NTN Tapered Roller Bearing Cup: 3 1/2 in Bore, 3 59/64 in OD, 0.781 in Cup Wd
The NTN Tapered Roller Bearing Cup (SKU 28921, MPN 28921) is an inch-system cup with a 3 1/2 in bore, 3 59/64 in OD, and 0.781 in cup/overall width. It is made of alloy steel and is compatible with cone MPN 28985.
SKU 3G-OTH-108286
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 NTN Tapered Roller Bearing Cup (SKU 28921, MPN 28921) is an inch-system cup with a 3 1/2 in bore, 3 59/64 in OD, and 0.781 in cup/overall width. It is made of alloy steel and is compatible with cone MPN 28985.
Frequently Asked Questions
What is the NTN tapered roller bearing cup 28921 used for?
The NTN 28921 cup is used in tapered roller bearing assemblies to support radial and axial loads in industrial equipment such as gearboxes, conveyors, and pumps. It pairs with cone 28985 to form a complete bearing set for rotating shafts.
What are the specifications of the NTN 28921 bearing cup?
The NTN 28921 cup has a 3 1/2 in bore, 3 59/64 in OD, and 0.781 in cup width. It is made of alloy steel, uses inch-system measurement, and is compatible with cone part number 28985. The overall width matches the cup width at 0.781 in.
Where to buy the NTN 28921 tapered roller bearing cup worldwide?
3G Electric supplies the NTN 28921 cup worldwide, handling logistics and customs for delivery. As a global industrial sourcing partner, we provide genuine NTN components to support maintenance and production needs across industries.
How to select the correct cup for an NTN tapered roller bearing?
Match the cup bore to your shaft diameter and the OD to your housing bore. Ensure the cup width aligns with the cone width for proper preload. The NTN 28921 cup is designed for inch-system applications and pairs with cone 28985.
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3G Electric supplies NTN tapered roller bearing cups. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
