About Ball and Roller Bearings
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Ball Bearings
Shielded bearings block out dust and other contaminants, but do not dissipate heat as efficiently as open bearings.
Sealed bearings block out dust and other contaminants better than open and shielded bearings, but retain the most heat.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Specifications Met | Each | |
6008-2Z | 40mm | 68mm | 15mm | Steel | 4,000 | 2,550 | 12,000 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 000000 |
Radial Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Specifications Met | Each | |
6008-2RS | 40mm | 68mm | 15mm | Steel | 4,000 | 2,550 | 5,400 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 000000 |
Permanently Lubricated Ball Bearings
A solid polymer lubricant surrounds the balls, eliminating the need for additional lubrication. Because it's solid, the lubricant blocks out water and dust, extending the life of the bearing.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Sealed | ||||||||||||
6008-2RS | 40mm | 68mm | 15mm | Steel | 3,200 | 2,050 | 5,550 | Lubricated | 10° to 200° | ABEC-1 | 00000000 | 000000 |
Precision Ball Bearings
For greater accuracy and higher speeds, these bearings are made to tighter tolerances than standard ball bearings.
Shielded bearings dissipate heat more efficiently than sealed bearings.
Sealed bearings block out dust and other contaminants better than shielded bearings.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Shielded | ||||||||||||
6008-2Z | 40 | 68 | 15 | Steel | 4,000 | 2,450 | 11,000 | Lubricated | -20° to 230° | ABEC-3 | 0000000 | 000000 |
Sealed | ||||||||||||
6008-2RS | 40 | 68 | 15 | Steel | 4,000 | 2,450 | 7,000 | Lubricated | -30° to 210° | ABEC-3 | 0000000 | 00000 |
Electrically Insulated Ball Bearings
Good for use in electric motors and power generators, these bearings have ceramic balls that insulate against stray current to prevent damage to the bearing. The ceramic balls generate less heat than steel balls, so they require lubrication less frequently.
Sealed bearings block out dust and other contaminants better than open and shielded bearings but retain the most heat.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Sealed | ||||||||||||
6008-2RZ | 40 | 68 | 15 | Steel | 4,000 | 2,450 | 12,000 | Lubricated | -40° to 210° | ABEC-1 | 0000000 | 0000000 |
Stainless Steel Ball Bearings
Bearings are 440C stainless steel for good corrosion resistance.
Open bearings dissipate heat more efficiently than shielded and sealed bearings.
Shielded bearings block out dust and other contaminants, but do not dissipate heat as efficiently as open bearings.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
6008 | 40mm | 68mm | 15mm | 440C Stainless Steel | 3,200 | 2,050 | 12,000 | Lubricated | -40° to 240° | ABEC-1 | 00000000 | 0000000 |
Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
6008-2Z | 40mm | 68mm | 15mm | 440C Stainless Steel | 3,200 | 2,050 | 10,000 | Lubricated | -40° to 240° | ABEC-1 | 00000000 | 0000000 |
Permanently Lubricated Stainless Steel Ball Bearings
A solid polymer lubricant surrounds the balls, eliminating the need for additional lubrication. The solid lubricant blocks out water and dust, extending the life of the bearing.
Sealed bearings have even better resistance to dust and contaminants than open bearings.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Open | ||||||||||||
6008 | 40 | 68 | 15 | 440C Stainless Steel | 2,900 | 2,200 | 5,000 | Lubricated | -10° to 200° | ABEC-1 | 00000000 | 0000000 |
6909 | 45 | 68 | 12 | 440C Stainless Steel | 3,150 | 2,400 | 5,000 | Lubricated | -10° to 200° | ABEC-1 | 00000000 | 000000 |
Sealed | ||||||||||||
6008-2RS | 40 | 68 | 15 | 440C Stainless Steel | 2,900 | 2,200 | 5,000 | Lubricated | -10° to 200° | ABEC-1 | 00000000 | 000000 |
6909-2RS | 45 | 68 | 12 | 440C Stainless Steel | 3,150 | 2,400 | 5,000 | Lubricated | -10° to 200° | ABEC-1 | 00000000 | 000000 |
Food Industry Permanently Lubricated Stainless Steel Ball Bearings
Good for applications with incidental food contact, these 440C stainless steel bearings have a food-grade, solid polymer lubricant between the balls and ring that eliminates the need for additional lubrication. The solid lubricant blocks out water and dust, extending the life of the bearing.
Sealed bearings have even better resistance to dust and contaminants than open bearings.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Specifications Met | Each | |
Sealed | |||||||||||||
6008-2RS | 40 | 68 | 15 | 440C Stainless Steel | 3,200 | 2,050 | 5,000 | Lubricated | -40° to 200° | ABEC-1 | FDA Compliant 21 CFR 178.3570 | 00000000 | 0000000 |
6909-2RS | 45 | 68 | 12 | 440C Stainless Steel | 2,650 | 1,950 | 5,000 | Lubricated | -40° to 200° | ABEC-1 | FDA Compliant 21 CFR 178.3570 | 00000000 | 000000 |
Ultra-Thin Ball Bearings
These bearings have twice as many contact points as angular-contact ball bearings. Fit onto large-diameter hollow shafts to run air and hydraulic lines, electrical wiring, and other components through moving parts in assemblies such as index and rotary tables, packaging equipment, and robotics.
Shielded bearings block out dust and other contaminants, but do not dissipate heat as efficiently as open bearings.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | Thrust Load Cap., lbs. | Moment Load Cap., ft.-lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | For Housing ID | Wd. | Dynamic | Static | Dynamic | Static | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Steel Ring | ||||||||||||||
Shielded | ||||||||||||||
45mm | 68mm | 12mm | 3,150 | 2,400 | Not Rated | Not Rated | Not Rated | Not Rated | 9,700 | Lubricated | -40° to 150° | ABEC-1 | 00000000 | 000000 |
Angular-Contact Thrust Ball Bearings
Install these bearings for use with combined radial and thrust loads. They are often used in spindle applications and can be combined with cylindrical roller bearings to better handle radial loads.
Single-row bearings handle thrust loads on one side. For applications with thrust loads on both sides, mount them in pairs.
Open bearings dissipate heat more efficiently than shielded and sealed bearings.
For technical drawings and 3-D models, click on a part number.
Combined Load Cap., lbs. | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Contact Angle | Temp. Range, °F | ABEC Rating | Specifications Met | Each | |
Single Row | ||||||||||||||
Open | ||||||||||||||
7008 | 40 | 68 | 15 | Steel | 4,800 | 3,800 | 21,700 | Required | 15° | -40° to 250° | ABEC-5 | DIN 628-1 | 00000000 | 0000000 |
High-Speed Angular-Contact Thrust Ball Bearings
An ABEC-7 rating means these bearings are made to some of the tightest tolerances, so they operate at the highest speeds.
Open bearings dissipate heat more efficiently than sealed bearings.
Sealed bearings block out dust and other contaminants better than open bearings, but retain the most heat.
For technical drawings and 3-D models, click on a part number.
Combined Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Contact Angle | Temp. Range, °F | ABEC Rating | Each | |
Single Row | |||||||||||||
Open | |||||||||||||
7008 | 40 | 68 | 15 | Steel | 3,750 | 2,450 | 20,000 | Required | 15° | -30° to 140° | ABEC-7 | 0000000 | 0000000 |
Sealed | |||||||||||||
7008 | 40 | 68 | 15 | Steel | 4,850 | 3,550 | 21,300 | Lubricated | 15° | 0° to 230° | ABEC-7 | 0000000 | 000000 |
Tapered-Roller Bearings
Found anywhere from machine tool spindles to conveyor rollers, these bearings have a two-piece design that allows for adjustment.
For technical drawings and 3-D models, click on a part number.
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 | ||||||||||||
40mm | 68mm | 14.5mm | 32008 | 3,000 | 16,100 | 1,900 | 17,700 | 2,700 | Required | -60° to 200° | 0000000 | 000000 |
40mm | 68mm | 14.5mm | 32008 | 10,550 | 15,100 | 6,650 | Not Rated | 5,300 | Required | -50° to 300° | 0000000 | 00000 |
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.
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 | ||||||||||||
60mm | 68mm | 12mm | Steel | 3,900 | 7,150 | 4,450 | Required | 8 | -20° to 280° | DIN 618, ISO 3245 | 00000000 | 000000 |
60mm | 68mm | 20mm | Steel | 7,500 | 16,850 | 4,450 | Required | 8 | -20° to 280° | DIN 618, ISO 3245 | 00000000 | 00000 |
60mm | 68mm | 32mm | Steel | 11,900 | 30,300 | 4,450 | Required | 8 | -20° to 280° | DIN 618, ISO 3245 | 00000000 | 00000 |