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THOMSON External Seal: Closed Bearing Seal, Steel/Rubber, For 40 mm Nominal Shaft Dia - Linear Bearing Seals
THOMSONLinear Bearing Seals

THOMSON External Seal: Closed Bearing Seal, Steel/Rubber, For 40 mm Nominal Shaft Dia

The THOMSON External Seal: Closed Bearing Seal (SKU 3G-OTH-121054) is a linear bearing seal made of Steel/Rubber. It is compatible with manufacturer part number SSEM40 and is designed for a 40 mm nominal shaft…

SKU 3G-OTH-121054

Also listed as: SM 40 · SM-40

Brand
THOMSON
Item
External Seal: Closed Bearing Seal, Steel/Rubber, For 40 mm Nominal Shaft Dia
Category
Linear Bearing Seals
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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.

Technical Specifications

THOMSON
Manufacturer Part Number
SM40
Type
Steel/Rubber, For 40 mm Nominal Shaft Dia, MAM40/SSEM40
Material
Steel/Rubber
Compatible with Manufacturer Part Number
SSEM40

Technical Documents

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

Product Description

The THOMSON External Seal: Closed Bearing Seal (SKU 3G-OTH-121054) is a linear bearing seal made of Steel/Rubber. It is compatible with manufacturer part number SSEM40 and is designed for a 40 mm nominal shaft diameter. This seal is identified by manufacturer part number SM40.

Frequently Asked Questions

What is the THOMSON External Seal: Closed Bearing Seal used for?

The THOMSON External Seal: Closed Bearing Seal protects linear bearings from contaminants like dust and debris. It is designed for use with 40 mm nominal shaft diameter systems, extending bearing life in industrial automation, packaging, and material handling equipment.

What are the specifications of the THOMSON External Seal SM40?

The THOMSON External Seal SM40 is a closed bearing seal made of steel and rubber. It fits a 40 mm nominal shaft diameter and is compatible with manufacturer part number SSEM40. The manufacturer part number is SM40, and it is designed for use with MAM40/SSEM40 bearing housings.

Where to buy the THOMSON External Seal SM40 worldwide?

3G Electric supplies the THOMSON External Seal SM40 to customers worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us to source this seal for your linear bearing application.

How to install the THOMSON External Seal: Closed Bearing Seal?

To install the THOMSON External Seal, clean the shaft and bearing housing thoroughly. Press the seal evenly into the housing groove, ensuring the steel/rubber lip faces the bearing. Avoid sharp tools that could damage the seal. Follow standard linear bearing seal installation practices for best results.

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 40 mm Nominal Shaft Dia, MAM40/SSEM40 (MPN SM40OPN)
THOMSON
THOMSON External Seal: Open Bearing Seal, Steel/Rubber, For 40 mm Nominal Shaft Dia, MAM40/SSEM40 (MPN SM40OPN)
THOMSON External Seal: Open Bearing Seal, Steel/Rubber, For 30 mm Nominal Shaft Dia, MAM30/SSEM30 (MPN SM30OPN)
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THOMSON External Seal: Open Bearing Seal, Steel/Rubber, For 30 mm Nominal Shaft Dia, MAM30/SSEM30 (MPN SM30OPN)
THOMSON External Seal: Closed Bearing Seal, Steel/Rubber, For 30 mm Nominal Shaft Dia, MAM30/SSEM30 (MPN SM30)
THOMSON
THOMSON External Seal: Closed Bearing Seal, Steel/Rubber, For 30 mm Nominal Shaft Dia, MAM30/SSEM30 (MPN SM30)
THOMSON External Seal: Closed Bearing Seal, Steel/Rubber, For 20 mm Nominal Shaft Dia, MAM20/SSEM20 (MPN SM20)
THOMSON
THOMSON External Seal: Closed Bearing Seal, Steel/Rubber, For 20 mm Nominal Shaft Dia, MAM20/SSEM20 (MPN SM20)
THOMSON External Seal: Open Bearing Seal, Steel/Rubber, For 16 mm Nominal Shaft Dia, MAM16/SSEM16 (MPN SM16OPN)
THOMSON
THOMSON External Seal: Open Bearing Seal, Steel/Rubber, For 16 mm Nominal Shaft Dia, MAM16/SSEM16 (MPN SM16OPN)
THOMSON External Seal: Open Bearing Seal, Steel/Rubber, For 25 mm Nominal Shaft Dia, MAM25/SSEM25 (MPN SM25OPN)
THOMSON
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: Closed Bearing Seal, Steel/Rubber, For 25 mm Nominal Shaft Dia, MAM25/SSEM25 (MPN SM25)
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THOMSON External Seal: Closed Bearing Seal, Steel/Rubber, For 25 mm Nominal Shaft Dia, MAM25/SSEM25 (MPN SM25)
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