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Ball Bearings
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Open |
 |
Shielded |
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.
Shielded—The balls are covered just enough to keep out large particles while allowing air to pass through and dissipate heat.
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.
Extended Inner Ring—Connect to mating parts without the need for a spacer. The inner ring juts out farther than the outer ring, so shaft collars and other objects won't touch the bearing's moving parts.
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 | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | |||||||||||||
| 5/32" | 5/16" | 7/64" | 5 | 80 | 63,000 | -40 | 240 | Standard | R155 | 57155K351 | 00000 | ||
Shielded | |||||||||||||
Corrosion-Resistant 440C Stainless Steel | |||||||||||||
| 5/32" | 5/16" | 1/8" | 5 | 80 | 63,000 | -40 | 240 | Standard | R155-2Z | 57155K371 | 0000 | ||
| 5/32" | 5/16" | 1/8" | 5 | 80 | 63,000 | -40 | 240 | Extended | R155-2Z | 57155K15 | 0000 | ||
Oil-Embedded Sleeve Bearings
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For Shaft Dia. | For Housing ID | Lg. | Dynamic Radial Load Cap. @ Speed | Base Oil | Temp. Range, ° F | Each | |||
|---|---|---|---|---|---|---|---|---|---|
841 Bearing Bronze | |||||||||
| 5/32" | 7/32" | 1/4" | 75 lb. @ 120 rpm | Synthetic Oil | -35 to 300 | 6391K615 | 00000 | ||
| 5/32" | 1/4" | 1/4" | 75 lb. @ 120 rpm | Synthetic Oil | -35 to 300 | 6391K927 | 0000 | ||
| 5/32" | 1/4" | 5/16" | 95 lb. @ 120 rpm | Synthetic Oil | -35 to 300 | 6391K928 | 0000 | ||
| 5/32" | 1/4" | 3/8" | 115 lb. @ 120 rpm | Synthetic Oil | -35 to 300 | 6391K485 | 0000 | ||
Needle-Roller Bearings
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Also known as drawn-cup roller bearings, these are our thinnest roller bearings. The outer ring is drawn out to form a lip that holds the bearing together. Bearings take on the shape of their housing and may be oblong prior to installation.
Open Bearing—Open bearings dissipate heat more efficiently than sealed bearings.
Radial Load Cap., lb. | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | For Housing ID | Wd. | Dynamic | Static | Max. Rotation Speed, rpm | Lubrication | For Shaft Surface Smoothness, Ra, μin | Temp. Range, ° F | Specs. Met | Each | |||
For Radial Load—Open with Steel Ring | |||||||||||||
| 5/32" | 9/32" | 1/4" | 280 | 210 | 44,000 | Required | 8 | -20 to 280 | ISO 281, ISO 76 | 5905K491 | 000000 | ||
Oil-Embedded Flanged Sleeve Bearings
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For Shaft Dia. | For Housing ID | Lg. | Flange OD | Flange Thk. | Dynamic Radial Load Cap. @ Speed | Dynamic Thrust Load Cap. @ Speed | Base Oil | Temp. Range, ° F | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
841 Bearing Bronze | ||||||||||||
| 5/32" | 1/4" | 3/8" | 3/8" | 1/16" | 115 lb. @ 120 rpm | 180 lb. @ 120 rpm | Synthetic Oil | -35 to 300 | 6338K325 | 000000 | ||
Flanged Ball Bearings
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Open |
 |
Shielded |
Install these bearings inside a housing and they won't budge. The flange presses against the housing wall, so vibration and other sudden forces parallel to the shaft (thrust loads) won't knock them off-kilter.
Open—With no rubber seal to block airflow, these bearings dissipate heat quickly, extending the life of the lubricant and reducing friction over time.
Shielded—The balls are covered just enough to keep out large particles while allowing air to pass through and dissipate heat.
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.
Extended Inner Ring—Connect to mating parts without the need for a spacer. The inner ring juts out farther than the outer ring, so shaft collars and other objects won't touch the bearing's moving parts.
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.
Flange | Temp. Range, ° F | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | For Housing ID | Wd. | OD | Thk. | 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 | |||||||||||||||
| 5/32" | 5/16" | 7/64" | 0.359" | 0.02" | 5 | 80 | 63,000 | -65 | 250 | Standard | R155 | 57155K208 | 00000 | ||
Shielded | |||||||||||||||
Corrosion-Resistant 440C Stainless Steel | |||||||||||||||
| 5/32" | 5/16" | 1/8" | 0.359" | 0.04" | 5 | 80 | 63,000 | -65 | 250 | Standard | R155-2Z | 57155K317 | 0000 | ||
| 5/32" | 5/16" | 1/8" | 0.359" | 0.04" | 5 | 80 | 63,000 | -65 | 250 | Extended | R155-2Z | 57155K2 | 00000 | ||
Flanged Sleeve Bearings
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These bearings don’t come with a lubricant, so you can select the oil that meets the needs of your application. You’ll need to refill the oil, so make sure the bearing is located where you can access it. All are fabricated and inspected in the U.S.
Flanged sleeve bearings combine a sleeve and thrust bearing in one. The flange supports thrust loads and prevents the bearing from being pushed out of place. The sleeve is the simplest way to support the load of a rotating shaft while reducing friction. Also known as plain bearings.
High-Load 932 Bearing Bronze—These bearings are strong enough for sudden starts and stops, plus they resist wear and tear. They are cast from an alloy of leaded tin bronze for uniform rigidity and strength. Also known as 660 leaded bronze bearings.
For Shaft Dia. | For Housing ID | Lg. | Flange OD | Flange Thk. | Dynamic Radial Load Cap. @ Speed | Dynamic Thrust Load Cap. @ Speed | Temp. Range, ° F | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
High-Load 932 Bearing Bronze | |||||||||||
| 5/32" | 1/4" | 3/8" | 3/8" | 1/16" | 230 lb. @ 120 rpm | 360 lb. @ 120 rpm | -350 to 450 | 7815K804 | 000000 | ||
| 5/32" | 5/16" | 1/4" | 7/16" | 1/16" | 155 lb. @ 120 rpm | 520 lb. @ 120 rpm | -350 to 450 | 7815K805 | 00000 | ||
| 5/32" | 5/16" | 3/8" | 7/16" | 1/16" | 230 lb. @ 120 rpm | 520 lb. @ 120 rpm | -350 to 450 | 7815K806 | 00000 | ||
| 5/32" | 3/8" | 3/8" | 7/16" | 1/16" | 230 lb. @ 120 rpm | 520 lb. @ 120 rpm | -350 to 450 | 7815K807 | 00000 | ||
High-Precision Ball Bearings
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Open |
 |
Shielded |
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.
Shielded—The balls are covered just enough to keep out large particles while allowing air to pass through and dissipate heat.
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 | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | |||||||||||||
| 5/32" | 5/16" | 7/64" | 7 | 55 | 68,000 | -10 | 240 | Standard | R155 | 3826T11 | 000000 | ||
Shielded | |||||||||||||
Corrosion-Resistant 440C Stainless Steel | |||||||||||||
| 5/32" | 5/16" | 1/8" | 7 | 40 | 20,000 | -10 | 240 | Standard | R155-2Z | 3759T52 | 00000 | ||
Mounted Ball Bearings
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Smoother than smooth—the balls inside these bearings roll nearly friction-free. The sturdy housing bolts down to support shafts as they turn.
Lubricate regularly to keep your bearing in tip-top shape. Bearings with seals and shields keep lubricants in and contaminants out, and come packed with grease. Open bearings require initial lubrication and offer less protection against dust and debris.
Aluminum Housing—One-third the weight of cast iron but not as strong. Aluminum also resists corrosion.
Press Fit—For a tight connection to the shaft, install with a press or by heating and then cooling the bearing. Also known as an interference fit.
Overall | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | Ctr. Ht. | Lg. | Wd. | Dynamic Radial Load Cap., lb. | Max. Rotation Speed, rpm | Bearing Material | Bearing Seal Type | Manufacturer | Each | |||
Aluminum Housing | ||||||||||||
Press Fit | ||||||||||||
| 5/32" | 3/8" | 1 29/64" | 13/64" | 65 | 26,500 | 440C Stainless Steel | Sealed | McMaster-Carr Approved | 4491N12 | 000000 | ||
| 5/32" | 3/8" | 1 29/64" | 13/64" | 65 | 53,000 | 440C Stainless Steel | Shielded | McMaster-Carr Approved | 8600N102 | 00000 | ||
High-Precision Flanged Ball Bearings
 |
Open |
 |
Shielded |
Our most precise flanged ball bearings, 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). Choose them for high-speed equipment that requires pinpoint accuracy, such as gyroscopes. Their flange presses against the housing wall, so vibration and other sudden forces parallel to the shaft (thrust loads) won't knock them off-kilter.
Open—With no rubber seal to block airflow, these bearings dissipate heat quickly, extending the life of the lubricant and reducing friction over time.
Shielded—The balls are covered just enough to keep out large particles while allowing air to pass through and dissipate heat.
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.
Flange | Temp. Range, ° F | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | For Housing ID | Wd. | OD | Thk. | 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 | |||||||||||||||
| 5/32" | 5/16" | 7/64" | 0.359" | 0.02" | 7 | 55 | 68,000 | -10 | 240 | Standard | R155 | 4259T9 | 000000 | ||
Shielded | |||||||||||||||
Corrosion-Resistant 440C Stainless Steel | |||||||||||||||
| 5/32" | 5/16" | 1/8" | 0.359" | 0.04" | 7 | 40 | 20,000 | -60 | 250 | Standard | R155-2Z | 4262T31 | 00000 | ||
