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NTN Tapered Roller Bearing Cup: 3 in OD, 0.937 in Cup Wd, 0.937 in Overall Wd - Tapered Roller Bearing Cups
NTNTapered Roller Bearing Cups

NTN Tapered Roller Bearing Cup: 3 in OD, 0.937 in Cup Wd, 0.937 in Overall Wd

The NTN Tapered Roller Bearing Cup (SKU 3G-OTH-101883) is an inch-system cup component for tapered roller bearing assemblies, featuring a 3-inch outside diameter, 0.937-inch cup width, and 0.937-inch overall width…

SKU 3G-OTH-101883

Brand
NTN
Item
Tapered Roller Bearing Cup: 3 in OD, 0.937 in Cup Wd, 0.937 in Overall Wd
Category
Tapered Roller Bearing Cups
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

NTN
Manufacturer Part Number
31521
Type
31521
Cup Wd
0.937 in
Overall Wd
0.937 in
Ring Material
Alloy Steel
System of Measurement
Inch
Compatible Cone Manufacturer Part Number
31593

Technical Documents

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NTN Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The NTN Tapered Roller Bearing Cup (SKU 3G-OTH-101883) is an inch-system cup component for tapered roller bearing assemblies, featuring a 3-inch outside diameter, 0.937-inch cup width, and 0.937-inch overall width. Constructed from alloy steel, this NTN-manufactured cup (part number 31521) is designed for use with a compatible cone (manufacturer part number 31593).

Frequently Asked Questions

What is an NTN tapered roller bearing cup used for?

An NTN tapered roller bearing cup is the outer ring component of a tapered roller bearing assembly. It supports radial and axial loads in industrial machinery, gearboxes, and conveyor systems. Paired with a compatible cone (part 31593), it enables smooth rotation under heavy loads.

What are the specifications of the NTN 31521 tapered roller bearing cup?

The NTN 31521 tapered roller bearing cup has a 3 in outside diameter, 0.937 in cup width, and 0.937 in overall width. It is made of alloy steel, uses inch-system measurement, and is designed to pair with cone part number 31593.

Where to buy NTN 31521 tapered roller bearing cup worldwide?

3G Electric supplies the NTN 31521 tapered roller bearing cup worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this alloy steel cup to your facility. Contact us for pricing and lead time.

How to select the correct tapered roller bearing cup for an assembly?

Select a tapered roller bearing cup by matching its outside diameter, width, and system of measurement to your application. The NTN 31521 cup (3 in OD, 0.937 in width) requires a compatible cone such as NTN 31593. Verify load ratings and shaft fit before ordering.

Used in

Common applications for NTN
Automotive driveline — NTN tapered roller bearing assemblies (e.g., 4T-30303) for differential and wheel hub applications
Conveyor systems — NTN 4-bolt flange bearings (e.g., UCF211-200D1) for idler rollers and take-up units
Machine tool spindles — NTN duplex angular contact bearings (e.g., ML7006CVDUJ74S) for high-speed precision rotation
Industrial fans — NTN high-temperature radial ball bearings (e.g., 6004FT150) for oven and dryer exhaust systems
Pump drives — NTN radial ball bearings (e.g., 6008LLBC3/L627) for electric motor and pump shaft support
Agricultural equipment — NTN tapered roller bearing cones (e.g., LM29748L) for gearbox and PTO shaft assemblies

NTN Products

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.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
NTN Tapered Roller Bearing Cup: 3 in OD, 0.937 in Cup Wd, 0.937 in Overall Wd, 31520
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NTN Tapered Roller Bearing Cup: 3 in OD, 0.937 in Cup Wd, 0.937 in Overall Wd, 31520
NTN Tapered Roller Bearing Cup: 4 in OD, 1 in Cup Wd, 1 in Overall Wd, 49520
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NTN Tapered Roller Bearing Cup: 4 in OD, 1 in Cup Wd, 1 in Overall Wd, 49520
NTN Tapered Roller Bearing Cup: 4 21/64 in OD, 0.75 in Cup Wd, 0.75 in Overall Wd, 29521
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NTN Tapered Roller Bearing Cup: 4 21/64 in OD, 0.75 in Cup Wd, 0.75 in Overall Wd, 29521
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NTN Tapered Roller Bearing Cup: 7 1/2 in OD, 2.875 in Cup Wd, 2.875 in Overall Wd, 48320D
NTN Tapered Roller Bearing Cup: 4 7/16 in OD, 0.937 in Cup Wd, 0.937 in Overall Wd, 39521
NTN
NTN Tapered Roller Bearing Cup: 4 7/16 in OD, 0.937 in Cup Wd, 0.937 in Overall Wd, 39521
NTN Tapered Roller Bearing Cup: 8 15/16 in OD, 0.906 in Cup Wd, 0.906 in Overall Wd, 36920
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NTN Tapered Roller Bearing Cup: 8 15/16 in OD, 0.906 in Cup Wd, 0.906 in Overall Wd, 36920

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