About Shaft Collars
Shaft collars are useful for holding and positioning components on a shaft. They can also serve as mechanical stops and stroke limiters.
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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 |
Thrust Ball Bearings
Steel balls and washers allow these bearings to handle higher loads than bearings with stainless steel components. With an open design, they dissipate heat more efficiently than one-piece thrust ball bearings.
Bearings with steel cage and with bronze cage handle higher loads and speeds than bearings with a plastic cage.
For technical drawings and 3-D models, click on a part number.
Thrust Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | OD | Thick. | Cage Material | Washer Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | Includes | Each | |
Open | ||||||||||||
40mm | 68mm | 19mm | Steel | Steel | 10,500 | 22,100 | 3,900 | Required | -40° to 250° | Two Washers | 00000000 | 000000 |
45mm | 68mm | 16mm | Steel | Steel | 6,500 | 14,600 | 3,600 | Required | -40° to 240° | Two Washers | 0000000 | 00000 |
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 |
Ring Shims
Precisely align, level, and adjust spacing on fasteners, shafts, and machinery with these shims.
For accurate leveling, choose materials such as steel or stainless steel, which are hard enough to resist scratching and deforming. Softer shims, like copper or aluminum, can be used as wear plates between components that rub together, preventing damage to equipment.
Carbon steel shims have excellent strength and can be welded, but aren't as corrosion resistant as other shims.
Spring steel shims are comparable in strength to carbon steel shims, but are harder and hold their shape better. They aren't as corrosion resistant as other shims.
For technical drawings and 3-D models, click on a part number.
ID | ID Tolerance | OD | OD Tolerance | Material | Min. Hardness | Pkg. Qty. | Pkg. | |
2 mm Thick. (-0.21 mm to 0.21 mm Tolerance) | ||||||||
---|---|---|---|---|---|---|---|---|
55mm | -0.3mm to 0.3mm | 68mm | -0.5mm to 0.5mm | Carbon Steel | Rockwell B40 | 5 | 00000000 | 000000 |
ID | ID Tolerance | OD | OD Tolerance | Material | Min. Hardness | Pkg. Qty. | Pkg. | |
0.1 mm Thick. (-0.013 mm to 0.013 mm Tolerance) | ||||||||
---|---|---|---|---|---|---|---|---|
55mm | -0.3mm to 0.3mm | 68mm | -0.5mm to 0.5mm | 1008-1010 Carbon Steel | Rockwell B40 | 1 | 00000000 | 000000 |
0.2 mm Thick. (-0.045 mm to 0.045 mm Tolerance) | ||||||||
55mm | -0.3mm to 0.3mm | 68mm | -0.5mm to 0.5mm | 1008-1010 Carbon Steel | Rockwell B40 | 1 | 00000000 | 00000 |
0.3 mm Thick. (-0.072 mm to 0.072 mm Tolerance) | ||||||||
55mm | -0.3mm to 0.3mm | 68mm | -0.5mm to 0.5mm | 1008-1010 Carbon Steel | Rockwell B40 | 1 | 00000000 | 00000 |
0.5 mm Thick. (-0.064 mm to 0.064 mm Tolerance) | ||||||||
55mm | -0.3mm to 0.3mm | 68mm | -0.5mm to 0.5mm | 1008-1010 Carbon Steel | Rockwell B40 | 10 | 00000000 | 0000 |
1 mm Thick. (-0.105 mm to 0.105 mm Tolerance) | ||||||||
55mm | -0.3mm to 0.3mm | 68mm | -0.5mm to 0.5mm | 1008-1010 Carbon Steel | Rockwell B40 | 10 | 00000000 | 00000 |
1.5 mm Thick. (-0.14 mm to 0.14 mm Tolerance) | ||||||||
55mm | -0.3mm to 0.3mm | 68mm | -0.5mm to 0.5mm | 1008-1010 Carbon Steel | Rockwell B40 | 5 | 00000000 | 00000 |
ID | ID Tolerance | OD | OD Tolerance | Material | Min. Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
0.2 mm Thick. (-0.04 mm to 0 mm Tolerance) | |||||||||
---|---|---|---|---|---|---|---|---|---|
55mm | 0.03mm to 0.4mm | 68mm | -0.47mm to -0.04mm | 1074-1095 Spring Steel | Rockwell B85 | DIN 988 | 5 | 000000000 | 00000 |
0.3 mm Thick. (-0.05 mm to 0 mm Tolerance) | |||||||||
55mm | 0.03mm to 0.4mm | 68mm | -0.47mm to -0.04mm | 1074-1095 Spring Steel | Rockwell B85 | DIN 988 | 5 | 000000000 | 0000 |
0.5 mm Thick. (-0.05 mm to 0 mm Tolerance) | |||||||||
55mm | 0.03mm to 0.4mm | 68mm | -0.47mm to -0.04mm | 1074-1095 Spring Steel | Rockwell B85 | DIN 988 | 5 | 000000000 | 0000 |
1 mm Thick. (-0.05 mm to 0 mm Tolerance) | |||||||||
55mm | 0.03mm to 0.4mm | 68mm | -0.47mm to -0.04mm | 1074-1095 Spring Steel | Rockwell B85 | DIN 988 | 5 | 000000000 | 0000 |
Bearing Retaining Locknuts
With a nylon insert that grips your threaded shaft or spindle without damaging its threads, these locknuts—also called shaft nuts—hold bearings, bushings, gears, and pulleys prone to vibration tightly in place. They come as one piece, so you can easily clamp them onto your shaft or spindle. But, since they aren’t made entirely of metal, they don’t stand up to heat as well as all-metal locknuts. Slots in their sides mean you can tighten and loosen them with a spanner wrench or spanner socket. Their face is also chamfered to help keep the size and weight of your assembly at a minimum. All meet international standards for bearing locknut dimensions.
When choosing your thread spacing, consider the precision of your application. The finer the threads, the more control you have when making adjustments.
All carbon steel locknuts are strong and resist wear, though they don’t stand up to corrosion as well as stainless steel locknuts. Zinc-plated steel locknuts resist rusting from some moisture, but you shouldn’t use them with salt water or chemicals.
For technical drawings and 3-D models, click on a part number.
Thread | Zinc-Plated Carbon Steel | ||||||
---|---|---|---|---|---|---|---|
Size | Pitch, mm | Spacing | OD | Wd., mm | Insert Max. Temp., °F | Each | |
Chamfered Face | |||||||
M50 | 1.5 | Extra Fine | 68mm | 13 | 210° | 0000000 | 000000 |
Bearing Retaining Nuts
Often paired with spring lock washers to strengthen their hold, these retaining nuts—also known as shaft nuts—keep vibration from shifting bearings, bushings, pulleys, and gears on your threaded shaft or spindle. They have slotted sides, so you can tighten and loosen them with a spanner wrench or spanner socket.
Use stepped-face retaining nuts with DIN 462 spring lock washers. You can also use them in pairs or with other bearing retaining nuts as jam nuts. For the nut closer to the bearing, position the stepped face towards the bearing. All meet DIN standards for bearing lockout dimensions.
Carbon steel retaining nuts are strong and resist wear.
For technical drawings and 3-D models, click on a part number.
Bearing Retaining Jam Nuts
Used in pairs or with another bearing retaining nut, these jam nuts—often called shaft nuts—hold bearings, bushings, pulleys, and gears in place on your threaded shaft or spindle. Threading two nuts tightly against each other makes it harder for vibration to loosen your assembly than if you used only one nut. For the nut closer to the bearing, position the stepped face towards the bearing. These jam nuts have holes on the side, so you can tighten and loosen them with a pin spanner wrench. Made of carbon steel, they’re strong and wear resistant. All meet DIN 1816, an international standard for bearing locknut dimensions.
For technical drawings and 3-D models, click on a part number.
Thread | |||||||
---|---|---|---|---|---|---|---|
Size | Pitch, mm | Spacing | OD, mm | Wd., mm | Specifications Met | Each | |
Carbon Steel | |||||||
Stepped Face | |||||||
M45 | 1.5 | Extra Fine | 68 | 12 | DIN 1816 | 0000000 | 000000 |