Engineering Specs
qd style idler bearings - ball bearing components
| part # |
100 RPM |
500 RPM |
1000 RPM |
1200 RPM |
1800 RPM |
| radial load capacity in lbs (based on 2500 hour service
life) |
| sh-bb |
1752 |
1024 |
813 |
765 |
668 |
| sds-bb |
1752 |
1024 |
813 |
765 |
668 |
| sd-bb |
1752 |
1024 |
813 |
765 |
668 |
| sk-bb |
2336 |
1366 |
1084 |
1020 |
891 |
| sk-bb hd |
2901 |
1697 |
1347 |
1267 |
1107 |
| sf-bb |
2555 |
1494 |
1186 |
1116 |
975 |
| e-bb |
6113 |
3575 |
2837 |
2670 |
2332 |
| f-bb |
6113 |
3575 |
2837 |
2670 |
2332 |
qd style idler bearings - needle bearing components
| part # |
100 RPM |
500 RPM |
1000 RPM |
1200 RPM |
1800 RPM |
| radial load capacity in lbs (based on 2500 hour service
life) |
| sh-nb |
4483 |
2766 |
2247 |
2127 |
1883 |
| sds-nb |
4483 |
2766 |
2247 |
2127 |
1883 |
| sd-nb |
6266 |
3867 |
3141 |
2973 |
2633 |
| sk-nb |
6266 |
3867 |
3141 |
2973 |
2633 |
| sf-nb |
2555 |
1494 |
1186 |
1116 |
975 |
| e-nb |
9763 |
6024 |
4893 |
4633 |
4102 |
| f-bb |
9763 |
6024 |
4893 |
4633 |
4102 |
taper-lock style idler bearings - ball bearing components
| part # |
100 RPM |
500 RPM |
1000 RPM |
1200 RPM |
1800 RPM |
| radial load capacity in lbs (based on 2500 hour service
life) |
| 1610-bb |
1752 |
1024 |
813 |
765 |
668 |
| 1615-bb |
1752 |
1024 |
813 |
765 |
668 |
| 2012-bb |
2336 |
1366 |
1084 |
1020 |
891 |
| 2012-bb x 1 |
2555 |
1494 |
1186 |
1116 |
975 |
| 2517-bb |
2555 |
1494 |
1186 |
1116 |
975 |
taper-lock style idler bearings - needle bearing components
| part # |
100 RPM |
500 RPM |
1000 RPM |
1200 RPM |
1800 RPM |
| radial load capacity in lbs (based on 2500 hour service
life) |
| 1610-nb |
3590 |
2215 |
1800 |
1704 |
1509 |
| 1615-nb |
5281 |
3259 |
2647 |
2506 |
2219 |
| 2012-nb |
4483 |
2766 |
2247 |
2127 |
1183 |
| 2517-nb |
8512 |
5252 |
4266 |
4039 |
3577 |
split taper style idler bearings - ball bearing components
| part # |
100 RPM |
500 RPM |
1000 RPM |
1200 RPM |
1800 RPM |
| radial load capacity in lbs (based on 2500 hour service
life) |
| h-bb |
1113 |
651 |
517 |
486 |
425 |
| p1-bb |
1752 |
1024 |
813 |
765 |
668 |
| b-bb |
2336 |
1366 |
1084 |
1020 |
891 |
| q1-bb 3/4 |
2336 |
1366 |
1084 |
1020 |
891 |
| q1-bb 1 |
1555 |
1494 |
1186 |
1116 |
975 |
| r1-bb |
6113 |
3575 |
2837 |
2670 |
2332 |
htd idler bearings - ball bearing components
| part # |
100 RPM |
500 RPM |
1000 RPM |
1200 RPM |
1800 RPM |
| radial load capacity in lbs (based on 2500 hour service
life) |
| 29-8m-50bb |
2336 |
1366 |
1084 |
1020 |
891 |
| 29-8m-85bb |
2336 |
1366 |
1084 |
1020 |
891 |
| 27-14m-40bb |
2555 |
1494 |
1186 |
1116 |
975 |
| 27-14m-55bb |
2555 |
1494 |
1186 |
1116 |
975 |
| 27-14m-85bb* |
6113 |
3575 |
2837 |
2670 |
2332 |
| 31-14m-115bb |
6113 |
3575 |
2837 |
2670 |
2332 |
htd idler bearings - needle bearing components
| part # |
100 RPM |
500 RPM |
1000 RPM |
1200 RPM |
1800 RPM |
| radial load capacity in lbs (based on 2500 hour service
life) |
| 19-8m-30nb |
4483 |
2766 |
2247 |
2127 |
1883 |
| 29-8m-50nb |
6266 |
387 |
3141 |
2973 |
2633 |
| 29-8m-85nb |
6266 |
387 |
3141 |
2973 |
2633 |
| 27-14m-40nb |
6266 |
387 |
3141 |
2973 |
2633 |
| 27-14m-55nb |
6266 |
387 |
3141 |
2973 |
2633 |
| 27-14m-85nb* |
12249 |
7558 |
6139 |
5812 |
5147 |
| 31-14m-115nb |
12249 |
7558 |
6139 |
5812 |
5147 |
polychain gt2 style belt idler sprockets - ball bearing components
| part # |
100 RPM |
500 RPM |
1000 RPM |
1200 RPM |
1800 RPM |
| Radial Load Capacity in lbs (based on 2500 service life) |
| 8m-32s-12bb |
2901 |
651 |
517 |
486 |
425 |
| 8m-32s-21bb |
2901 |
651 |
517 |
486 |
425 |
| 8m-36s-36bb |
4972 |
2849 |
2261 |
2128 |
1859 |
| 8m-36s-62bb |
4972 |
2849 |
2261 |
2128 |
1859 |
| 14m-30s-20bb |
7390 |
4322 |
3430 |
3228 |
2820 |
| 14m-30s-37bb |
7390 |
4322 |
3430 |
3228 |
2820 |
| 14m-34s-68bb |
11303 |
6610 |
5246 |
4937 |
4313 |
| 14m-34s-90bb |
11303 |
6610 |
5246 |
4937 |
4313 |
cast flat idler bearings - ball bearing components
| part # |
100 RPM |
500 RPM |
1000 RPM |
1200 RPM |
1800 RPM |
| radial load capacity in lbs (based on 2500 hour service
life) |
| cp1-bb |
1725 |
1024 |
813 |
765 |
668 |
| cp2-bb |
1725 |
1024 |
813 |
765 |
668 |
| cp3-bb |
1725 |
1024 |
813 |
765 |
668 |
| cp4-bb |
2555 |
1494 |
1186 |
1116 |
975 |
| cp6-bb |
2555 |
1494 |
1186 |
1116 |
975 |
cast flat idler bearings - needle bearing components
| part # |
100 RPM |
500 RPM |
1000 RPM |
1200 RPM |
1800 RPM |
| radial load capacity in lbs (based on 2500 hour service
life) |
| cp1-nb |
4483 |
2766 |
2247 |
2127 |
1883 |
| cp2-nb |
7181 |
4431 |
3599 |
3407 |
3017 |
| cp3-nb |
7181 |
4431 |
3599 |
3407 |
3017 |
| cp4-nb |
9764 |
6024 |
4894 |
4634 |
4102 |
| cp6-nb |
12250 |
7558 |
6139 |
5812 |
5140 |
QD and Split Taper are registered trademarks of Emerson Electric
Taper-Lock is a registered trademark of Rockwell Automation.
HTD, Poly Chain, and GT are registered trademarks of Gates.
The trade names, trademarks, and/or registered trademarks of others are used herein for product comparisons only, are the property of their respective owners, and are not owned or controlled by Circular Motion. Radial loads are calculated by engineers from our bearing manufacturers,
Circular Motion does not represent or warrant the accuracy of this document.
Competitor names and part numbers are used for comparison purposes only,
Circular Motion does not represent competitors named in this catalog.
For Ordering, Pricing, and Inquiries:
Tollfree: 1-888-779-9040
Fax: 1-989-779-9020