Send a part number, a photo, or a whole BOM — we supply it and stand behind it. EXW Singapore — collect from our office.

3G Electric
THOMSON SM20OPN Open Bearing Seal, Steel/Rubber, For 20 mm Shaft, MAM20/SSEM20 - Linear Bearing Seals
THOMSONLinear Bearing Seals

THOMSON SM20OPN Open Bearing Seal, Steel/Rubber, For 20 mm Shaft, MAM20/SSEM20

The THOMSON External Seal: Open Bearing Seal is a linear bearing seal constructed from steel and rubber. It is designed for use with a 20 mm nominal shaft diameter and is compatible with the MAM20 and SSEM20 bearing…

SKU 3G-OTH-120933

Brand
THOMSON
Item
SM20OPN Open Bearing Seal, Steel/Rubber, For 20 mm Shaft, MAM20/SSEM20
Part Number
SM20OPN
Category
Linear Bearing Seals
Available to Order
Also known as:SM20OPNTHOMSON
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
EXW Singapore
Collect or forward from our office
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.

Technical Specifications

THOMSON
Manufacturer Part Number
SM20OPN
Type
Steel/Rubber, For 20 mm Nominal Shaft Dia, MAM20/SSEM20
Material
Steel/Rubber
Compatible with Manufacturer Part Number
MAM20

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The THOMSON External Seal: Open Bearing Seal is a linear bearing seal constructed from steel and rubber. It is designed for use with a 20 mm nominal shaft diameter and is compatible with the MAM20 and SSEM20 bearing models (MPN SM20OPN). This seal is intended to protect the bearing from contaminants.

Frequently Asked Questions

What is the THOMSON SM20OPN external seal used for?

The THOMSON SM20OPN external seal protects linear bearings from contaminants like dust and debris. It is designed for 20 mm nominal shaft diameter bearings, specifically the MAM20 and SSEM20 models, extending service life in industrial automation and material handling applications.

What are the specifications of the THOMSON SM20OPN bearing seal?

The THOMSON SM20OPN is an open bearing seal made from steel and rubber. It fits a 20 mm nominal shaft diameter and is compatible with MAM20 and SSEM20 bearing models. The steel/rubber construction provides durability while sealing out contaminants in linear motion systems.

Where to buy THOMSON SM20OPN bearing seals worldwide?

3G Electric supplies the THOMSON SM20OPN external seal to customers worldwide. We handle full logistics, customs clearance, and delivery for global orders. Contact our team to source this genuine THOMSON linear bearing seal for your application.

How to install the THOMSON SM20OPN open bearing seal?

To install the THOMSON SM20OPN seal, first ensure the shaft and bearing housing are clean. Slide the seal over the 20 mm shaft and seat it against the bearing face. Secure it per the manufacturer's instructions, taking care not to damage the rubber lip. Proper installation prevents contamination ingress.

Used in

Common applications for THOMSON
Packaging equipment — Thomson PLM series polymer bushings for low-load, low-speed linear motion in wrapping and labeling mechanisms.
Laboratory instruments — Thomson SUPER12 closed linear ball bearings for precise linear guidance in analytical and testing equipment.
Semiconductor handling — Thomson closed linear ball bearings for smooth, low-friction movement in wafer transport and positioning systems.
Medical devices — Thomson polymer bushings for maintenance-free linear motion in light-duty diagnostic and therapeutic equipment.
General automation — Thomson linear ball bearings and rail systems for pick-and-place, assembly, and material handling applications.
Light-duty machinery — Thomson PLM polymer bushings for self-lubricating linear motion in office and packaging machinery.
Not sure this is the right part? Photo-identify it→

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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from THOMSON

View all THOMSON parts →
Closed bearing seal for linear bearing applications. Constructed of steel and rubber, designed for use with a 1-inch nominal shaft diameter. Prevents contamination and retains lubrication in linear motion systems
THOMSON
Closed bearing seal for linear bearing applications. Constructed of steel and rubber, designed for use with a 1-inch nominal shaft diameter. Prevents contamination and retains lubrication in linear motion systems

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first