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| BALLNUTS |
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| Comptrol preloaded and non-preloaded ballnut assemblies are available in over 200 models in base, flange, cut-off flange, or trunnion mounting configurations to accommodate a wide range of rolled thread and precision ground ballscrews. Custom mounting configurations are also available to meet your design requirements. |
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Base Mount
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Flange Mount
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Cut-Off Flange Mount
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Trunnion Mount
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| DIMENSIONS by Screw Diameter |
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CLICK HERE for Comptrol Ballnut Dimensions .625 Dia.pdf.
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CLICK HERE for Comptrol Ballnut Dimensions .750 Dia.pdf.
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CLICK HERE for Comptrol Ballnut Dimensions 1.000 Dia.pdf.
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CLICK HERE for Comptrol Ballnut Dimensions 1.130 Dia.pdf.
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CLICK HERE for Comptrol Ballnut Dimensions 1.500 Dia.pdf.
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CLICK HERE for Comptrol Ballnut Dimensions 2.000 Dia.pdf.
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CLICK HERE for Comptrol Ballnut Dimensions 2.250 Dia.pdf.
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CLICK HERE for Comptrol Ballnut Dimensions 2.500 Dia.pdf.
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CLICK HERE for Comptrol Ballnut Dimensions 3.000 Dia.pdf.
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| Non-Preloaded Ballnuts |
Operating at 90% mechanical efficiency, Comptrol non-preloaded ballnuts offer a definite advantage over other methods of converting rotary motion to linear motion. The smooth rolling contact between the bearing balls and the ballscrew and nut assembly makes it possible to move heavy loads in small increments as low as .0001", often with less power than is required using conventional screws, pneumatics, or hydraulics.
Comptrol non-preloaded nut assemblies are ideal for applications where the applied load is always in one direction. In these types of applications, the bearing balls always ride on one side of the ball groove minimizing the effects of backlash on positioning accuracy and repeatability. However, in positioning load applications where accuracy and repeatability must be considered, a Comptrol preloaded nut assembly is recommended.
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| Preloaded Ballnut Assemblies |
Comptrol preloaded ballnuts offer performance normally expected from a precision ground screw, at a substantially lower price. The unique design of Comptrol's preloaded double nut assemblies allows the load to be attached to the center of the assembly.
Centering the load between two opposing preloaded ballnuts eliminates backlash resulting in truer bi-directional positioning accuracy and repeatability, a more uniform preload, and low friction drag for optimum power transmission efficiency.The factory set preload adapter allows the preload to be set at up to 30% of the applied load for the selected ballscrew. Once set, the preload remains constant throughout the life of the screw. |
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Comptrol Preloaded Ballnut Assemblies Model Numbers
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Mounting Configuration
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Ballscrew
Diameter (in.)
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Flange
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Cut-Off
Flange
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Base
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Trunnion
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0.625
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65-1-204
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65-1-304
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65-1-404
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65-1-504
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65-1-205
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65-1-305
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65-1-405
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65-1-505
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0.750
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65-1-206
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65-1-306
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65-1-406
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65-1-506
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65-1-207
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65-1-307
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65-1-407
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65-1-507
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1.000
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65-1-208
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65-1-308
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65-1-408
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65-1-508
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65-1-209
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65-1-309
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65-1-409
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65-1-509
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65-1-210
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65-1-310
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65-1-410
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65-1-510
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65-1-211
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65-1-311
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65-1-411
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65-1-511
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65-1-212
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65-1-312
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65-1-412
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65-1-512
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1.150
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65-1-213
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65-1-313
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65-1-413
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65-1-513
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1.500
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65-1-214
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65-1-314
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65-1-414
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65-1-514
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65-1-215
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65-1-315
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65-1-415
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65-1-515
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65-1-216
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65-1-316
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65-1-416
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65-1-516
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65-1-226
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65-1-326
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65-1-426
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65-1-526
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2.000
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65-1-217
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65-1-317
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65-1-417
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65-1-517
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65-1-218
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65-1-318
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65-1-418
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65-1-518
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65-1-219
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65-1-319
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65-1-419
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65-1-519
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2.250
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65-1-220
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65-1-320
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65-1-420
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65-1-520
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2.500
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65-1-221
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65-1-321
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65-1-421
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65-1-521
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65-1-222
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65-1-322
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65-1-422
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65-1-522
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3.000
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65-1-223
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65-1-323
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65-1-423
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65-1-523
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Comptrol Non-Preloaded Ballnut Assemblies Model Numbers
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Mounting Configuration
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Ballscrew
Diameter (in.)
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Flange
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Cut-Off
Flange
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Base
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Trunnion
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0.625
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65-0-204
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65-0-304
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65-0-404
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65-0-504
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65-0-205
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65-0-305
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65-0-405
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65-0-505
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0.750
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65-0-206
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65-0-306
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65-0-406
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65-0-506
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65-0-207
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65-0-307
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65-0-407
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65-0-507
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1.000
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65-0-208
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65-0-308
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65-0-408
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65-0-508
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65-0-209
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65-0-309
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65-0-409
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65-0-509
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65-0-210
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65-0-310
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65-0-410
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65-0-510
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65-0-211
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65-0-311
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65-0-411
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65-0-511
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65-0-212
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65-0-312
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65-0-412
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65-0-512
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1.150
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65-0-213
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65-0-313
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65-0-413
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65-0-513
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1.500
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65-0-214
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65-0-314
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65-0-414
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65-0-514
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65-0-215
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65-0-315
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65-0-415
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65-0-515
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65-0-216
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65-0-316
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65-0-416
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65-0-516
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65-0-226
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65-0-326
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65-0-426
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65-0-526
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2.000
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65-0-217
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65-0-317
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65-0-417
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65-0-517
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65-0-218
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65-0-318
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65-0-418
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65-0-518
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65-0-219
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65-0-319
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65-0-419
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65-0-519
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2.250
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65-0-220
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65-0-320
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65-0-420
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65-0-520
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2.500
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65-0-221
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65-0-321
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65-0-421
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65-0-521
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65-0-222
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65-0-322
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65-0-422
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65-0-522
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3.000
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65-0-223
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65-0-323
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65-0-423
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65-0-523
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