About Ball and Roller Bearings
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Selecting Compatible Lead Screws and Nuts
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Set Screw Collar Ball Bearings
Slip these bearings onto a shaft and secure with the included set screws, no special tools required. All have an extended inner ring for additional shaft support.
Bearings with a black-oxide steel ring have some corrosion resistance.
Sealed bearings block out dust and other contaminants better than shielded bearings.
Bearings with a retaining ring have a removable retaining ring that holds the bearing inside a housing.
For technical drawings and 3-D models, click on a part number.
Inner Ring | Retaining Ring | Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | OD | Wd. | OD | Thick. | Dynamic | Static | Max. Speed, rpm | Temp. Range, °F | ABEC Rating | Each | |
Sealed (Lubricated) | ||||||||||||||
Black-Oxide Steel—With Retaining Ring | ||||||||||||||
ER17 | 1 1/16" | 2.441" | 7/8" | 1.5938" | 1.5" | 2 21/32" | 0.0625" | 4,350 | 2,550 | 5,450 | -20° to 220° | ABEC-1 | 0000000 | 0000000 |
ER18 | 1 1/8" | 2.441" | 7/8" | 1.5781" | 1.54688" | 2 41/64" | 0.0625" | 4,850 | 2,530 | 6,100 | -65° to 250° | ABEC-1 | 0000000 | 00000 |
ER19 | 1 3/16" | 2.4409" | 7/8" | 1.568" | 1.5" | 2.656" | 0.062" | 4,350 | 2,500 | 5,000 | -20° to 250° | Not Rated | 0000000 | 00000 |
Clamp-On Collar Ball Bearings
Quickly secure these bearings onto shafts with the clamp-on collar for a concentric, mar-free hold. Tighten the single screw on the locking collar around its inner ring on your shaft to center and secure the shaft in the bearing bore. The collar’s firm grip reduces vibration and noise in your system. The steel rings on these bearings have a black-oxide finish for some corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Inner Ring | Retaining Ring | Radial Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | OD | Wd. | OD | Thick. | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Sealed | |||||||||||||||
Black-Oxide Steel Ring | |||||||||||||||
ER20 | 1 1/4" | 2 7/16" | 7/8" | 1.59375" | 1.5" | 2.656" | 0.063" | 4,350 | 2,550 | 7,600 | Lubricated | -20° to 220° | ABEC-1 | 0000000 | 0000000 |
Washdown Set Screw Collar Ball Bearings
Secure these bearings in washdown areas, such as food, beverage, pharmaceutical, and chemical plants, by tightening the set screw onto a shaft—no additional collar needed. Similar to 304 stainless steel, the nickel-coated steel rings on these bearings won’t break down from water. The extended inner ring increases shaft support. All of these bearings have NSF registered H1 lubrication, which is certified for incidental contact with food.
For technical drawings and 3-D models, click on a part number.
Inner Ring | Retaining Ring | Radial Load Cap., lbs. | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | For Housing ID | Wd. | OD | Wd. | OD | Thick. | Seal Type | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Environmental Rating | Each | |
Nickel-Coated Steel Ring | ||||||||||||||||
1 1/4" | 2.441" | 7/8" | 2.15625" | 1.5" | 2.65625" | 0.0625" | Sealed | 4,350 | 2,550 | 2,000 | Lubricated | -20 to 220 | ABEC-1 | IP69K | 0000000 | 0000000 |
Washdown Clamp-On Collar Ball Bearings
Designed to stand up to frequent washdowns, you can quickly secure these ball bearings onto shafts with the clamp-on collar in food, beverage, pharmaceutical, and chemical plants. The collar centers your shafts and secures them better than set screw ball bearings, which reduces vibration and noise. To install these bearings, tighten the single screw on the collar around its inner ring on your shaft for a mar-free hold.
Coated with nickel, the steel rings on these bearings won’t corrode from water and harsh cleaners, similar to 304 stainless steel. The inner ring is extended for added shaft support. All of these bearings have NSF registered H1 lubrication, which is certified for incidental contact with food and is suitable for food and beverage applications.
For technical drawings and 3-D models, click on a part number.
Inner Ring | Retaining Ring | Radial Load Capacity, lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | For Housing ID | Wd. | OD | OD Tolerance | Wd. | OD | Thick. | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Sealed | |||||||||||||||
Nickel-Coated Steel Ring | |||||||||||||||
1 3/16" | 2.441" | 7/8" | 2.15625" | Not Rated | 1.5625" | 2.65625" | 0.0625" | 4,350 | 2,550 | 2,300 | Lubricated | -20° to 220° | ABEC-1 | 0000000 | 0000000 |
Tapered-Roller Bearings
Found anywhere from machine tool spindles to conveyor rollers, these bearings have a two-piece design that allows for adjustment.
Radial Load Cap., lbs. | Thrust Load Cap., lbs. | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | For Housing ID | Wd. | Bearing Trade Number | Dynamic | Static | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | Each | |
Steel Ring | ||||||||||||
Open | ||||||||||||
3" | 5" | 7/8" | 42687/42620 | 8,650 | 49,800 | 6,200 | 60,800 | 1,500 | Required | -60° to 200° | 00000000 | 0000000 |
Needle-Roller Bearings
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 bearings dissipate heat more efficiently than sealed bearings.
Sealed bearings block out dust better than open bearings, but retain more heat.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | For Shaft Surface Smoothness (Ra), microinch | Temp. Range, °F | Specifications Met | Each | |
Open | ||||||||||||
1 1/2" | 1 7/8" | 7/8" | Steel | 8,100 | 13,500 | 6,700 | Required | 8 | -20° to 280° | DIN 281, ISO 76 | 00000000 | 000000 |
Sealed—One Side | ||||||||||||
1" | 1 1/4" | 7/8" | Steel | 4,050 | 6,400 | 6,100 | Lubricated | 8 | -20° to 210° | __ | 00000000 | 00000 |
1 1/2" | 1 7/8" | 7/8" | Steel | 8,100 | 13,500 | 6,700 | Lubricated | 8 | -20° to 210° | __ | 00000000 | 00000 |
One-Way Locking Needle-Roller Bearing Clutches
The needles in these bearings roll freely in one direction, but lock to transmit torque when the rotation of the shaft is reversed. Also known as drawn-cup roller clutches. An arrow on the lip indicates the rotational direction that locks the bearings.
Triple-row bearings support radial loads.
Bearings with 301 stainless steel springs handle higher temperatures than bearings with acetal springs.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Max. Torque, ft.-lbs. | Lubrication | For Shaft Surface Smoothness (Ra), microinch | Temp. Range, °F | Each | |
Triple Row | ||||||||||||
301 Stainless Steel Springs | ||||||||||||
3/8" | 5/8" | 7/8" | Steel | 1,350 | 1,100 | 18,000 | 4 | Required | 16 | -20° to 250° | 0000000 | 000000 |
1/2" | 3/4" | 7/8" | Steel | 1,600 | 1,450 | 17,000 | 6.5 | Required | 16 | -20° to 250° | 0000000 | 00000 |
Acme Lead Screws and Nuts
Found in hand-powered clamps, vises, grates, doors, and work tables, lead screws and nuts have broad, square threads that are well suited for quick assembly, high clamping forces, and lifting and lowering heavy objects. To ensure compatibility, please select components that have the same thread direction, thread size, and number of thread starts.
Carbon steel components are easier to machine than alloy steel components. Zinc-plated carbon steel components have mild corrosion resistance. 360 brass components have excellent machinability and good corrosion resistance. 18-8 stainless steel components have good corrosion resistance.
Travel distance per turn, also known as screw lead, is the distance a nut or handle moves with one revolution of the lead screw.
For technical drawings and 3-D models, click on a part number.
Coupling nuts connect two lead screws.
Thread Size | Ht. | Wd. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Each | |
Carbon Steel | |||||||||
---|---|---|---|---|---|---|---|---|---|
5/8"-8 | 2 1/8" | 7/8" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B75 | 000000000 | 000000 |
Hex nuts fasten and position lead screw components.
Thread Size | Ht. | Wd. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Specifications Met | Each | |
Carbon Steel | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
1/2"-8 | 31/64" | 7/8" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
1/2"-10 | 31/64" | 7/8" | 1 | 1:1 | 0.1" | Class 2G | Rockwell B75 | __ | 000000000 | 0000 |
Zinc-Plated Carbon Steel | ||||||||||
1/2"-8 | 31/64" | 7/8" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
1/2"-10 | 1/2" | 7/8" | 1 | 1:1 | 0.1" | Class 2G | Rockwell B75 | __ | 000000000 | 00000 |
360 Brass | ||||||||||
1/2"-10 | 1/2" | 7/8" | 1 | 1:1 | 0.1" | Class 2G | Rockwell B75 | ASTM B16 | 000000000 | 0000 |
18-8 Stainless Steel | ||||||||||
1/2"-8 | 31/64" | 7/8" | 1 | 1:1 | 0.125" | Class 2G | Rockwell B97 | __ | 000000000 | 00000 |
1/2"-10 | 31/64" | 7/8" | 1 | 1:1 | 0.1" | Class 2G | Not Rated | __ | 000000000 | 00000 |
Hex nuts fasten and position lead screw components.
Thread Size | Ht. | Wd. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Fastener Strength Grade/Class | Hardness | Specifications Met | Each | |
Carbon Steel | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
1/2"-8 | 31/64" | 7/8" | 1 | 1:1 | 0.125" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 00000 |
1/2"-10 | 31/64" | 7/8" | 1 | 1:1 | 0.1" | Class 2G | Grade 2 | Rockwell B85 | __ | 000000000 | 0000 |
Zinc-Plated Carbon Steel | |||||||||||
1/2"-10 | 1/2" | 7/8" | 1 | 1:1 | 0.1" | Class 2G | __ | Rockwell B75 | __ | 000000000 | 00000 |
360 Brass | |||||||||||
1/2"-10 | 1/2" | 7/8" | 1 | 1:1 | 0.1" | Class 2G | __ | Rockwell B75 | ASTM B16 | 000000000 | 0000 |
18-8 Stainless Steel | |||||||||||
1/2"-8 | 31/64" | 7/8" | 1 | 1:1 | 0.125" | Class 2G | __ | Rockwell B97 | __ | 000000000 | 00000 |
1/2"-10 | 31/64" | 7/8" | 1 | 1:1 | 0.1" | Class 2G | __ | Not Rated | __ | 000000000 | 00000 |
Square nuts fasten and position lead screw components. Square nuts have large sides, which make them easier to grip with a wrench than hex nuts and keep them from rotating in channels and square holes.
Thread Size | Ht. | Wd. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Specifications Met | Each | |
360 Brass | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
1/2"-10 | 1/2" | 7/8" | 1 | 1:1 | 0.1" | Class 2G | Rockwell B55 | ASTM B16 | 000000000 | 00000 |
Square nuts fasten and position lead screw components. Square nuts have large sides, which make them easier to grip with a wrench than hex nuts and keep them from rotating in channels and square holes.
Thread Size | Ht. | Wd. | No. of Thread Starts | Speed Ratio | Travel Distance per Turn | Thread Fit | Hardness | Specifications Met | Each | |
360 Brass | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
1/2"-10 | 1/2" | 7/8" | 1 | 1:1 | 0.1" | Class 2G | Rockwell B55 | ASTM B16 | 000000000 | 000000 |