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SEALMASTER General Purpose Pillow Block Ball Bearing - General Purpose Pillow Block Ball Bearings
SEALMASTERGeneral Purpose Pillow Block Ball Bearings

SEALMASTER General Purpose Pillow Block Ball Bearing

The SEALMASTER Pillow Block Bearing is a general purpose pillow block ball bearing with a 1 5/16 in bore, designed for inch-system applications. This cast-iron unit features set-screw locking and a 1 7/8 in shaft…

SKU 3G-OTH-110170

Also listed as: NP21 · NP 21

Brand
SEALMASTER
Item
General Purpose Pillow Block Ball Bearing
Part Number
NP-21
Category
General Purpose Pillow Block Ball Bearings
Available to Order
Also known as:NP-21SEALMASTER
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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

SEALMASTER
Manufacturer Part Number
NP-21
Type
Cast Iron, Set Screws
Shaft Ht
1 7/8 in
Mounting Bolt Size
1/2 in
System of Measurement
Inch

Technical Documents

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

Product Description

The SEALMASTER Pillow Block Bearing is a general purpose pillow block ball bearing with a 1 5/16 in bore, designed for inch-system applications. This cast-iron unit features set-screw locking and a 1 7/8 in shaft height, with a 1/2 in mounting bolt size (MPN NP-21).

Frequently Asked Questions

What is the SEALMASTER NP-21 pillow block bearing used for?

The SEALMASTER NP-21 is a general purpose pillow block ball bearing used to support rotating shafts in industrial machinery, conveyors, and material handling equipment. Its cast-iron housing and set-screw locking provide reliable shaft retention in moderate-load, inch-system applications.

What are the specifications of the SEALMASTER NP-21 pillow block bearing?

The SEALMASTER NP-21 has a 1 5/16 in bore, 1 7/8 in shaft height, and 1/2 in mounting bolt size. It features a cast-iron housing with set-screw locking and is designed for inch-system applications. The manufacturer part number is NP-21.

Where to buy the SEALMASTER NP-21 pillow block bearing worldwide?

3G Electric supplies the SEALMASTER NP-21 pillow block bearing worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and a quote for your region.

How to install the SEALMASTER NP-21 pillow block bearing?

Mount the bearing on a clean, flat surface using 1/2 in bolts through the base slots. Align the shaft with the bore, tighten the set screws onto the shaft flat, and ensure free rotation. Follow SEALMASTER's generic installation guidelines for proper preload and lubrication.

Used in

Common applications for SEALMASTER
Conveyor systems — SEALMASTER NP series pillow block bearings for belt conveyor idler shafts
Material handling fans — SEALMASTER SFT series flange bearings for fan housing mounting
Pump drives — SEALMASTER MP series medium-duty pillow blocks for pump shaft support
Agricultural equipment — SEALMASTER ER series insert bearings in auger and elevator assemblies
Packaging machinery — SEALMASTER NPL low-base pillow blocks for compact conveyor sections
Industrial blowers — SEALMASTER SFT-23 flange bearing for blower shaft end support
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SEALMASTER Products

3G Electric supplies SEALMASTER general purpose pillow block ball bearings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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This SEALMASTER pillow block ball bearing features a cast iron housing with set screw locking for secure shaft mounting. Designed for inch-system applications, it has a 1 11/16 in shaft height and accepts a 1/2 in mounting bolt. Suitable for supporting rotating shafts in industrial equipment such as conveyors, fans, and pumps
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This SEALMASTER pillow block ball bearing features a cast iron housing with set screw locking for secure shaft mounting. Designed for inch-system applications, it has a 1 11/16 in shaft height and accepts a 1/2 in mounting bolt. Suitable for supporting rotating shafts in industrial equipment such as conveyors, fans, and pumps
This SEALMASTER NP-47 pillow block ball bearing features a cast iron housing and set screw locking for secure shaft mounting. Designed for inch-system applications, it has a 3 1/2 in shaft height and accommodates a 7/8 in mounting bolt. Suitable for general industrial use such as conveyors and fans
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This SEALMASTER NP-47 pillow block ball bearing features a cast iron housing and set screw locking for secure shaft mounting. Designed for inch-system applications, it has a 3 1/2 in shaft height and accommodates a 7/8 in mounting bolt. Suitable for general industrial use such as conveyors and fans

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