Product Overview
Roller bearing linear guide rails in JSM's HR Series use four rows of recirculating cylindrical rollers arranged at a 45° contact angle. The structure supports radial, reverse-radial and lateral loads, providing guidance for machine assemblies working under substantial forces.
The series includes square, low-profile square and flange blocks, allowing equipment builders to select a configuration around the available installation space and mounting layout.
Models and Specifications
|
Item |
Specification |
|
Series |
HR Series |
|
Square blocks |
HRH-CA / HRH-HA |
|
Low-profile square blocks |
HRL-CA / HRL-HA |
|
Flange blocks |
HRW-CC / HRW-HC |
|
Nominal sizes |
15, 20, 25, 30, 35, 45, 55, 65 |
|
Load types |
C: heavy load; H: extra-heavy load |
|
Catalogue rail length range |
100–4000 mm, subject to model and configuration |
|
Non-interchangeable configurations |
Accuracy: H, P, SP, UP; preload: Z0, ZA, ZB |
|
Interchangeable configurations |
Accuracy: H, P; preload: Z0, ZA |
|
Rail mounting |
Top or bottom mounting, according to specification |
Product Features
Roller Contact for Rigidity
Line contact between the rollers and raceways helps limit elastic deformation under working loads. Preload can be selected according to the required rigidity and operating conditions.
Block Layouts for Different Mounting Requirements
HRH square blocks suit installations with limited mounting width. HRL blocks reduce assembly height, while HRW flange blocks provide a wider mounting interface and support top or bottom block fastening.
Protection Options for the Working Environment
The catalogue includes sealing arrangements with double wipers and metal scrapers. Select the protection configuration according to exposure to chips, dust and machining fluids.
Application Scenarios
CNC Machining Centres
For feed axes carrying worktables or machining units. Cutting forces and the position of the load should be included in selection.
Grinding and EDM Equipment
For guided machine slides. The configuration should account for machining debris, fluid exposure and the required positioning accuracy.
Large Gantry Machine Tools
For travelling gantries and heavy moving assemblies, where rail spacing and overturning moments influence the guide arrangement.
Heavy-Duty Automation
For transfer and positioning units carrying substantial payloads, including assemblies with off-centre loads or frequent acceleration.
Manufactured by JSM
Zhejiang Jinshanmen Transmission Technology Co., Ltd. manufactures linear guides in a 20,000 m² self-owned factory in China. Our production facilities include precision grinding equipment and CNC machining centres, with an annual capacity of approximately 800,000 metres of linear guide rails across our product range.
For equipment manufacturers and distributors sourcing roller bearing linear guide rails, JSM provides OEM/ODM services and direct communication on configuration requirements. Our operations are supported by ISO 9001, ISO 14001 and ISO 45001 management systems.
FAQ
Q. Can these guides replace another brand's products without changing the machine?
The same nominal size does not guarantee a direct replacement. Send the existing model and dimensional drawing for comparison of assembly height, mounting holes, rail profile and load requirements before purchasing.
Q. Can I order only a replacement block for an existing JSM rail?
Provide the original order number or full model code first. A separate replacement depends on whether the existing guide is an interchangeable configuration. Matched assemblies require review before a replacement approach is confirmed.
Q. How should lubrication intervals be determined?
There is no single interval suitable for every installation. Travel distance, operating speed, load, lubricant and contamination exposure should be considered when preparing a maintenance schedule.
Q: Can I confirm suitability without a complete machine drawing?
For an initial review, provide the mounting dimensions, moving mass, travel stroke, speed and load position. Additional information may be needed before the final configuration can be confirmed.
Q: What are the minimum order quantity and delivery time?
These should be confirmed for the specific model, quantity and production requirements. Include your required delivery date in the enquiry so JSM can check availability and scheduling.
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