ZERO-MX SERVOLSS OUPLINGS For high performance servo motor and demanding motion control applications High torsional stiffness for precision positioning Eco-Friendly, dapted to RoHS Directive with no banned substances Low inertia for high speed reversing applications Zero backlash and low hysteresis ensures repeatable precise positioning Low bearing loads ll fasteners are corrosion resistant luminum lloy onstruction 304 Stainless steel disc packs ll models have clamp hubs vailable in sizes in single and double disc models. Double disc models provide highest misalignment capability. Operating temperature range is -22 to +22 F (-30 to +00) Torque ratings range from 0.5 to 250Nm. Hubs and center members manufactured of aluminum alloy for strength and durability. oth are treated to prevent oxidation and to preserve appearance. Disc members are made of 304 stainless steel. ouplings are precisely assembled using high strength, corrosion resistant fasteners. Integral clamp style hubs provide fast, easy mounting. RoHS compliant manufactured of RoHS compliant materials and contain no banned substances. 2 www.zero-max.com Phone 800.533.73 763.546.4300 Fax 763.546.8260
SERVOLSS OUPLINGS FOR EVERY SERVO SYSTEM REQUIREMENT Today s servo motor applications are more demanding than ever. The precision positioning requirements and high reverse load characteristics of and D servomotor applications necessitate a coupling design that specifically addresses the needs of these sophisticated systems. resonant operating frequency of most equipment. Zero acklash is another key requirement of a high performance Low Inertia is a critical feature of a superior servo coupling. The inertia should be low so as not to add significantly to overall inertia of the servo system. The lower the inertia, the less energy required by the motor to move the system and therefore, higher acceleration is possible. ecause Zero-Max Servolass couplings are made from 7075-T6 aluminum they have very low inertia. High torsional stiffness is an important quality of any high performance coupling. Low torsional stiffness couplings will reduce system performance and accuracy. The torsional stiffness characteristic of the Zero-Max Servolass coupling increases the system resonant frequency which exceeds the servo coupling. coupling may be considered zero backlash and still have a large amount of windup. Zero backlash is the ability of the coupling to maintain the same relative relationship between the input and output shaft without lost motion. The Zero-Max Servolass coupling is a zero backlash coupling and it exhibits a very low amount of windup. Misalignment capability of a coupling is also important in a motion control system. Usually, the alignment of a well manufactured servo system will be very good. Over time and under high load conditions, this alignment may deteriorate. nother important benefit of a high misalignment capability is the low reaction loads on the bearings in the system. The Zero-Max Servolass coupling utilizes a design that provides flexibility but does not sacrifice any of the torque capability or the torsional stiffness capability and therefore minimizes the reaction loads to the servo motor bearings. 3
SERVOLSS S SERIES For high performance servo motor and demanding motion control applications High torsional stiffness for precision positioning Eco-Friendly, adapted to RoHS Directive with no banned substances Low inertia for high speed applications Zero backlash and low hysteresis ensures repeatable precise positioning S Series Servolass Double Disc Specifications Model Operating Torque Maximum RPM Torsional Stiffness xial Stiffness Misalignment apacity Parallel ngular xial Moment of Inertia Weight Style in.lb. (Nm) r/min in.lb./deg. (Nm/rad) lb./in. (N/mm) inch degree ± inch ± lb.in. 2 kgm 2 (x0-6 ) Oz. (gm) S005R 4.4 (0.5) 0,000 39 (250) 400 (70) 0.002 (0.05) 0.5 0.004 (0.0) 0.002 (0.36) 0.35 (0) S00R 7 (0.8) 0,000 08 (700) 400 (70) 0.004 (0.) 0.008 (0.20) 0.0027 (0.79) 0.53 (5) S020R 3 (.5) 0,000 286 (,850) 83 (32) 0.006 (0.5) 0.03 (0.33) 0.02 (3.40).3 (36) 0.025 (7.33).9 (53) S030R 35 (4.0) 0,000 68 (4,000) 83 (32) 0.007 (0.8) 0.06 (0.4) 0.032 (9.39) 2.2 (6) 0.039 (.5) 2.4 (69) S035R 53 (6.0) 0,000,390 (9,000) 320 (56) 0.009 (0.24) 0.020 (0.5) 0.092 (26.8) 4.3 (23) 0.0 (29.5) 4.3 (22) S040R 89 (0) 0,000,545 (0,000) 228 (40) 0.009 (0.24) 0.024 (0.6) 0.23 (36.) 4.8 (36) 0.46 (42.6) 5.3 (5) 0.33 (96.9) 8.7 (246) S050R 22 0,000 2,47 (6,000) 37 (24) 0.0 (0.28) 0.03 (0.8) 0.407 (9) 9.7 (275) 0.483 (4) 0.7 (304) 0.862 (252) 5.5 (440) S060R 53 (60) 0,000 5,406 (35,000) 28 (38) 0.03 (0.34) 0.035 (0.9).08 (35) 7.6 (498).29 (377) 9.5 (556) S080R 885 (00) 0,000 0,82 (70,000) 366 (64) 0.02 (0.52) 0.04 (.0) 3.54 (,034) 37.0 (,05) S090R,593 (80) 0,000 7,723 (50,000) 308 (54) 0.02 (0.52) 0.05 (.30) 6.08 (,776) 48.4 (,373) S00R 2,23 (250) 0,000 9,268 (60,000) 37 (55) 0.02 (0.52) 0.06 (.48) 9.26 (2,704) 60.2 (,707) Moment of Inertia and Weight are measured with the maximum bore diameters Tolerance of mounted shaft should be h7 The shafts of the equipment (up to the maximum bore size of the coupling) may be extended into the interior of the coupling without any modification to the Servolass coupling. However, the ends of the shafts must never touch each other. Style Style Style 4 www.zero-max.com Phone 800.533.73 763.546.4300 Fax 763.546.8260
SERVOLSS S SERIES L L DSE 2 ød ød S Series Servolass Double Disc Dimensions Model ores Outside Diameter Overall Length Hub Length Reduced Hub Diameter Distance etween Shaft Ends lamp olt to ore (on reduced hubs) lamp olt to ore lamp olt to End of Hub Min Max D L L N DSE 2 M lamp Screw Size Tightening Torque Size in. lb. (Nm) S005R 0.57 (4) 0.236 (6) 0.63 (6) 0.93 (23.2) 0.309 (7.85) 0.295 (7.5) 0.89 (4.8) 0.098 (2.5) M2.0 3.5 (0.4) S00R 0.57 (4) 0.325* * 0.748 (9).02 (25.9) 0.36 (9.5) 0.299 (7.6) 0.228 (5.8) 0.24 (3.5) M 2.5* 9* ()* S020R 0.875 (5) 0.375 (0).024 (26.0).272 (32.3) 0.423 (0.75) 0.425 (0.8) 0.374 (9.5) 0.30 (3.3) M2.5 9 () S030R 0.875** (5)** 0.5625 (4).339 (34.0).488 (37.8) 0.488 (2.4) 0.850 (2.6) 0.5 (3.0) 0.35 0.492 (2.5) 0.48 (3.75) M3 3 (.5) S035R 0.325 0.625 (6).535 (39.0).890 (48) 0.60 (5.5) 0.669 (7.0) 0.55 (4) 0.77 (4.5) M4 30 (3.4) S040R 0.325** ** 0.750 (9).732 (44.0).890 (48) 0.60 (5.5).65 (29.6) 0.669 (7.0) 0.433 () 0.669 (7) 0.77 (4.5) M4 30 (3.4) S050R 0.375** (0)**.000 2.205 (56.0) 2.354 (59.8) 0.807 (20.5).496 (38) 0.739 (8.8) 0.57 (4.5) 0.866 (22) 0.236 (6) M5 62 (7) S060R 0.500** (2)**.875 2.677 (68.0) 2.886 (73.3) 0.992 (25.2).8 (46) 0.902 (22.9) 0.689 (7.5).043 (26.5) 0.305 (7.75) M6 24 (4) S080R 0.875 (20).375 (35) 3.228 (82.0) 3.858 (98).8.496 (38.0).02 (28) 0.354 (9) M8 266 S090R.000.5 (40) 3.622 (92.0) 3.882 (98.6).8.520 (38.6).339 (34) 0.354 (9) M8 266 S00R.438 (35).75 (45) 4.095 (04.0) 4.000 (0.6).8.638 (4.6).535 (39) 0.354 (9) M8 266 *S00 with a bore of 8mm or 0.325" will have a M2 clamp screw and a tightening torque of 3.5 in lbs. or 0.4Nm ** Reduced Hub Dimensions Model Min Max S030R S040R 0.875 (5) 0.325 0.375 (0) 0.5625 (5) øn New Zero-Max onfigurable 3D D Downloads. www.zero-max.com S050R 0.375 (0) 0.750 (9) S060R 0.500 (2) 0.9375 (24) www.zero-max.com Phone 800.533.73 763.546.4300 Fax 763.546.8260 5
SERVOLSS SD SERIES For high performance servo motor and demanding motion control applications High torsional stiffness for precision positioning Eco-Friendly, adapted to RoHS Directive with no banned substances Low inertia for high speed applications Zero backlash and low hysteresis ensures repeatable precise positioning SD Series Servolass Single Disc Specifications Model Operating Torque Maximum RPM Torsional Stiffness xial Stiffness Misalignment apacity Parallel ngular xial Moment of Inertia Weight Style in.lb. (Nm) r/min in.lb./deg. (Nm/rad) lb./in. (N/mm) inch degree ± inch ± lb.in. 2 kgm 2 (x0-6 ) Oz. (gm) SD005R SD00R SD020R SD030R SD035R SD040R SD050R SD060R SD080R SD090R SD00R 4.4 (0.5) 7 (0.8) 3 (.5) 35 (4.0) 53 (6.0) 89 (0) 22 53 (60) 885 (00),593 (80) 2,23 (250) 0,000 0,000 0,000 0,000 0,000 0,000 0,000 0,000 0,000 0,000 0,000 77 (500) 26 (,400) 572 (3,700),236 (8,000) 2,780 (8,000) 3,089 (20,000) 4,943 (32,000) 0,82 (70,000) 2,625 (40,000) 5,446 (00,000) 8,535 (20,000) 799 (40) 799 (40) 365 (64) 365 (64) 640 (2) 457 (80) 274 (48) 436 (76.4) 73 (28) 66 (08) 664 () 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.5 0.002 (0.05) 0.004 (0.0) 0.006 (0.5) 0.008 (0.2) 0.00 (0.25) 0.02 (0.3) 0.06 (0.4) 0.08 (0.45) 0.02 (0.55) 0.03 (0.65) 0.03 (0.74) 0.0009 (0.25) 0.009 (0.58) 0.008 (2.36) 0.04 (4.00) 0.02 (6.06) 0.028 (8.2) 0.063 (8.4) 0.056 (6.4) 0.078 (23.0) 0.0 (29.5) 0.88 (54.9) 0.263 (77.) 0.339 (99.3) 0.49 (44) 0.704 (206) 0.98 (268) 2.43 (709.3) 4.20 (,227) 6.36 (,858) 0.25 (7) 0.39 () 0.9.2 (33).4 (4).7 (49) 3.0 (84) 2.7 (76) 3.2 (90) 3.7 (05) 5.5 (56) 6.5 (85) 7.5 (24) 9.8 (279).9 (337) 4 (396) 25.6 (727) 33.8 (959) 4.6 (,8) Moment of Inertia and Weight are measured with the maximum bore diameters Tolerance of mounted shaft should be h7 The shafts of the equipment (up to the maximum bore size of the coupling) may be extended into the interior of the coupling without any modification to the Servolass coupling. However, the ends of the shafts must never touch each other. Style Style Style 6 www.zero-max.com Phone 800.533.73 763.546.4300 Fax 763.546.8260
SERVOLSS SD SERIES L L DSE ød 2 ød SD Series Servolass Single Disc Dimensions Model ores Outside Diameter SD005R 0.57 (4) SD00R 0.57 (4) SD020R 0.875 (5) SD030R 0.875** (5)** SD035R 0.325 SD040R 0.325** ** SD050R 0.375** (0)** SD060R 0.500** (2)** SD080R 0.875 (20) SD090R.000 SD00R.438 (35) Overall Length Hub Length Reduced Hub Diameter Distance etween Shaft Ends lamp olt to ore (on reduced hubs) *SD00 with a bore of 8mm or 0.325" will have a M2 clamp screw and a tightening torque of 3.5 in lbs. or 0.4Nm lamp olt to ore lamp olt to End of Hub Min Max D L L N DSE 2 M 0.236 (6) 0.325* * 0.375 (0) 0.5625 (4) 0.625 (6) 0.750 (9).000.875.375 (35).5 (40).75 (45) 0.63 (6) 0.748 (9).024 (26.0).339 (34.0).535 (39.0).732 (44.0) 2.205 (56.0) 2.677 (68.0) 3.228 (82.0) 3.622 (92.0) 4.095 (04.0) 0.657 (6.7) 0.762 (9.35) 0.9 (23.5).075 (27.3).339 (34).339 (34).709 (43.4) 2.0 (53.6) 2.677 (68) 2.689 (68.3) 2.748 (69.8) 0.309 (7.85) 0.36 (9.5) 0.423 (0.75) 0.488 (2.4) 0.60 (5.5) 0.60 (5.5) 0.807 (20.5) 0.992 (25.2).8.8.8 0.850 (2.6).65 (29.6).496 (38).8 (46) 0.039 (.0) 0.04 (.05) 0.065 (.65) 0.098 (2.5) 0.8 (3.0) 0.8 (3.0) 0.094 (2.4) 0.26 (3.2) 0.35 0.327 (8.3) 0.386 (9.8) 0.35 0.433 () 0.57 (4.5) 0.689 (7.5) 0.89 (4.8) 0.228 (5.8) 0.374 (9.5) 0.492 (2.5) 0.55 (4) 0.669 (7) 0.866 (22).043 (26.5).02 (28).339 (34).535 (39) 0.098 (2.5) 0.24 (3.5) 0.30 (3.3) 0.48 (3.75) 0.77 (4.5) 0.77 (4.5) 0.236 (6) 0.305 (7.75) 0.354 (9) 0.354 (9) 0.354 (9) lamp Screw Size Size M2.0 M 2.5* M2.5 M3 M4 M4 M5 M6 M8 M8 M8 Tightening Torque in. lb. (Nm) 3.5 (0.4) 9* ()* 9 () 3 (.5) 30 (3.4) 30 (3.4) 62 (7) 24 (4) 266 266 266 ** Reduced Hub Dimensions Model Min Max SD030R SD040R SD050R SD060R 0.875 (5) 0.325 0.375 (0) 0.500 (2) 0.375 (0) 0.5625 (5) 0.750 (9) 0.9375 (24) øn New Zero-Max onfigurable 3D D Downloads. www.zero-max.com www.zero-max.com Phone 800.533.73 763.546.4300 Fax 763.546.8260 7
SERVOLSS The right coupling can add performance and longevity to your system! High Torsional Stiffness Increased system accuracy Enables high-speed operation Improved system stability High Quality High grade materials used throughout the coupling Machined and assembled by highly skilled technicians with certified tooling Low radial stiffness Improved bearing life Reduce operating temperatures Improved system accuracy Ultra low weight design Low inertia 7075-T6 High strength aluminum Lower inertia than comparable bellows designs Precision designed clamp hub Positive shaft hub connection Zero acklash Trouble free assembly 8 www.zero-max.com Phone 800.533.73 763.546.4300 Fax 763.546.8260
SERVOLSS Typical Hysteresis urves Zero-Max Servolass oupling Typical Zero acklash Jaw Type oupling Phase Phase Torque Torsional Windup Torque New Zero-Max onfigurable 3D D Downloads. www.zero-max.com www.zero-max.com Phone 800.533.73 763.546.4300 Fax 763.546.8260 9
SELETING SERVOLSS OUPLING Feed Screw Systems. Oscillation phenomena of servomotors If the resonant frequency of the entire feed-screw system is under 400~500Hz, oscillation may occur depending on the gain adjustment of the servomotor. The problems can be avoided by raising the resonant frequency of the mechanical system or adjusting the tuning function (filter function) of the servomotor. ontact us for unclear points concerning oscillation phenomena of servomotors. 2. Resonance caused by stepping motors Resonance can occur within a certain speed range due to the pulsation frequency of the stepping motor and the natural frequency of the entire system. Resonance can be avoided by not operating near resonant speed, or by reviewing the resonant frequency in the design phase. ontact us for unclear points concerning resonance of stepping motors. How to evaluate the resonant frequency of feed-screw system. Select the coupling according to the normal operating torque and maximum torque of the servomotor/stepping motor. 2. In the following feed-screw system, evaluate the entire resonant frequency: Nf from the torsional spring constant: K of the coupling and feed screw, the moment of inertia: J of the driving side and the moment of inertia: J2 of the driven side. Nf = 2π Motor oupling K + J ( J2) Feed screw earing Table Nf: Eigenfrequency of the entire feed-screw system [Hz] K: Torsional spring constant of the coupling and feed screw [N m/rad] J: Moment of inertia of the driving side J2: Moment of inertia of the driven side J J2 Selection Procedure. alculate torque Ta applied to the coupling based on the motor output P and coupling operating rotation speed n. Ta[N m] = 9550 x R [kw] n [min - ] 2. alculate corrected torque Td applied to the coupling after deciding the service factor K based on load conditions. Td = Ta x K In servomotor drive, multiply the service factor K=.2~.5 by the maximum torque of servomotor Ts. Td = Ts (.2~.5) 3. Select a coupling size with permissible torque Tn that becomes greater than the corrected torque Td. Tn Td 4. Depending on the bore diameters, the coupling permissible torque may be limited. Refer to the "Specification" and "Standard bore diameter". 5. onfirm if the required shaft diameter does not exceed the maximum bore diameter of the selected size. If our standard line of Servolass coupling will not exactly fit your system needs, contact us for a custom design. ustom bores Ultra high speeds Special finishes Special Lengths Designed for operation in special environments 0 www.zero-max.com Phone 800.533.73 763.546.4300 Fax 763.546.8260
SERVOLSS HOW TO ORDER Part Numbering Structure TYPE ode Description S Double Flex SD Single Flex SIZE ode Description 005 Size 005 00 Size 00 020 Size 020 030 Size 030 035 Size 035 040 Size 040 050 Size 050 060 Size 060 080 Size 080 090 Size 090 00 Size 00 R ode RoHS ompliant Note: this is the standard design ( ore x ore ) See hart Servolass couplings are standard without keyways. Keyways are available upon request. Example: S050R (20 mm x /2") Double Flex design Size 050 20mm bore without keyway x /2" bore without keyway Note: The hub design of Servolass couplings will provide the necessary clamping force to hold the shaft in a dynamic application without the use of keyways. Keyways are available upon request. Please reference the bore size chart below for more details on bore sizes and torque. ore Size : Standard ore Size Full Rated Torque. : Standard ore, See the operating torque in the ore Size and Operating Torque table above right mm SD/S005R ore Size D D2 mm SD/S00R 0.57 4 SD/S020R SD/S030R 0.875 5 0.236 6 0.250 6.35 0.275 7 SD/S035R Model SD/S040R 0.325 8 0.354 9 0.375 9.525 0.375 0 0.433 SD/S050R 0.500 2 0.563 4 SD/S060R 0.563 5 0.625 6 0.708 8 0.750 9 SD/S080R 0.83 20 0.875 22 0.938 24 SD/S090R.00 25.0 28.88 30.250 32.375 35.500 38.563 40.625 42.750 45 SD/S00R ore Size and Operating Torque ore size affects and limits the operating torque of the coupling Model ore oupling Operating Torque mm in-lbs Nm SD/S020R 0.875 5.2 SD/S030R 0.875 5 25 2.8 0.236 6 30 3.4 SD/S040R 0.325 8 80 9 SD/S050R 0.375 0 95 22 SD/S060R 0.500 2 45 5 www.zero-max.com Phone 800.533.73 763.546.4300 Fax 763.546.8260
Servolass ouplings Designed for demanding servomotor applications. Zero backlash, high torsional stiffness coupling. Features flexible metal discs and keyless clamp-type mounting hubs. ouplings are RoHS compliant. ETP Shaft Locking onnections Designed for quick, easy and accurate assembly of mounted shaft components. oth inch and metric bore connections are available from stock. D ouplings These high performance couplings out last bellows and steel disc design couplings. The unique design of the composite disc enables the D ouplings to withstand punishing applications and deliver high precision performance. Roh lix Linear ctuators Roh Lix Linear ctuators convert rotary motion into precise linear motion. vailable in five models. Roh Lix actuators have thrust ratings from 5 to 200 lbs. ll models feature built in overload protection. Schmidt Offset ouplings Schmidt Offset ouplings are designed to handle high amounts of parallel offset up to 7.00". Standard models with torque capacities up to 459,000 in-lbs. djustable Speed Drive Easy to install and maintenance free. Zero-Max Drives offer infinitely variable speeds from 0 rpm to /4 of input rpm. 5 models with torque ranges from 2 in-lbs to 200 in-lbs. Torq-Tender ouplings Torq-Tender ouplings provide reliable overload protection in any mechanical power transmission system. Torque ranges from 2 to 3000 in-lbs. rown Gear Drives rown Gear Drives are available with : and 2: ratios. High quality GM class 0 spiral bevel gears. Stainless steel shafts and aluminum housings are standard on all rown Gear Drives. ontrol-flex ouplings ontrol-flex ouplings are zero backlash couplings designed for encoder and instrumentation type applications. OHL Overhung Load dapters OHL Overhung Load dapters are designed to eliminate radial and axial loads from a hydraulic pump or motor. models available for mounts from SE to SE F. Warranty. Zero-Max, Inc. the manufacturer, warrants that for a period of 2 months from date of shipment it will repair, or at its option, replace any new apparatus which proves defective in material or workmanship, or which does not conform to applicable drawings and specifications approved by the manufacturer. ll repairs and replacements shall be F.O.. factory. ll claims must be made in writing to the manufacturer. In no event and under no circumstances shall manufacturer be liable for (a) damages in shipment; (b) failures or damages due to misuse, abuse, improper installation or abnormal conditions of temperature, dirt, water or corrosives; (c) failures due to operation, intentional or otherwise, above rated capacities, and (d) non-authorized expenses for removal, inspection, transportation, repair or rework. Nor shall manufacturer ever be liable for consequential and incidental damages, or in any amount greater than the purchase price of the apparatus. Zero Max, Inc. reserves the right to discontinue models or to change specifications at any time without notice. No discontinuance or change shall create any liability on the part of Zero-Max, Inc. in respect to its products in the hands of customers or products on order not incorporating such changes even though delivered after any such change. This warranty is in LIEU OF LL OTHER WRRNTIES, EXPRESS OR IMPLIED, INLUDING (UT NOT LIMITED TO) NY IMPLIED WRRNTIES OF MERHNTILITY OR FITNESS FOR PRTIULR PURPOSE. THE TERMS OF THIS WRRNTY ONSTITUTE LL UYER S OR USER S SOLE ND EXLUSIVE REMEDY, ND RE IN LIEU OF NY RIGHT TO REOVER FOR NEGLIGENE, REH OF WRRNTY, STRIT TORT LIILITY OR UPON NY OTHER THEORY. ny legal proceedings arising out of the sale or use of this apparatus must be commenced within 8 months of the date of purchase. UTION: Rotating equipment must be guarded. lso refer to OSH specifications and recommendations. Zero-Max, D, ETP, Servolass, Torq-Tender, ontrol-flex, Posi-Lok, Roh'Lix and OHL are registered trademarks of Zero-Max, Inc. In U.S.. Zero-Max 200 Printed in U.S.. 3200 Sixth venue North, Plymouth, Minnesota 5544-5509 Phone: 800-533-73 (763) 546-4300 Fax (763) 546-8260 www.zero-max.com