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THOMSON External Seal: Open Bearing Seal, Steel/Rubber, For 12 mm Nominal Shaft Dia - Linear Bearing Seals
THOMSONLinear Bearing Seals

THOMSON External Seal: Open Bearing Seal, Steel/Rubber, For 12 mm Nominal Shaft Dia

The THOMSON External Seal: Open Bearing Seal is a linear bearing seal made of Steel/Rubber. It is compatible with manufacturer part number SPM12 and is designed for a 12 mm nominal shaft diameter. This seal is…

SKU 3G-OTH-120843

Brand
THOMSON
Item
External Seal: Open Bearing Seal, Steel/Rubber, For 12 mm Nominal Shaft Dia
Category
Linear Bearing Seals
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

THOMSON
Manufacturer Part Number
SM12OPN
Type
Steel/Rubber, For 12 mm Nominal Shaft Dia, MAM12/SPM12
Material
Steel/Rubber
Compatible with Manufacturer Part Number
SPM12

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

Product Description

The THOMSON External Seal: Open Bearing Seal is a linear bearing seal made of Steel/Rubber. It is compatible with manufacturer part number SPM12 and is designed for a 12 mm nominal shaft diameter. This seal is identified by manufacturer part number SM12OPN.

Frequently Asked Questions

What is the THOMSON SM12OPN external seal used for?

The THOMSON SM12OPN external seal protects linear bearings from contaminants like dust and debris. It is designed for 12 mm nominal shaft diameter systems, extending bearing life in industrial automation, packaging, and material handling equipment.

What are the specifications of the THOMSON SM12OPN bearing seal?

The THOMSON SM12OPN is an open bearing seal made of steel and rubber. It fits a 12 mm nominal shaft diameter and is compatible with manufacturer part number SPM12. This seal is designed for use with MAM12/SPM12 linear bearing housings.

Where to buy the THOMSON SM12OPN bearing seal worldwide?

3G Electric supplies the THOMSON SM12OPN bearing seal worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this genuine THOMSON part to your facility, regardless of location.

How to install the THOMSON SM12OPN external seal?

To install the THOMSON SM12OPN seal, first ensure the shaft and housing bore are clean. Press the seal into the housing groove, ensuring the steel/rubber lip faces the contaminant source. Lubricate lightly per manufacturer guidelines to avoid seal damage during installation.

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: 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 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 20 mm Nominal Shaft Dia, MAM20/SSEM20 (MPN SM20)
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THOMSON External Seal: Closed Bearing Seal, Steel/Rubber, For 20 mm Nominal Shaft Dia, MAM20/SSEM20 (MPN SM20)
THOMSON External Seal: Closed Bearing Seal, Steel/Rubber, For 8 mm Nominal Shaft Dia, MAM08/SPM08 (MPN SM08)
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THOMSON External Seal: Closed Bearing Seal, Steel/Rubber, For 8 mm Nominal Shaft Dia, MAM08/SPM08 (MPN SM08)
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: 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)

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