1. Product Overview

The original THK HSR15R is a size-15 narrow square-type LM guide block from the THK HSR full-ball linear guide series. Its compact width and tapped top mounting holes make it suitable for machine tables and automation assemblies where installation space is limited.

The HSR series provides equal load ratings in the radial, reverse-radial and lateral directions, supporting stable and rigid linear motion in CNC machines, machine tools, precision equipment and industrial automation systems.

This is a Block-only product page. The matching THK HSR15 LM rail is not included unless it is separately listed in the quotation.

2. Model Identification

• Brand: THK
• Series: HSR
• Base Model: HSR15R
• Nominal Size: 15
• Block Design: Narrow square type
• Block Length Type: Standard length
• Mounting Direction: Bolts mounted from above
• Loading Method: Four-way equal load

HSR15R is the standard-length R-type block. It must not be confused with HSR15LR, which is the longer version with a different overall length, mounting pitch, weight and load rating.

3. Key Technical Specifications

4. Official Dimension Drawing and Detailed Dimensions

Refer to the official THK HSR15R dimension drawing in the product image gallery when checking machine mounting space, mounting-hole positions and lubrication-port clearance.

The 56.6 mm overall block length applies to the standard UU or SS sealing arrangement. Some optional lubrication or contamination-protection accessories may increase the total block length.

5. Load Ratings

Detailed Static Moment Ratings

• MA, one block: 0.0945 kN·m
• MA, two close-contact blocks: 0.527 kN·m
• MB, one block: 0.0945 kN·m
• MB, two close-contact blocks: 0.527 kN·m
• MC, one block: 0.0998 kN·m

The two-block MA and MB values apply when two LM blocks are installed in close contact. Actual service life also depends on operating load, block spacing, rail spacing, mounting rigidity, speed, lubrication and shock conditions.

6. Matching Rail and Supply Scope

• Official Matching Rail: THK HSR15 LM Rail
• Matching Nominal Size: 15
• Supply Scope: One original THK HSR15R LM guide block
• Rail Included: No, unless separately listed in the quotation

For replacement orders, please provide a clear photograph of the complete model marking or the equipment BOM. Current availability and delivery time will be confirmed according to the required quantity and configuration.

7. Standard and Optional Configurations

C0 medium preload is not available for HSR15R. Optional configurations are supplied according to the complete THK order designation and should not be treated as standard stock specifications.

8. Selection and Replacement Notes

• Confirm whether the existing block is HSR15R or the longer HSR15LR before ordering.
• Use HSR15R only with the official matching THK HSR15 LM rail and the correct system configuration.
• Do not identify a replacement only from nominal size, assembly height or rail width.
• Clean the mounting reference surfaces and do not dismantle the end plates or ball-retaining structure.
• Provide the complete model marking or a clear product photograph so the required configuration can be verified.

9. Frequently Asked Questions

10. Request a Quote

Please provide the quantity, complete model marking or a clear product photo, and the delivery country and postcode.