About Ball and Roller Bearings
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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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Ball Bearings
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.
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 | Each | |
6208 | 40mm | 80mm | 18mm | Steel | 5,550 | 3,650 | 8,300 | Lubricated | -20° to 230° | ABEC-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 | |
6011-2Z | 55mm | 90mm | 18mm | Steel | 6,700 | 4,750 | 9,100 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 0000000 |
6012-2Z | 60mm | 95mm | 18mm | Steel | 7,050 | 5,200 | 8,500 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 000000 |
6013-2Z | 65mm | 100mm | 18mm | Steel | 7,300 | 5,600 | 8,100 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 000000 |
6208-2Z | 40mm | 80mm | 18mm | Steel | 6,500 | 4,000 | 8,500 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 00000 |
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 | |
6011-2RS | 55mm | 90mm | 18mm | Steel | 6,700 | 4,750 | 4,100 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 000000 |
6012-2RS | 60mm | 95mm | 18mm | Steel | 7,050 | 5,200 | 3,700 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 000000 |
6013-2RS | 65mm | 100mm | 18mm | Steel | 7,300 | 5,600 | 3,500 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 00000000 | 000000 |
6208-2RS | 40mm | 80mm | 18mm | Steel | 6,500 | 4,000 | 5,000 | Lubricated | -20° to 230° | ABEC-1 | DIN 625-1 | 0000000 | 00000 |
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.
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. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Open | ||||||||||||
6208 | 40mm | 80mm | 18mm | Steel | 5,050 | 5,050 | 5,000 | Lubricated | 10° to 200° | ABEC-1 | 00000000 | 000000 |
Sealed | ||||||||||||
6011-2RS | 55mm | 90mm | 18mm | Steel | 4,900 | 4,100 | 4,000 | Lubricated | 10° to 200° | ABEC-1 | 00000000 | 000000 |
6012-2RS | 60mm | 95mm | 18mm | Steel | 5,100 | 4,400 | 3,700 | Lubricated | 10° to 200° | ABEC-1 | 00000000 | 000000 |
6013-2RS | 65mm | 100mm | 18mm | Steel | 5,300 | 4,750 | 3,500 | Lubricated | 10° to 200° | ABEC-1 | 00000000 | 000000 |
6208-2RS | 40mm | 80mm | 18mm | Steel | 5,050 | 3,650 | 5,000 | Lubricated | 10° to 200° | ABEC-1 | 00000000 | 00000 |
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 | ||||||||||||
6011-2Z | 55 | 90 | 18 | Steel | 6,650 | 4,750 | 8,000 | Lubricated | -20° to 230° | ABEC-3 | 0000000 | 0000000 |
6012-2Z | 60 | 95 | 18 | Steel | 6,900 | 5,200 | 7,500 | Lubricated | -20° to 230° | ABEC-3 | 0000000 | 000000 |
6013-2Z | 65 | 100 | 18 | Steel | 7,150 | 5,600 | 7,000 | Lubricated | -20° to 230° | ABEC-3 | 0000000 | 000000 |
6208-2Z | 40 | 80 | 18 | Steel | 7,300 | 4,250 | 9,000 | Lubricated | -20° to 230° | ABEC-3 | 0000000 | 00000 |
Sealed | ||||||||||||
6011-2RS | 55 | 90 | 18 | Steel | 6,650 | 4,750 | 5,000 | Lubricated | -30° to 210° | ABEC-3 | 0000000 | 000000 |
6012-2RS | 60 | 95 | 18 | Steel | 6,900 | 5,200 | 4,500 | Lubricated | -30° to 210° | ABEC-3 | 0000000 | 000000 |
6013-2RS | 65 | 100 | 18 | Steel | 7,150 | 5,600 | 4,300 | Lubricated | -30° to 210° | ABEC-3 | 0000000 | 000000 |
6208-2RS | 40 | 80 | 18 | Steel | 7,300 | 4,250 | 5,600 | Lubricated | -30° to 210° | ABEC-3 | 00000000 | 00000 |
Self-Aligning Ball Bearings
With a spherical raceway and two rows of balls, these bearings compensate for shaft misalignment.
Open bearings dissipate heat more efficiently than sealed bearings.
Sealed bearings block out dust and other contaminants better than open bearings, but retain more 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 | Misalignment Capability | Temp. Range, °F | ABEC Rating | Each | |
Open | |||||||||||||
1208 | 40 | 80 | 18 | Steel | 4,300 | 1,450 | 7,500 | Required | 4° | Not Rated | ABEC-1 | 00000000 | 000000 |
2204 | 20 | 47 | 18 | Steel | 3,750 | 930 | 20,000 | Lubricated | 2.5° | -30° to 210° | ABEC-1 | 0000000 | 000000 |
2205 | 25 | 52 | 18 | Steel | 3,750 | 980 | 18,000 | Lubricated | 2.5° | -30° to 210° | ABEC-1 | 0000000 | 000000 |
Sealed | |||||||||||||
2204-2RS | 20 | 47 | 18 | Steel | 2,850 | 760 | 10,000 | Lubricated | 1.5° | -30° to 210° | ABEC-1 | 0000000 | 000000 |
2205-2RS | 25 | 52 | 18 | Steel | 3,200 | 890 | 9,000 | Lubricated | 1.5° | -30° to 210° | ABEC-1 | 0000000 | 000000 |
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.
Shielded bearings block out dust and other contaminants.
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 | |
Shielded | ||||||||||||
6208-2Z | 40 | 80 | 18 | Steel | 6,500 | 3,400 | 12,000 | Lubricated | -20° to 250° | ABEC-1 | 0000000 | 0000000 |
Sealed | ||||||||||||
6208-2RZ | 40 | 80 | 18 | Steel | 7,300 | 4,250 | 11,000 | Lubricated | -40° to 210° | ABEC-1 | 0000000 | 00000000 |
Tapered Bore Self-Aligning Ball Bearings
For use on tapered shafts and round shafts with adapter sleeves, these ball-bearings have a spherical raceway to compensate for shaft misalignment.
For technical drawings and 3-D models, click on a part number.
Radial Load Capacity | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Diameter, mm | For Housing ID, mm | Width, mm | Ring Material | Dynamic | Static, lbs. | Maximum Speed, rpm | Lubrication | Misalignment Capability | Maximum Temperature, °F | Rate of Taper | ABEC Rating | Each | |
Open | ||||||||||||||
1208K | 40 | 80 | 18 | Steel | 4,300 | 1,450 | 7,500 | Required | 4° | 240° | 1:12 | ABEC-1 | 0000000 | 000000 |
2205K | 25 | 52 | 18 | Steel | 2,750 | 770 | 12,000 | Required | 4° | 240° | 1:12 | ABEC-1 | 0000000 | 00000 |
Square-Bore Ball Bearings
Mount these bearings onto a square shaft. They have an extended inner ring for additional shaft support. Since they’re sealed, they block out dust and contaminants better than open and shielded bearings.
For technical drawings and 3-D models, click on a part number.
Inner Ring | Radial Load Cap., lbs. | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Wd., mm | Square Wd., mm | For Housing ID, mm | Wd., mm | OD, mm | Wd., mm | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Sealed | |||||||||||||||
W208PP5 | 29.5 | 29.972 | 80 | 18 | 52.6 | 36.5 | Steel | 7,300 | 4,600 | 500 | Lubricated | -20° to 200° | ABEC-1 | 0000000 | 000000 |
W208PP6 | 26 | 26.162 | 80 | 18 | 52.6 | 36.5 | Steel | 7,300 | 4,450 | 500 | Lubricated | -20° to 200° | ABEC-1 | 0000000 | 00000 |
Stainless Steel Ball Bearings
Bearings are 440C stainless steel for good corrosion resistance.
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 | Each | |
6208-2Z | 40mm | 80mm | 18mm | 440C Stainless Steel | 4,000 | 2,900 | 9,100 | 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 | |
6011-2RS | 55mm | 90mm | 18mm | 440C Stainless Steel | 6,350 | 4,850 | 4,200 | Lubricated | -20° to 210° | ABEC-1 | 00000000 | 0000000 |
6012-2RS | 60mm | 95mm | 18mm | 440C Stainless Steel | 6,600 | 5,200 | 4,000 | Lubricated | -20° to 210° | ABEC-1 | 00000000 | 000000 |
6013-2RS | 65mm | 100mm | 18mm | 440C Stainless Steel | 6,850 | 5,660 | 4,000 | Lubricated | -20° to 210° | ABEC-1 | 00000000 | 000000 |
6208-2RS | 40mm | 80mm | 18mm | 440C Stainless Steel | 6,500 | 4,000 | 5,200 | Lubricated | -20° to 210° | ABEC-1 | 00000000 | 000000 |
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 | ||||||||||||
6208 | 40 | 80 | 18 | 440C Stainless Steel | 5,050 | 3,650 | 5,000 | Lubricated | -10° to 200° | ABEC-1 | 00000000 | 0000000 |
Sealed | ||||||||||||
6208-2RS | 40 | 80 | 18 | 440C Stainless Steel | 5,050 | 3,650 | 5,000 | Lubricated | -10° to 200° | ABEC-1 | 00000000 | 000000 |
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.
Sealed bearings block out dust and other contaminants better than shielded bearings.
Flanged bearings have a flange that ensures proper positioning inside a tube or housing.
For technical drawings and 3-D models, click on a part number.
Inner Ring | Radial Load Cap., lbs. | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | OD | Wd. | Dynamic | Static | Max. Speed, rpm | Temp. Range, °F | ABEC Rating | Each | |
Sealed (Lubricated) | ||||||||||||
Steel—Flanged | ||||||||||||
GYAE30RRB | 30mm | 62mm | 18mm | 40.1mm | 32.5mm | 4,900 | 2,500 | 5,800 | -65° to 250° | ABEC-1 | 0000000 | 000000 |
High-Temperature Ball Bearings
Made with either PEEK or graphite, these ball bearings work in applications that are too hot for most other ball bearings.
Bearings with a graphite cage handle temperatures up to 660° F, double that of PEEK ball bearings, so they're a good choice for use in industrial ovens. However, they’re only for low-speed applications.
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 | |
Shielded | ||||||||||||
Graphite Cage—Steel Ball | ||||||||||||
6208-2Z | 40mm | 80mm | 18mm | Steel | 7,300 | 4,250 | 150 | Lubricated | -70° to 660° | ABEC-1 | 0000000 | 0000000 |
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.
Open bearings dissipate heat more efficiently than shielded 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 | ||||||||||||||
Open | ||||||||||||||
85mm | 120mm | 18mm | 7,150 | 6,650 | Not Rated | Not Rated | Not Rated | Not Rated | 6,300 | Lubricated | -50° to 130° | ABEC-1 | 00000000 | 0000000 |
Angular-Contact Thrust Ball Bearings
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.
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.
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 | ||||||||||||||
7208 | 40 | 80 | 18 | Steel | 8,450 | 5,800 | 11,000 | Required | 40° | -20° to 230° | ABEC-3 | __ | 0000000 | 0000000 |
Sealed | ||||||||||||||
7208-2RS | 40 | 80 | 18 | Steel | 7,600 | 5,250 | 5,000 | Lubricated | 40° | -20° to 230° | ABEC-1 | DIN 628-1 | 0000000 | 000000 |
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 | |||||||||||||
7208 | 40 | 80 | 18 | Steel | 8,500 | 5,650 | 19,200 | Required | 15° | -40° to 245° | ABEC-7 | 0000000 | 0000000 |
Sealed | |||||||||||||
7011 | 55 | 90 | 18 | Steel | 8,050 | 6,400 | 15,900 | Lubricated | 15° | 0° to 230° | ABEC-7 | 0000000 | 000000 |
7012 | 60 | 95 | 18 | Steel | 8,300 | 6,850 | 14,900 | Lubricated | 15° | 0° to 230° | ABEC-7 | 0000000 | 00000000 |
7013 | 65 | 100 | 18 | Steel | 8,750 | 7,750 | 14,000 | Lubricated | 15° | 0° to 230° | ABEC-7 | 0000000 | 00000000 |
Spherical-Roller Bearings
Two rows of rollers give these bearings dynamic radial load capacities over five times higher than comparably sized tapered-roller bearings. Also known as rock crusher bearings, they handle heavy shock loads and are used for metal milling machinery, mining and oil field equipment, and in paper mills.
For technical drawings and 3-D models, click on a part number.
Combined Load Cap., lbs. | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia., mm | For Housing ID, mm | Wd., mm | Bearing Trade Number | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Max. Temp. Range, °F | Each | |
Open | |||||||||||
25 | 52 | 18 | 22205 | Steel | 8,400 | 8,300 | 7,100 | Required | 390 | 000000 | 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.
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 | |
Sealed—One Side | ||||||||||||
15mm | 21mm | 18mm | Steel | 2,350 | 3,200 | 9,900 | Lubricated | 8 | 0° to 210° | DIN 618 | 00000000 | 000000 |
20mm | 26mm | 18mm | Steel | 2,850 | 4,500 | 7,600 | Lubricated | 8 | -20° to 210° | DIN 618, ISO 3245 | 0000000 | 00000 |
22mm | 28mm | 18mm | Steel | 3,000 | 4,950 | 7,000 | Lubricated | 8 | 0° to 210° | DIN 618 | 00000000 | 00000 |
25mm | 32mm | 18mm | Steel | 3,500 | 5,350 | 6,100 | Lubricated | 8 | 0° to 210° | DIN 618 | 00000000 | 00000 |
30mm | 37mm | 18mm | Steel | 3,850 | 6,500 | 5,200 | Lubricated | 8 | 0° to 210° | DIN 618 | 00000000 | 00000 |
Cylindrical Roller Bearings
With cylindrical rollers to distribute load over a large surface area, these bearings are often used to support heavy loads at high speeds in applications such as power generation and metal recycling. A cage prevents the rollers from touching each other, reducing friction for high-speed use. All of these bearings have an inner ring that's flanged on one side, so they only allow heat expansion in one direction. The bearings can be taken apart, so you can install them with precision and quickly dismantle them for maintenance or replacement.
For technical drawings and 3-D models, click on a part number.
Radial Load Capacity, lbs. | Thrust Load Capacity, lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Diameter, mm | For Housing ID, mm | Width, mm | Ring Material | Dynamic | Static | Dynamic | Static | Maximum Speed, rpm | Lubrication | For Shaft Surface Smoothness (Ra), microns | Temperature Range, °F | Specifications Met | Each | |
For Combined Radial and Thrust Loads | ||||||||||||||
Open | ||||||||||||||
40 | 80 | 18 | Steel | 14,150 | 11,900 | Not Rated | Not Rated | 10,900 | Required | 0.8 | -20° to 245° | DIN 5412-1 | 00000000 | 0000000 |
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.
For technical drawings and 3-D models, click on a part number.
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.
Chamfered-face retaining nuts weigh less and produce less heat than stepped-face nuts. Some meet ISO 2982 (formerly DIN 981), an international standard for bearing locknut dimensions. Their sizes correspond to SKF KM series. Use them with DIN 5406 spring lock washers.
Carbon steel retaining nuts are strong and resist wear.
For technical drawings and 3-D models, click on a part number.