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DFARS Specialty Metals
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Ball Bearings
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Open |
Smoother than smooth—the balls inside these bearings roll nearly friction free. You’ll often find them on rapidly rotating parts, from the whirring chuck on a power drill to the spinning shaft on an electric motor.
Open—With no rubber seal to block airflow, these bearings dissipate heat quickly, extending the life of the lubricant and reducing friction over time.
Corrosion-Resistant 440C Stainless Steel—Combine the strength of steel with the corrosion resistance of stainless steel. These bearings won't degrade from water or mild chemicals, such as the ammonia in cleaning solutions. However, they'll weaken when exposed to salt water and harsh chemicals, such as bleach.
ABEC Rating—Bearings with an ABEC rating meet industry tolerance standards established by the Annular Bearing Engineers Committee (ABEC). They're rated on a scale from 1 to 9. The higher the rating, the tighter the tolerance. Bearings rated ABEC 1 or 3 are precise enough for most applications. If your application consistently runs at high speeds or requires high accuracy, consider bearings rated ABEC 5 or higher, since they generate less friction and heat.
Temp. Range, ° F | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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For Shaft Dia. | For Housing ID | Wd. | ABEC Rating | Dynamic Radial Load Cap., lb. | Max. Rotation Speed, rpm | Min. | Max. | Inner Ring Type | Bearing Trade No. | Each | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Open | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Corrosion-Resistant 440C Stainless Steel | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
0.04" | 1/8" | 3/64" | 5 | 20 | 140,000 | -40 | 240 | Standard | R09 | 000000000 | 000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
High-Precision Ball Bearings
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Open |
The most precise bearings we offer, with tolerances tighter than a speck of dust. Rated ABEC 7 out of 9, they meet strict tolerance standards established by the Annular Bearing Engineers Committee (ABEC). You'll find them in equipment that requires both high speed and pinpoint accuracy, such as gyroscopes.
Open—With no rubber seal to block airflow, these bearings dissipate heat quickly, extending the life of the lubricant and reducing friction over time.
Corrosion-Resistant 440C Stainless Steel—Combine the strength of steel with the corrosion resistance of stainless steel. These bearings won't degrade from water or mild chemicals, such as the ammonia in cleaning solutions. However, they'll weaken when exposed to salt water and harsh chemicals, such as bleach.
Temp. Range, ° F | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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For Shaft Dia. | For Housing ID | Wd. | ABEC Rating | Dynamic Radial Load Cap., lb. | Max. Rotation Speed, rpm | Min. | Max. | Inner Ring Type | Bearing Trade No. | Each | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Open | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Corrosion-Resistant 440C Stainless Steel | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
0.04" | 1/8" | 3/64" | 7 | 5 | 100,000 | -10 | 240 | Standard | R09 | 000000 | 000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Pivot Bearings
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Single-Ended Pivot Bearing | Double-Ended Pivot Bearing | Deflection Angle |
Also known as flexure bearings, these bearings are best for applications that require small, precise oscillating motion with limited twisting such as gimbals, vibration hoppers, and optical devices. They have rotating sleeves connected by springs to create smooth motion without the need for lubricants. When used within their rated capacities, they don't require any maintenance. Clamp on, press fit, or use a set screw or pin to install.
Radial Load Cap., lb. | Spring | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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For Housing ID | Overall Lg. | Deflection Angle | in Compression | in Tension | Sleeve Material | Type | Rate | Lubrication | Temp. Range, ° F | Mounting Fasteners Included | Each | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Single-Ended Pivot Bearing | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1/8" | 3/16" | -15° to 15° | 0.95 | 3.5 | Stainless Steel | Leaf | 0.0003 in·lbf/1° | Not Required | -100 to 375 | No | 0000000 | 0000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Double-Ended Pivot Bearing | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
1/8" | 3/16" | -15° to 15° | 2 | 4.5 | Stainless Steel | Leaf | 0.0003 in·lbf/1° | Not Required | -100 to 375 | No | 0000000 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Shims
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With thickness tolerances as fine as a strand of hair, these shims precisely align, space, and level components on shafts, arbors, and machinery.
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.
Thk. | Thk. Tolerance | ID Tolerance | OD Tolerance | Min. Hardness | Pkg. Qty. | Pkg. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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18-8 Stainless Steel | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3/64" ID × 1/8" OD | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
0.001" | -0.0005" to 0.0005" | 0" to 0.005" | -0.005" to 0.005" | Rockwell B70 | 25 | 000000000 | 000000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
0.002" | -0.0005" to 0.0005" | 0" to 0.005" | -0.005" to 0.005" | Rockwell B70 | 25 | 000000000 | 00000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
0.003" | -0.0005" to 0.0005" | 0" to 0.005" | -0.005" to 0.005" | Rockwell B70 | 25 | 000000000 | 00000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
0.004" | -0.0005" to 0.0005" | 0" to 0.005" | -0.005" to 0.005" | Rockwell B70 | 25 | 000000000 | 00000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
0.005" | -0.0005" to 0.0005" | 0" to 0.005" | -0.005" to 0.005" | Rockwell B70 | 25 | 000000000 | 00000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
0.006" | -0.0005" to 0.0005" | 0" to 0.005" | -0.005" to 0.005" | Rockwell B70 | 25 | 000000000 | 00000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
0.008" | -0.0005" to 0.0005" | 0" to 0.005" | -0.005" to 0.005" | Rockwell B70 | 25 | 000000000 | 00000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
0.01" | -0.001" to 0.001" | 0" to 0.005" | -0.005" to 0.005" | Rockwell B70 | 25 | 000000000 | 00000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
0.012" | -0.001" to 0.001" | 0" to 0.005" | -0.005" to 0.005" | Rockwell B70 | 25 | 000000000 | 00000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
0.014" | -0.001" to 0.003" | 0" to 0.005" | -0.005" to 0.005" | Rockwell B70 | 25 | 000000000 | 00000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
0.016" | -0.002" to 0.002" | 0" to 0.005" | -0.005" to 0.005" | Rockwell B70 | 25 | 000000000 | 00000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||