SJ-SBR Inner Copper Rail Blocks — Sizes & Specifications
The SJ-SBR series is the rail block version of the steel-shell, inner-copper linear bushing, made to run on SBR supported rails for long-travel axes. BPK supplies SJ-SBR10 to SJ-SBR50 across the standard rail range, factory-direct from Yandian, Shandong, for importers, distributors and OEM buyers.
Standard sizes
| Model | Shaft d (mm) | |
|---|---|---|
| SJ-SBR10 | 10 | Inquiry |
| SJ-SBR12 | 12 | Inquiry |
| SJ-SBR13 | 13 | Inquiry |
| SJ-SBR16 | 16 | Inquiry |
| SJ-SBR20 | 20 | Inquiry |
| SJ-SBR25 | 25 | Inquiry |
| SJ-SBR30 | 30 | Inquiry |
| SJ-SBR35 | 35 | Inquiry |
| SJ-SBR40 | 40 | Inquiry |
| SJ-SBR50 | 50 | Inquiry |
Model notation identifies a family, not a fixed size. Please confirm bore diameter, outer diameter, overall length, mounting, sealing, material, and load requirements with your drawing.
Every model above links straight to the inquiry form with the model prefilled — send your quantity and destination, and we prepare the quotation.
Options & matching parts
Matching SBR supported rails, standard SBR blocks and the housed SJ-SCS block are supplied from the same factory, so a complete axis can ship in one order.
Ordering from BPK
Samples first if you need to check fit and quality; bulk and OEM orders (your logo, your box) supported. MOQ from 1 piece on standard sizes.
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