OLDHAM LATERAL OFFSET COUPLERS Blind hubs L L L1 disc disc B B D Set screw style Clamp style Controlled bore depth L1 L2 L1 L2 L1 provides a register when pre-assembling Refs. 232, 243 Refs. 234, 235, 245 hubs to shafts Set screw style Clamp style Thro hubs L L disc disc D B B Set screw style Clamp style Thro bores allow disc L1 L2 L1 L2 replacement without disturbing shaft alignment Refs. 450, 454 Refs. 452, 453, 456 Set screw style Clamp style Blank hubs Coupler Complete hub ref. D L L size 06 231.06.00 6.4 12.7 09 231.09.00 9.5 12.7 D 13 231.13.00 12.7 15.9 19 231.19.00 19.1 22.0 25 231.25.00 25.4 28.4 User-adaptable for special needs, e.g. fitting within 33 230.33.00 33.3 48.0 tubes. Blank hubs are supplied centred with no provision for fastening. External dimensions 41 231.41.00 41.3 50.8 identical with blind hubs. Standard discs (larger sizes are webbed) HOW TO ORDER Combine the HUB REF in the Acetal High torsional stiffness, good bearing Main Table with the BORE REF in the Standard properties, long backlash-free life. Bores Table, e.g. Nylon 11 Resilient, isolates noise & vibration. 452H25.28 Performance approximately 25% that of Hub ref. acetal disc. Bore ref. Order discs separately from the Main Table, e.g. Thro bored discs 236.25 Disc ref. Thro bored discs allow shafts to near-butt, standard thro hole diameter = D x 0.5. To order, add suffix T to order ORDER 2 HUBS + 1 DISC PER COUPLER code, eg., 236.25T Other thro hole diameters are manufactured to order. Specify the disc ref. and thro hole diameter. This should HOW TO INSTALL equal the larger shaft diameter + 2 x max radial error. Correct installation is important for optimum Note that thro bored discs reduce torsional stiffness. operation. See page 18 for details. functional, reliable, quality assured components 16OLDHAM LATERAL OFFSET COUPLERS MAIN TABLE DIMENSIONS & ORDER CODES 12 4 4 Materials & Finishes Coupler Set Screw Clamp D L L1 L2 B1 Fasteners Moment Mass Acetal Nylon 11 Hub sizes 06 to 13: Type Style Style max of inertia (black) (natural) 3 Screw Torque Wrench Brass BS 2874 CZ121 & standard 2 kgm kg Size Chromate & passivate finish Nm mm 8 3 HUB REF DISC REF x 10 x 10 Hub sizes 19 to 57: 06 232.06 6.4 12.7 3.8 5.1 3.18 M3 0.94 1.5 6 2.5 236.06 238.06 Al. Alloy 2011T3 and 2011T8 09 232.09 9.5 12.7 3.8 5.1 5 M3 0.94 1.5 18 4 236.09 238.09 BS 4300/5 FC1 13 232.13 12.7 15.9 4.3 7.3 6.35 M3 0.94 1.5 26 11 236.13 238.13 Fasteners: Alloy steel, black oiled 232.19 M3 0.94 1.5 19 19.1 22.0 6.3 9.4 8 67 12 236.19 238.19 235.19 440 2.33 2.0 Blind & blank hubs: Alocrom finish 232.25 M4 2.27 2.0 25 25.4 28.4 8.6 11.2 12 252 31 236.25 238.25 Thro hubs: 234.25 M3 2.43 2.5 Clear anodised finish 243.33 M4 2.27 2.0 33 33.3 48.0 13.0 22.0 16 1278 86 236.33 238.33 Torque discs: 245.33 M4 5.66 3.0 Types 236 - Acetal (black) 232.41 M5 4.62 2.5 41 41.3 50.8 16.7 17.4 20 3327 148 236.41 238.41 Types 238 - Nylon 11 (natural) 234.41 M4 5.66 3.0 Temperature Range 450H19 M4 2.27 2.0 20C to +60C 19 19.1 26.0 9.4 7.2 8 59 13 236.19 238.19 453H19 440 2.33 2.0 450H25 M5 4.62 2.5 25 25.4 32.4 11.6 9.2 12 252 31 236.25 238.25 452H25 M3 2.43 2.5 SERVICE FACTORS 454H33 M6 7.61 3.0 33 33.3 48.0 15.0 18.0 16 1133 74 236.33 238.33 Duty Factor 456H33 M4 5.66 3.0 450H41 M6 7.61 3.0 Momentary 1 41 41.3 50.8 17.8 15.3 20 3177 142 236.41 238.41 452H41 M4 5.66 3.0 1 hr per day 2 450H50 M8 18.36 4.0 3 hrs per day 4 50 50.0 59.6 20.6 18.4 25.4 7550 208 236.50 452H50 M5 11.40 4.0 6 hrs per day 6 450H57 M8 18.36 4.0 12 hrs per day 8 57 57.1 78.0 28.4 21.2 30 12410 361 236.57 452H57 M6 19.34 5.0 (see note page 14) PERFORMANCE (AT 2OC WITH STANDARD ACETAL DISC) 56 7 1. Blind hubs: Length of parallel bore 0.2. Bores may terminate in 118 incl. angle. Coupler Peak Max compensation Torsional Static Thro hubs: Max permissible hub penetration. Size torque break 3000 r.p.m. 2. Blind hubs: Nominal distance between unchamfered shafts bottomed out to L1. torque Angular Radial Axial Rate Stiffness Thro hubs: Nominal distance between shafts with standard (unbored) disc. Nm Nm deg mm mm deg / Nm Nm / rad 3. Maximum recommended tightening torque (see also next page under Clamp hubs) 06 0.06 0.1 0.05 5.7 10 0.7 4. Values apply to complete couplers with max bores. 09 0.21 0.1 0.05 1.9 30 2 5. Peak torque. Select a size where Peak Torque exceeds the application torque x service factor. 13 0.5 0.1 0.05 0.88 65 4 6. Couplers can provide up to (D x 0.1) radial compensation in extreme cases. 19 1.7 0.2 0.1 0.50 115 10 Observe given values for maximum backlash-free life. 25 4 0.5 0.2 0.1 0.28 205 13 Axial compensation is set on installation. See next page for details. 33 9 0.2 0.15 0.093 615 53 Electrical isolation between shafts > 3kV. 41 17 0.25 0.15 0.048 1200 57 7. Values apply at 50% peak torque with no misalignment, measured shaft-to-shaft with largest 50 30 0.25 0.2 0.042 1375 95 standard bores. 57 44 0.25 0.2 0.022 2610 150 8. Thro hubs can be provided with keyways or D bores. See page 4 for details. 8 STANDARD BORES Coupler B +0.03/0mm Size 2 3 3.175 4 4.763 5 6 6.350 8 9.525 10 12 12.700 14 15 15.875 16 18 19 19.050 20 24 25 30 06 zzz 09 zzzzz 13 zzzzzzz 19 zzzz z z 25 z z z z zz 33 z z z z z zzzz 41 z z z z z z z z z z z z 50 z z z z z z z z z z z z z z 57 z z z z z z z z z z z zz Bore ref. 11 14 16 18 19 20 22 24 28 31 32 35 36 38 40 41 42 45 46 47 48 51 52 56 functional, reliable, quality assured components 17 Thro Hubs Blind Hubs