Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

THOMSON Profile Ball Rail: 30, 440 mm Overall Lg, 28 mm Overall Wd, 26 mm Overall Ht - Thomson 500 Series Ball Profile Rails
THOMSONThomson 500 Series Ball Profile Rails

THOMSON Profile Ball Rail: 30, 440 mm Overall Lg, 28 mm Overall Wd, 26 mm Overall Ht

The Thomson 500 Series Profile Ball Rail, model 521H30A+440, is a steel ball-profile rail in Size 30 with a nominal rail size of 30. It measures 440 mm overall length, 28 mm overall width, and 26 mm overall height…

SKU 3G-OTH-123770

Also listed as: 521H30A440 · 521H30A 440 · 521H30A-440

Brand
THOMSON
Item
Profile Ball Rail: 30, 440 mm Overall Lg, 28 mm Overall Wd, 26 mm Overall Ht
Category
Thomson 500 Series Ball Profile Rails
Available to Order
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.
Worldwide Shipping
Air & sea freight
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
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
521H30A+440
Type
Steel
Overall Lg
440 mm
Size
30
Overall Ht
26 mm
Overall Wd
28 mm
Rail Holes
6
Nominal Rail Size
30

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 500 Series Profile Ball Rail, model 521H30A+440, is a steel ball-profile rail in Size 30 with a nominal rail size of 30. It measures 440 mm overall length, 28 mm overall width, and 26 mm overall height, and features 6 rail holes.

Frequently Asked Questions

What is the Thomson 521H30A+440 profile ball rail used for?

The Thomson 521H30A+440 is a Size 30 steel profile ball rail from the 500 Series, used in linear motion systems for industrial automation, packaging, and machine tool applications. It provides precise, low-friction guidance for carriages in CNC routers, pick-and-place units, and assembly lines.

What are the specifications of the Thomson 521H30A+440 profile ball rail?

The Thomson 521H30A+440 is a steel profile ball rail with a nominal rail size of 30, overall length of 440 mm, overall width of 28 mm, and overall height of 26 mm. It has 6 rail holes and is part of the Thomson 500 Series. The brand is THOMSON.

Where to buy the Thomson 521H30A+440 profile ball rail worldwide?

3G Electric supplies the Thomson 521H30A+440 profile ball rail worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time; we source and deliver this Thomson linear rail globally.

How to install the Thomson 521H30A+440 profile ball rail?

To install the Thomson 521H30A+440, first ensure the mounting surface is clean and flat. Align the rail using the 6 rail holes and secure with appropriate bolts, tightening to the torque specified by Thomson. Use a straightedge to check alignment before mounting the carriage. Lubricate per Thomson guidelines.

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 thomson 500 series ball profile rails. 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

Compatible alternatives & equivalents

Cross-referenced by specification & description
Profile Ball Rail: 30, 760 mm Overall Lg, 28 mm Overall Wd, 26 mm Overall Ht, Steel, 6 Rail Holes (MPN 521H30A+760)
THOMSON
Profile Ball Rail: 30, 760 mm Overall Lg, 28 mm Overall Wd, 26 mm Overall Ht, Steel, 6 Rail Holes (MPN 521H30A+760)
Profile Ball Rail: 30, 600 mm Overall Lg, 28 mm Overall Wd, 26 mm Overall Ht, Steel, 6 Rail Holes (MPN 521H30A+600)
THOMSON
Profile Ball Rail: 30, 600 mm Overall Lg, 28 mm Overall Wd, 26 mm Overall Ht, Steel, 6 Rail Holes (MPN 521H30A+600)
Profile Ball Rail: 30, 280 mm Overall Lg, 28 mm Overall Wd, 26 mm Overall Ht, Steel, 6 Rail Holes (MPN 521H30A+280)
THOMSON
Profile Ball Rail: 30, 280 mm Overall Lg, 28 mm Overall Wd, 26 mm Overall Ht, Steel, 6 Rail Holes (MPN 521H30A+280)
Profile Ball Rail: 30, 1,240 mm Overall Lg, 28 mm Overall Wd, 26 mm Overall Ht, Steel, 6 Rail Holes (MPN 521H30A+1240)
THOMSON
Profile Ball Rail: 30, 1,240 mm Overall Lg, 28 mm Overall Wd, 26 mm Overall Ht, Steel, 6 Rail Holes (MPN 521H30A+1240)
Profile Ball Rail: 30, 1,000 mm Overall Lg, 28 mm Overall Wd, 26 mm Overall Ht, Steel, 6 Rail Holes (MPN 521H30A+1000)
THOMSON
Profile Ball Rail: 30, 1,000 mm Overall Lg, 28 mm Overall Wd, 26 mm Overall Ht, Steel, 6 Rail Holes (MPN 521H30A+1000)
Profile Ball Rail: 30, 3,000 mm Overall Lg, 28 mm Overall Wd, 26 mm Overall Ht, Steel, 6 Rail Holes (MPN 521H30ARL3000)
THOMSON
Profile Ball Rail: 30, 3,000 mm Overall Lg, 28 mm Overall Wd, 26 mm Overall Ht, Steel, 6 Rail Holes (MPN 521H30ARL3000)

More from THOMSON

View all THOMSON parts
Profile Ball Rail: 25, 220 mm Overall Lg, 23 mm Overall Wd, 22.7 mm Overall Ht, Steel, 6 Rail Holes (MPN 521H25A+220)
THOMSON
Profile Ball Rail: 25, 220 mm Overall Lg, 23 mm Overall Wd, 22.7 mm Overall Ht, Steel, 6 Rail Holes (MPN 521H25A+220)
Profile Ball Rail: 45, 570 mm Overall Lg, 45 mm Overall Wd, 37 mm Overall Ht, Steel, 6 Rail Holes (MPN 521H45A+570)
THOMSON
Profile Ball Rail: 45, 570 mm Overall Lg, 45 mm Overall Wd, 37 mm Overall Ht, Steel, 6 Rail Holes (MPN 521H45A+570)
Profile Ball Rail: 20, 820 mm Overall Lg, 20 mm Overall Wd, 19 mm Overall Ht, Steel, 6 Rail Holes (MPN 521H20A+820)
THOMSON
Profile Ball Rail: 20, 820 mm Overall Lg, 20 mm Overall Wd, 19 mm Overall Ht, Steel, 6 Rail Holes (MPN 521H20A+820)
Profile Ball Rail: 35, 1,640 mm Overall Lg, 34 mm Overall Wd, 29.5 mm Overall Ht, Steel (MPN 521H35A+1640)
THOMSON
Profile Ball Rail: 35, 1,640 mm Overall Lg, 34 mm Overall Wd, 29.5 mm Overall Ht, Steel (MPN 521H35A+1640)
Profile Ball Rail: 15, 1,000 mm Overall Lg, 15 mm Overall Wd, 15.7 mm Overall Ht, Steel (MPN 521H15AD+1000)
THOMSON
Profile Ball Rail: 15, 1,000 mm Overall Lg, 15 mm Overall Wd, 15.7 mm Overall Ht, Steel (MPN 521H15AD+1000)
Profile Ball Rail: 15, 1,500 mm Overall Lg, 15 mm Overall Wd, 15.7 mm Overall Ht, Steel (MPN 521H15ARL1500)
THOMSON
Profile Ball Rail: 15, 1,500 mm Overall Lg, 15 mm Overall Wd, 15.7 mm Overall Ht, Steel (MPN 521H15ARL1500)
Profile Ball Rail: 20, 160 mm Overall Lg, 20 mm Overall Wd, 19 mm Overall Ht, Steel, 6 Rail Holes (MPN 521H20A+160)
THOMSON
Profile Ball Rail: 20, 160 mm Overall Lg, 20 mm Overall Wd, 19 mm Overall Ht, Steel, 6 Rail Holes (MPN 521H20A+160)
Profile Ball Rail: 20, 280 mm Overall Lg, 20 mm Overall Wd, 19 mm Overall Ht, Steel, 6 Rail Holes (MPN 521H20A+280)
THOMSON
Profile Ball Rail: 20, 280 mm Overall Lg, 20 mm Overall Wd, 19 mm Overall Ht, Steel, 6 Rail Holes (MPN 521H20A+280)