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DFARS Specialty Metals
Shims for Ball Bearing Outer Rings
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Boost bearing efficiency and lifespan. Often used on motor shafts, these shims evenly distribute the load between multiple bearings by creating space between their outer rings. This prevents excessive pressure on any single bearing, maintaining proper alignment for smooth operation and reduced wear.
You can stack multiple shims to achieve your exact thickness, but stacking more than four may cause them to shift. Remember, fewer shims are better, so a couple of thicker shims are more stable than a bunch of thin shims.
18-8 Stainless Steel—The choice for wet and outdoor environments, these shims resist rust. However, they’ll corrode or pit when exposed to salt water and chemicals.
Highly Corrosion-Resistant 316 Stainless Steel—Superior to 18-8 stainless steel, these shims won't degrade when exposed to harsh weather, salt water, and most chemicals.
Brass—With a warm, polished look, these shims are often chosen for their appearance. Similar to 18-8 stainless steel, brass is corrosion resistant enough to stand up to wet environments.
For Bearing | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Trade No. | ID | OD | ID | ID Tolerance | OD | OD Tolerance | Min. Hardness | Choose a Thickness | Pkg. Qty. | Pkg. | |||
18-8 Stainless Steel | |||||||||||||
| R1-4, R144 | 5/64", 1/8" | 1/4" | 0.167" | 0" to 0.005" | 0.248" | -0.005" to 0" | Rockwell B70 | 0.003", 0.005", 0.007", 0.01", 0.02" | 25 | 93574A200 | 000000 | ||
Highly Corrosion-Resistant 316 Stainless Steel | |||||||||||||
| R1-4, R144 | 5/64", 1/8" | 1/4" | 0.167" | 0" to 0.005" | 0.248" | -0.005" to 0" | Rockwell B90 | 0.005", 0.007", 0.01", 0.02" | 10 | 91182A130 | 00000 | ||
Brass | |||||||||||||
| R1-4, R144 | 5/64", 1/8" | 1/4" | 0.167" | 0" to 0.005" | 0.248" | -0.005" to 0" | Rockwell B70 | 0.003", 0.005", 0.007", 0.01", 0.02" | 10 | 92409A300 | 0000 | ||
