 2-/8 - -/8 /8X-/4 48 S /6 - -/6 -/4-4-/4 /2X2-/ S /8 - -/6 -/4-4-/6 /2X2-/ UO /8 - -/6 /8X2-/ UO /4-4-/4 4-/8 - -/2 /8X2-/ U /8-4-/4 4-/8 - -/2 /8X2-/ U /6-4-/4 4-/8 - /8X2-/ /8-6-/6 6-/4 - -/6 4 /4X /8-6-/6 6-/4 - -/6 4 /4X 000 ll tapers are /4 per 2 on ia. ll dimensions are in inches except, as noted. ll bushings are cast iron, ductile iron, sintered steel, or steel. Consult manufacturer for clarification. Metric bushings also available. TYPE 2 -

14 MST ushings -4

15 MST Hubs.C. P TPERS /4" PER FT. ON IMETER "H" HUS a.c. P K "P", "Q", "R", "S", & "U" HUS a.c. P K "" HUS Steel Hub Specifications For imensions Tapped Holes t. Part No. ushing P K.C. a o No. Size bs. HH H / HCH H / HP P /6-8.4 HCP P /6-8. HP2 P / HQ Q / HCQ Q / HQ2 Q / HR R /8-6. HR2 R /8-6.4 HS S /2 -. HS2 S /2-0.4 HU0 UO /8-2.0 HU U / HU2 U / H / ll tapers are /4 per 2 on ia. ll dimensions are in inches, except as noted. -

16 Q & MST Idler ushings Martin Idler ushings are designed to accomodate stock V-belt drives, sprockets, timing belt pulleys, or other products that use Q or MST type bushings. They are equipped with two electric motor grade, permanently lubricated ball bearings, mounted on a precision shoulder bolt. Shoulder bolt and two hex jam nuts are zinc plated. Installation is made by slipping the threaded shaft through a hole bored in support structure, and tightening the locking nut. Sheaves, sprockets, or other products can be removed without dismounting the idler bushing. vailable in sizes as shown below. oxed complete with all mounting hardware and instructions. F O M J J H M O F H N N Taper 4 per foot on diameter. Taper /4" per foot on diameter. Q Radial oad Ratings (bs.) 200 Hours Service ife Part RPM Number SH S SK SF E Service Temperature Range 40 F Minimum +248 F Maximum MST Radial oad Ratings (bs.) 200 Hours Service ife Part RPM Number H- / P- / Q- / Q Service Temperature Range 40 F Minimum +248 F Maximum Part imensions Number F H J M N O SH S SK SF E H- / P- / Q- / Q