SEALMASTER Retaining-Ring Cylindrical Insert Bearing, ER-21
The SEALMASTER ER-21 is a retaining-ring cylindrical insert bearing, specifically a radial/deep groove ball bearing with an inch-system design. It features a 1 5/16 in bore, 2 53/64 in OD, and 0.938 in outer ring…
SKU 3G-OTH-99200
Also listed as: ER21 · ER 21
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 SEALMASTER ER-21 is a retaining-ring cylindrical insert bearing, specifically a radial/deep groove ball bearing with an inch-system design. It features a 1 5/16 in bore, 2 53/64 in OD, and 0.938 in outer ring width, with double-sealed closure and set screw locking. This bearing is identified by the industry number ER-21 and manufacturer part number ER-21.
Frequently Asked Questions
What is the SEALMASTER ER-21 insert bearing used for?
The SEALMASTER ER-21 is a retaining-ring cylindrical insert bearing used in industrial power transmission and material handling equipment. Its radial/deep groove ball design supports moderate radial and axial loads, making it suitable for conveyors, fans, and agricultural machinery where inch-dimension shafts and set screw locking are required.
What are the specifications of the SEALMASTER ER-21 bearing?
The SEALMASTER ER-21 is an inch-system radial/deep groove ball insert bearing with a 1 5/16 in bore, 2 53/64 in OD, and 0.938 in outer ring width. It features double-sealed closure, set screw locking, and is identified by industry number ER-21. The manufacturer part number is ER-21.
Where to buy the SEALMASTER ER-21 bearing worldwide?
3G Electric supplies the SEALMASTER ER-21 insert bearing worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time; we source and deliver this inch-system bearing to any country.
How to install the SEALMASTER ER-21 insert bearing?
To install the SEALMASTER ER-21, first clean the shaft and housing bore. Slide the bearing onto the shaft, then tighten the set screws evenly to lock it in place. Ensure the retaining ring is seated properly in the housing groove. Use a torque wrench to avoid over-tightening. Always follow manufacturer guidelines for shaft tolerances.
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3G Electric supplies SEALMASTER retaining-ring cylindrical insert bearings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
