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THOMSON External Seal: Closed Bearing Seal, Steel/Rubber, For 20 mm Nominal Shaft Dia - Linear Bearing Seals
THOMSONLinear Bearing Seals

THOMSON External Seal: Closed Bearing Seal, Steel/Rubber, For 20 mm Nominal Shaft Dia

The THOMSON External Seal: Closed Bearing Seal is a linear bearing seal made of Steel/Rubber. It is compatible with manufacturer part number MAM20 and is designed for a 20 mm nominal shaft diameter. This seal is…

SKU 3G-OTH-120962

Also listed as: SM 20 · SM-20

Brand
THOMSON
Item
External Seal: Closed Bearing Seal, Steel/Rubber, For 20 mm Nominal Shaft Dia
Category
Linear Bearing Seals
Available to Order
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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

THOMSON
Manufacturer Part Number
SM20
Type
Steel/Rubber, For 20 mm Nominal Shaft Dia, MAM20/SSEM20
Material
Steel/Rubber
Compatible with Manufacturer Part Number
MAM20

Technical Documents

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

Product Description

The THOMSON External Seal: Closed Bearing Seal is a linear bearing seal made of Steel/Rubber. It is compatible with manufacturer part number MAM20 and is designed for a 20 mm nominal shaft diameter. This seal is identified by manufacturer part number SM20.

Frequently Asked Questions

What is the THOMSON External Seal SM20 used for?

The THOMSON External Seal SM20 is a closed bearing seal used to protect linear bearings from contaminants. It is designed for applications requiring a steel/rubber seal for a 20 mm nominal shaft diameter, compatible with MAM20 series bearings.

What are the specifications of the THOMSON SM20 seal?

The THOMSON SM20 is an external closed bearing seal made of steel and rubber. It fits a 20 mm nominal shaft diameter and is compatible with manufacturer part number MAM20. The manufacturer part number is SM20.

Where to buy the THOMSON SM20 seal worldwide?

You can source the THOMSON SM20 seal 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 THOMSON SM20 external seal?

To install the THOMSON SM20 seal, ensure the shaft is clean and free of debris. Press the seal evenly into the bearing housing, aligning it with the 20 mm shaft. Follow standard linear bearing seal installation practices to avoid damage.

Used in

Common applications for THOMSON
Industrial automation — Thomson 500 Series ball carriages (511H25C0D) used in linear motion axes for pick-and-place systems.
Packaging machinery — Thomson profile ball rails (521H30AD+1000) guide conveyor or carton-erecting mechanisms.
Material handling — Thomson linear ball bearings (SUPER32OPN) support sliding loads in transfer stations.
Machine tool — Thomson ball nut end blocks (7829547) integrate with ball screws for CNC table positioning.
Medical equipment — Thomson pre-drilled shaft support rails (LSR-10-PD) mount linear guides in diagnostic scanners.
Automated assembly — Thomson double-acting seals (OPNS1000) protect linear bearings in dusty environments.

THOMSON Products

3G Electric supplies THOMSON linear bearing seals. 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
THOMSON External Seal: Open Bearing Seal, Steel/Rubber, For 25 mm Nominal Shaft Dia, MAM25/SSEM25 (MPN SM25OPN)
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THOMSON External Seal: Open Bearing Seal, Steel/Rubber, For 25 mm Nominal Shaft Dia, MAM25/SSEM25 (MPN SM25OPN)
THOMSON External Seal: Closed Bearing Seal, Steel/Rubber, For 12 mm Nominal Shaft Dia, MAM12/SPM12 (MPN SM12)
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THOMSON External Seal: Closed Bearing Seal, Steel/Rubber, For 12 mm Nominal Shaft Dia, MAM12/SPM12 (MPN SM12)
THOMSON External Seal: Open Bearing Seal, Steel/Rubber, For 40 mm Nominal Shaft Dia, MAM40/SSEM40 (MPN SM40OPN)
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THOMSON External Seal: Open Bearing Seal, Steel/Rubber, For 40 mm Nominal Shaft Dia, MAM40/SSEM40 (MPN SM40OPN)
THOMSON External Seal: Closed Bearing Seal, Steel/Rubber, For 30 mm Nominal Shaft Dia, MAM30/SSEM30 (MPN SM30)
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THOMSON External Seal: Closed Bearing Seal, Steel/Rubber, For 30 mm Nominal Shaft Dia, MAM30/SSEM30 (MPN SM30)
THOMSON External Seal: Open Bearing Seal, Steel/Rubber, For 12 mm Nominal Shaft Dia, MAM12/SPM12 (MPN SM12OPN)
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THOMSON External Seal: Open Bearing Seal, Steel/Rubber, For 12 mm Nominal Shaft Dia, MAM12/SPM12 (MPN SM12OPN)
THOMSON External Seal: Open Bearing Seal, Steel/Rubber, For 16 mm Nominal Shaft Dia, MAM16/SSEM16 (MPN SM16OPN)
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THOMSON External Seal: Open Bearing Seal, Steel/Rubber, For 16 mm Nominal Shaft Dia, MAM16/SSEM16 (MPN SM16OPN)

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