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Needle Roller Inner Rings
Budget Needle Roller Inner Ring LR40x45x20.5mm
Budget LR Series Inner Rings: Made from carbon chromium steel and hardened. The bore and outside diameter are ground, however the sides are not ground and the edges are only smoothed. [show more]... |
Inside Diameter: 40mm
Outside Diameter: 45mm
Width: 20.5mm
NTN 1R28X32X17 Needle Roller Inner Race 28x32x17mm
- Precision-Ground for superior performance
- Exceptional wear resistance and durability
- Optimized load distribution, smooth rotation, and long-term system reliability
NTN Inner Races: These inner races are engineered for precision, durability, and reliability in high-performance applications. Manufactured from high-quality, hardened bearing steel, it [show more]...
Inside Diameter: 28mm
Outside Diameter: 32mm
Width: 17mm
Needle Roller Bearings
Adhesives
Lubricants
NTN 1R28X32X20 Needle Roller Inner Race 28x32x20mm
- Precision-Ground for superior performance
- Exceptional wear resistance and durability
- Optimized load distribution, smooth rotation, and long-term system reliability
NTN Inner Races: These inner races are engineered for precision, durability, and reliability in high-performance applications. Manufactured from high-quality, hardened bearing steel, it [show more]...
Inside Diameter: 28mm
Outside Diameter: 32mm
Width: 20mm
Needle Roller Bearings
Adhesives
Lubricants
IRB1220 Imperial Inner Race 3/4x1x32
Inner Rings: Made from carbon chromium steel are hardened and ground to their final dimensions. To facilitate the use with needle roller bearings a small lead in either side of the [show more]... |
Inside Diameter: 19.05mm = 0.75 (3/4) inch
Outside Diameter: 25.4mm = 1 inch
Width: 32mm
Major Brand Needle Roller Inner Ring with Lubrication Hole IRZ15x20x14IS1mm
| IRZ Series Inner Rings : Made from carbon chromium steel are hardened and ground to their final dimensions. To facilitate the use of the full width of the bearing surface when used with [show more]... |
Inside Diameter: 15mm
Outside Diameter: 20mm
Width: 14mm
Major Brand Needle Roller Inner Ring IR6x9x12mm
| Inner Rings : Made from carbon chromium steel are hardened and ground to their final dimensions. To facilitate the use with needle roller bearings a lead in either side of the sleeve is [show more]... |
Inside Diameter: 6mm
Outside Diameter: 9mm
Width: 12mm
IRB188 Imperial Inner Race 1-1/8x1-3/8x12.95
Inner Rings: Made from carbon chromium steel are hardened and ground to their final dimensions. To facilitate the use with needle roller bearings a small lead in either side of the [show more]... |
Inside Diameter: 28.58mm = 1.125 (1-1/8) inch
Outside Diameter: 34.93mm = 1.375 (1-3/8) inch
Width: 12.95mm
LRB81212 Imperial Needle Roller Inner Race 1/2x3/4x19.3
| Imperial Inner Rings:Made from carbon chromium steel are hardened and ground to their final dimensions. To facilitate the use with needle roller bearings a lead in either side of the [show more]... |
Inside Diameter: 12.7mm = 0.5 (1/2) inch
Outside Diameter: 19.05mm = 0.75 (3/4) inch
Width: 19.3mm
IRT1216 Needle Roller Inner Race 12x15x16.5mm
| Inner Rings: Made from carbon chromium steel are hardened and ground to their final dimensions. To facilitate the use with needle roller bearings a lead in either side of the sleeve is [show more]... |
Inside Diameter: 12mm
Outside Diameter: 15mm
Width: 16.5mm
Major Brand Needle Roller Inner Ring IR7x10x12mm
| Inner Rings : Made from carbon chromium steel are hardened and ground to their final dimensions. To facilitate the use with needle roller bearings a lead in either side of the sleeve is [show more]... |
Inside Diameter: 7mm
Outside Diameter: 10mm
Width: 12mm
Budget Needle Roller Inner Ring IR20x25x18mm
| Budget Inner Rings: Made from carbon chromium steel are hardened and ground to their final dimensions. To facilitate the use with needle roller bearings a lead in either side of the [show more]... |
Inside Diameter: 20mm
Outside Diameter: 25mm
Width: 18mm
Budget Needle Roller Inner Ring IR35x42x13mm
| Budget Inner Rings: Made from carbon chromium steel are hardened and ground to their final dimensions. To facilitate the use with needle roller bearings a lead in either side of the [show more]... |
Inside Diameter: 35mm
Outside Diameter: 42mm
Width: 13mm
Budget Needle Roller Inner Ring LR30x35x12.5mm
Budget LR Series Inner Rings: Made from carbon chromium steel and hardened. The bore and outside diameter are ground, however the sides are not ground and the edges are only smoothed. [show more]... |
Inside Diameter: 30mm
Outside Diameter: 35mm
Width: 12.5mm
Major Brand Needle Roller Inner Ring IR5x8x12mm
| Inner Rings : Made from carbon chromium steel are hardened and ground to their final dimensions. To facilitate the use with needle roller bearings a lead in either side of the sleeve is [show more]... |
Inside Diameter: 5mm
Outside Diameter: 8mm
Width: 12mm
LRT455520 Needle Roller Inner Ring 45x55x20mm
| IKO LRT Inner Rings: These inner rings are heat-treated and finished by grinding to a high degree of accuracy. LRT series inner rings are economical and can be used with RNA49, RNA69, [show more]... |
Inside Diameter: 45mm
Outside Diameter: 55mm
Width: 20mm
Needle Roller Bearings
Adhesives
Lubricants
LRT323730 Needle Roller Inner Ring 32x37x30mm
| IKO LRT Inner Rings: These inner rings are heat-treated and finished by grinding to a high degree of accuracy. LRT series inner rings are economical and can be used with RNA49, RNA69, [show more]... |
Inside Diameter: 32mm
Outside Diameter: 37mm
Width: 30mm
Needle Roller Bearings
Adhesives
Lubricants
LRT455222 Needle Roller Inner Ring 45x52x22mm
| IKO LRT Inner Rings: These inner rings are heat-treated and finished by grinding to a high degree of accuracy. LRT series inner rings are economical and can be used with RNA49, RNA69, [show more]... |
Inside Diameter: 45mm
Outside Diameter: 52mm
Width: 22mm
Needle Roller Bearings
Adhesives
Lubricants
Budget Needle Roller Inner Ring IR60x68x25mm
| Budget Inner Rings: Made from carbon chromium steel are hardened and ground to their final dimensions. To facilitate the use with needle roller bearings a lead in either side of the [show more]... |
Inside Diameter: 60mm
Outside Diameter: 68mm
Width: 25mm
Major Brand Needle Roller Inner Ring IR17x22x14mm
| Inner Rings : Made from carbon chromium steel are hardened and ground to their final dimensions. To facilitate the use with needle roller bearings a lead in either side of the sleeve is [show more]... |
Inside Diameter: 17mm
Outside Diameter: 22mm
Width: 14mm
IRT1225-2 Needle Roller Inner Race 12x17x25.5mm
| Inner Rings: Made from carbon chromium steel are hardened and ground to their final dimensions. To facilitate the use with needle roller bearings a lead in either side of the sleeve is [show more]... |
Inside Diameter: 12mm
Outside Diameter: 17mm
Width: 25.5mm
IRT1525 Needle Roller Inner Race 15x18x25.5mm
| Inner Rings: Made from carbon chromium steel are hardened and ground to their final dimensions. To facilitate the use with needle roller bearings a lead in either side of the sleeve is [show more]... |
Inside Diameter: 15mm
Outside Diameter: 18mm
Width: 25.5mm
LRTZ202531 Needle Roller Inner Race 20x25x31mm
| Inner Rings: Made from carbon chromium steel are hardened and ground to their final dimensions. To facilitate the use with needle roller bearings a small lead chamfer on either side of [show more]... |
Inside Diameter: 20mm
Outside Diameter: 25mm
Width: 31mm
Budget Needle Roller Inner Ring IR45x55x20IS1mm
Budget Inner Rings: Made from carbon chromium steel are hardened and ground to their final dimensions. To facilitate the use with needle roller bearings a lead in either side of the [show more]... |
Inside Diameter: 45mm
Outside Diameter: 55mm
Width: 20mm
LRB61012 Imperial Needle Roller Inner Race 3/8x5/8x19.3
| Imperial Inner Rings:Made from carbon chromium steel are hardened and ground to their final dimensions. To facilitate the use with needle roller bearings a lead in either side of the [show more]... |
Inside Diameter: 9.53mm = 0.375 (3/8) inch
Outside Diameter: 15.88mm = 0.625 (5/8) inch
Width: 19.3mm
LRT404540 Needle Roller Inner Ring 40x45x40mm
| IKO LRT Inner Rings: These inner rings are heat-treated and finished by grinding to a high degree of accuracy. LRT series inner rings are economical and can be used with RNA49, RNA69, [show more]... |
Inside Diameter: 40mm
Outside Diameter: 45mm
Width: 40mm
Needle Roller Bearings
Adhesives
Lubricants
Needle Roller Inner Rings
Used in situations where a larger width is needed but run out tolerances are less important, needle roller inner rings are an economical answer that can be used in conjunction with a range of cage type and needle roller bearings.
Here at Simply Bearings, we supply needle roller inner rings made from hardened carbon chromium steel. They have a ground bore and outer diameter with sides and edges that are only smoothed. We stock needle roller inner rings with inside diameters from 5mm up to 440mm and outside diameters from 7mm to 490mm, plus widths from 9.75mm up to 160mm. The rings are produced by major brands including IKO and economy versions are available too, for those on a tight budget.
Selecting the correct product from our website is a simple process, just pick the dimensions you want from the drop-down menus shown at the top of the product category page. If you need more detail on a specific product you can click on the Technical tab from its page to see a full list of dimensions along with a sectioned drawing which should give you all the information you need to make sure you're getting the right item. If there are any questions that the website doesn't answer, you can always give our customer services team a call, or drop them an email and they'll be happy to help with your query.
When you're ready to buy, ordering from our website is fast and secure, or you can give us a call and buy over the phone if you prefer. Second class postal delivery is free of charge on all of our orders, but if you need to get hold of your needle roller inner rings faster, you can opt for first class or courier delivery at the checkout. Same day and next day services are available and the cost will be calculated for you on the website. If you're local to our warehouse you can collect your order in person, but please give us a ring first to make arrangements. Overseas orders are no problem either and we can offer low-cost delivery on our products to most part of the world.
When you order from Simply Bearings, you have the reassurance of being covered by our 90-day, no-quibble, money back guarantee. You also have the peace of mind that comes from dealing with an ISO 9001 certified company.







