SMITH BEARING IRR-4 Needle Roller Bearing Inner Ring
The SMITH BEARING Inner Ring: 4 in Bore is an inch-system needle roller bearing inner ring made of alloy steel. It has a 4 in bore, 4.998 in OD, and 2.26 in overall width, with manufacturer part number IRR-4.
SKU 3G-OTH-103308
Also listed as: IRR4 · IRR 4
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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Product Description
The SMITH BEARING Inner Ring: 4 in Bore is an inch-system needle roller bearing inner ring made of alloy steel. It has a 4 in bore, 4.998 in OD, and 2.26 in overall width, with manufacturer part number IRR-4.
Frequently Asked Questions
What is the SMITH BEARING Inner Ring IRR-4 used for?
The SMITH BEARING Inner Ring IRR-4 is used as a precision track for needle rollers in heavy-duty rotating assemblies. It is commonly applied in industrial gearboxes, conveyor systems, and machine tool spindles where inch-system dimensions and alloy steel durability are required.
What are the specifications of the SMITH BEARING Inner Ring IRR-4?
The SMITH BEARING Inner Ring IRR-4 has a 4 in bore, 4.998 in OD, and 2.26 in overall width. It is made of alloy steel, uses the inch system of measurement, and is manufactured by SMITH BEARING. The part number is IRR-4.
Where to buy the SMITH BEARING Inner Ring IRR-4 worldwide?
You can source the SMITH BEARING Inner Ring IRR-4 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time.
How to install the SMITH BEARING Inner Ring IRR-4?
To install the SMITH BEARING Inner Ring IRR-4, press the ring onto a clean, properly sized shaft using an arbor press or hydraulic tool. Ensure the bore and shaft are free of burrs and lubricated lightly. Avoid hammering directly to prevent damage to the alloy steel surface.
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3G Electric supplies SMITH BEARING needle roller bearing inner rings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.