Idler Pulleys - Black Delrin Pulleys and Steel Inserts

Pulleys
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Black Delrin® Pulleys

BP Series Pulleys

The chemical composition, regular structure, and high crystallinity of Delrin® give SAVA Black Delrin® pulleys a combination of physical properties not available with either metals or other plastics such as:

• High mechanical strength and rigidity
• Fatigue endurance unmatched by other plastics
• Excellent resistance to moisture, gasoline, sunlight, solvents, and many other neutral chemicals

• Good electrical insulating characteristics
• Excellent dimensional stability and wide useful temperature range (+347°F melt point)
• Resiliency
• Natural lubricity

SAVA Item	REF. Old Part No.	Other Bores Are Available A +-.005	B +-.020	C +-.020	E +-.010	R REF.	Cable Sizes To
BP2031	BP-231-2	.128	.310	.375	.093	.015	1/32
BP2044	BP-243	.128	.438	.500	.125	.025	3/64
BP2050	BP-250	.128	.500	.625	.125	.015	1/32
BP2063	BP-263	.128	.625	.750	.156	.025	3/64
BP3081	BP-381	.190	.813	1.000	.170	.025	3/64
BP3088	BP-387	.190	.885	1.070	.219	.025	3/64
BP3106	BP-310	.190	1.063	1.250	.219	.035	1/16
BP4122	BP-416	.254	1.225	1.575	.330	.095	3/16
BP4125	BP-413	.254	1.250	1.500	.281	.050	3/32
BP4138	BP-414	.254	1.375	1.730	.281	.065	1/8
BP5158	BP-516	.316	1.580	1.950	.405	.125	1/4
The following pulleys are manufactured from nylon. They are primarily used for fiber rope; however, in many cases they function well with cables.
BP4061	BP-406	.254	.615	.960	.400	.170	1/4-5/16
BP4100	BP-411	.254	1.000	1.375	.400	.135	1/4
BP4118	BP-412	.268	1.175	1.750	.440	.130	1/4

BI Series Inserts

These inexpensive steel inserts can be used to reduce bore diameters. They are made wider than our pulley bearings so that the pulley can rotate freely while the insert is held on the sides.
The inserts are case-hardened and black oxide finished.
USED PRIMARILY ON OP AND LP SERIES PULLEYS

SAVA Item	REF. Old Part No.	A +-.002	C +-.002	D REF.
BI192531	BI-45	3/16	1/4	5/16
BI255050	BI-50	1/4	1/2	1/2
B1315050	BI-55	5/16	1/2	1/2
B1385050	BI-60	3/8	1/2	1/2
B1387575	BI-65	3/8	3/4	3/4
B1507575	BI-70	1/2	3/4	3/4