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TBR30UU Linear Slide Unit Block – 30mm Open Linear Motion Ball Bearing, TBR Series for 3D Printers & CNC

The TBR30UU is a heavy-duty, open-type linear bearing slide unit designed for 30 mm supported optical shafts. Featuring a wide aluminum flange housing and high-precision GCr15 bearing steel, it delivers smooth and stable linear motion with superior load capacity. Perfect for large-format 3D printers, CNC routers, and heavy-duty automated machinery, we provide B2B buyers with fast delivery (5–15 days), OEM/ODM support, and flexible payment options.

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Product overview

The TBR30UU Linear Slide Unit consists of a standard open-type linear ball bearing encased in a small, lightweight, yet highly rigid aluminum alloy case. It is specifically designed to ride on fully supported linear rails (such as TBS30 or SBR30 guide rails). The unique flange shape of the TBR block provides a wider mounting surface compared to standard square blocks, enhancing structural stability and allowing for secure load attachment.

TBR30UU Linear Slide Unit Block 2.jpg

Technical specifications

Ensure proper mounting and system compatibility by referencing the details below:

Item

Specification

Model Number

TBR30UU

Series

TBR Series Linear Motion Ball Bearing Block

Inner Diameter (Bore)

30 mm

Bearing Material

GCr15 Chrome Steel (for the linear bushing)

Housing Material

Aluminum Alloy (anti-corrosion)

Precision Class

P0 / Standard

Shape & Sealing

Flange Type / Open

Quality Standard

ISO9001:2000

SBR vs. TBR: Why choose the TBR30UU?

When designing automated motion systems, engineers often choose between SBR and TBR blocks. The TBR30UU offers distinct mechanical advantages:

  • Flange design: The TBR block features a wider flange with through-hole threading. This allows the block to be mounted securely from either the top-down or bottom-up, offering much greater installation flexibility than the top-down-only SBR block.

  • Higher load stability: Because of its solid aluminum base and wider profile, the TBR block can generally support a slightly higher load capacity and handle lateral forces better than standard square blocks.

  • Smooth travel: The internal open-type linear bearing guarantees low friction and high-speed translation across the supported rail.

Application industries

The 30 mm bore size makes this unit suitable for heavy-duty, large-scale sliding applications. It is frequently specified by OEM manufacturers for:

  • Large-format industrial 3D printers and heated bed movements.

  • Heavy cutting CNC machines and precision machining centers.

  • Tensile testing machines and automated assembly lines.

B2B supply & OEM/ODM services

As a dedicated bearing manufacturer, we fully support the B2B supply chain. If you require custom modifications—such as specific housing finishes, alternative bearing inserts, or customized packaging—our R&D department accepts OEM & ODM requests based on your drawings.

  • Delivery: Normally 5–15 days for ready goods and stock.

  • Payment Terms: 100% T/T, 30% deposit + 70% balance before delivery, and all other standard payment methods supported to accommodate your procurement workflow.

OEM & purchasing FAQ

Q1: Can I use a TBR30UU block on an SBR30 rail?
A: Yes. The internal bore geometry is the same (30 mm), and TBR blocks can be combined with SBR supported rails interchangeably. Just be mindful that the center mounting heights between TBR and SBR blocks differ slightly.

Q2: Does the TBR30UU require lubrication?
A: Yes. Like all linear ball bearings, the internal GCr15 steel balls require regular lubrication with light machine oil or lithium grease to maintain smooth operation and prevent premature wear on the shaft.

Q3: How do I mount my equipment to the TBR30UU?
A: The wide aluminum flange contains four pre-tapped through-holes, allowing you to bolt your equipment directly to the slider from either the top or the bottom.

Q4: Do you supply the matching 30 mm supported rails?
A: Yes, we manufacture and supply the complete linear motion system. If you need the matching supported linear guide rails cut to a specific length, please include those details in your inquiry for a combined quotation.

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