THK HSV35 R1SS - Linear Ball Guide Block

Technical Specifications - THK HSV35 R1SS

The dimensions 70x109.4x55 mm must be interpreted correctly. The 55 mm height refers to the assembled linear guide system, including the block and rail, rather than the height of the block alone.

The catalog load ratings are associated with the HSV35 configuration and must be evaluated against actual operating loads, mounting conditions and the required service life.

What Does THK HSV35 R1SS Mean?

THK - Manufacturer

THK is a Japanese manufacturer specializing in linear motion technology, including linear ball guides, guide blocks, profiled rails and precision mechanical components.

Its linear motion systems are designed to provide controlled straight-line movement while supporting loads acting in multiple directions.

HSV - Linear Guide Series

HSV identifies a series of profiled linear ball guides manufactured by THK.

The HSV series uses a four-row ball arrangement in which the rolling elements circulate through the guide block.

The recirculating ball construction enables linear movement along a compatible profiled guide rail.

Unlike conventional rotary bearings, this system is designed to guide translational rather than rotational movement.

35 - Linear Guide Size

The number 35 identifies the nominal size within the HSV series.

For the HSV35R configuration, the block has a width of 70 mm and an overall length of 109.4 mm.

The assembled height with the corresponding rail is 55 mm.

The compatible rail has a width of 34 mm.

The number 35 is a size designation and should not be interpreted as a bearing bore diameter.

R - Narrow Block Configuration

The letter R identifies the narrow block configuration.

The block has threaded mounting holes on its upper surface, allowing machine components to be attached directly from above.

Compared with the wider flange-type HSV35C, the R configuration is suitable for installations where lateral mounting space is limited.

1SS - Block and Sealing Designation

The 1SS designation identifies the specified block configuration and sealing arrangement.

The SS element indicates a sealed version intended to limit the entry of contaminants into the rolling contact system.

The sealing components help protect the balls, raceways and recirculation channels against dust and foreign particles.

The complete 1SS designation should be retained when identifying or ordering the block.

Construction of THK HSV35 R1SS

Linear Guide Block Body

The HSV35R block has a narrow body measuring 70 mm in width and 109.4 mm in overall length.

Four threaded M8x12 mounting holes are located on its upper surface.

The mounting hole spacing is 50 mm longitudinally and 50 mm transversely.

This configuration allows the moving machine component to be secured directly to the block.

Correct mounting surface geometry is important for maintaining the alignment of the linear guide assembly.

Four Rows of Recirculating Balls

The block incorporates four rows of balls running along specially profiled raceways.

During linear movement, the balls roll through the loaded contact zones and return through internal recirculation channels.

The four-row configuration allows the guide system to accommodate loads acting in different directions.

Load distribution depends on the arrangement of the blocks, rail alignment and the external forces applied to the moving structure.

Ball Recirculation System

The recirculation system consists of loaded raceway sections, return channels and end components that redirect the balls.

As the block travels along the rail, the balls continuously circulate within the assembly.

This allows the block to move along the usable length of the rail without the rolling elements reaching a fixed travel limit inside the block.

Sealing Arrangement

The SS configuration incorporates sealing components designed to reduce contamination of the internal rolling system.

The seals help protect the raceways and rolling elements during operation.

In heavily contaminated environments, additional external protection may be required, such as bellows, covers or machine guarding.

Lubrication System

The block is designed for relubrication through a grease nipple.

Lubrication reduces friction and wear at the contact surfaces between the balls and raceways.

The lubricant type and maintenance interval should be selected according to THK recommendations and the operating conditions of the machine.

Load Capacity and Moment Resistance

The four-row ball arrangement of the HSV series is designed to accommodate loads acting in several directions.

For the HSV35 configuration, the following load ratings are specified:

The moment values refer to a single guide block.

The basic dynamic load rating is used in calculations of nominal service life under specified conditions.

The basic static load rating is used when assessing resistance to permanent deformation under static loading.

The permissible static moments describe the resistance of the guide block to moment loads about the relevant axes.

These catalog values must not be interpreted as universally permissible operating loads.

Correct selection requires consideration of actual forces, load direction, the number of guide blocks, block spacing and the expected service life.

THK HSV35 R1SS vs Other HSV35 Variants

HSV35R vs HSV35C

Both variants belong to the same nominal linear guide size, but they differ in their mounting geometry and installation dimensions.

They should not be considered direct replacements without checking the machine structure and mounting arrangement.

HSV35R vs HSV35LR

The HSV35LR version features an extended block body.

Its overall length is 134.8 mm, compared with 109.4 mm for HSV35R.

The longer configuration has different mounting geometry and requires additional installation space.

Selection depends on the required load capacity, stiffness, available space and the distribution of forces acting on the guide system.

Alternative Designations and Reference Numbers

The product may appear under the following notation variants:

• THK HSV35 R1SS

• HSV35 R1SS THK

• THK HSV35R1SS

• HSV35R1SS

• HSV35 R 1SS

• THK HSV35 R1SS BLOCK

These are alternative ways of writing or identifying the same product designation, not confirmed cross-reference numbers from other manufacturers.

No unverified equivalent part numbers are assigned.

Selection and Interchangeability

Before purchasing THK HSV35 R1SS, verify:

1. Complete designation HSV35 R1SS.

2. Manufacturer THK.

3. Compatibility with the HSV35 guide rail.

4. Narrow R-type block configuration.

5. Block width of 70 mm.

6. Overall block length of 109.4 mm.

7. Assembly height of 55 mm.

8. Mounting hole spacing of 50x50 mm.

9. M8x12 threaded mounting holes.

10. Required sealing arrangement.

11. Accuracy and load requirements.

12. Lubrication and operating conditions.

Matching nominal dimensions do not guarantee interchangeability between linear guide blocks from different manufacturers.

Differences in raceway geometry, rail profiles, mounting hole locations, tolerances and internal construction may prevent proper operation.

A guide block identified as size 35 is not necessarily compatible with a THK HSV35 rail.

Applications of THK HSV35 R1SS

Profiled linear ball guides of the HSV series are intended for machine assemblies requiring controlled linear movement.

Typical applications for this type of construction include:

• Industrial linear motion mechanisms.

• Machine positioning axes.

• Production automation equipment.

• Linear transfer mechanisms.

• Moving machine tables.

• Industrial handling systems.

• Equipment requiring multidirectional load support.

These are typical applications of profiled linear ball guide technology, not confirmed equipment-specific applications of the exact HSV35 R1SS designation.

The block should be selected according to the actual operating loads, required accuracy, installation conditions and service life expectations.

Installation and Maintenance

Mounting Surface Preparation

Clean the mounting surfaces before installing the rail and block.

Check the flatness, alignment and condition of the reference surfaces.

Contamination between the rail and mounting surface may cause alignment errors and additional loading of the rolling elements.

Block Mounting

The HSV35 R1SS block has four M8x12 threaded mounting holes.

Fasteners should be selected according to the machine design and THK installation recommendations.

Correct engagement length and tightening procedures must be observed.

Installation on the Guide Rail

The block must be installed on the appropriate THK HSV35 rail according to the manufacturer's instructions.

Avoid removing the block from the rail without a suitable retaining device.

Improper handling may cause balls to escape from the recirculation system.

Lubrication

The block is designed for periodic relubrication.

Lubricant selection and maintenance intervals should account for operating load, travel speed, temperature and environmental contamination.

Storage

Store the block in a clean, dry environment.

Protect it from corrosion, impact damage and deterioration of the sealing components.

FAQ - THK HSV35 R1SS

1. What is THK HSV35 R1SS?

THK HSV35 R1SS is a profiled linear ball guide block belonging to the THK HSV35 series. It features a narrow R-type body and four rows of recirculating balls.

2. What are the dimensions of THK HSV35 R1SS?

The block is 70 mm wide and 109.4 mm long. The assembled height, including the compatible guide rail, is 55 mm.

3. Which guide rail is compatible with HSV35 R1SS?

The block is designed to operate with the corresponding THK HSV35 profiled guide rail, which has a nominal width of 34 mm.

4. What does R mean in HSV35 R1SS?

R identifies the narrow block configuration with threaded mounting holes accessible from above.

5. What does SS mean?

SS identifies the sealing arrangement used to help protect the rolling elements and raceways against contamination.

6. Can THK HSV35 R1SS be relubricated?

Yes. The block is designed for relubrication through a grease nipple. The lubricant and maintenance interval must be selected according to operating conditions.

7. Are HSV35R and HSV35C interchangeable?

Not without checking the installation dimensions. HSV35R has a narrow body, while HSV35C has a wider flange-type configuration. Their mounting dimensions and assembled heights differ.

8. Is the guide rail included with THK HSV35 R1SS?

The HSV35 R1SS designation identifies the guide block. The guide rail is a separate component with its own designation and specified length. The exact scope of supply must be checked in the individual product offer.

THK HSV35 R1SS - Key Technical Information

THK HSV35 R1SS is a four-row recirculating ball guide block from the THK HSV35 linear guide series. The R designation identifies a narrow block, while SS specifies the sealing arrangement. The block measures 70 mm in width and 109.4 mm in length, with an assembled height of 55 mm. It operates on a compatible THK HSV35 profiled rail.

The THK HSV35 R1SS linear guide block is offered by simmering.pl, a specialist supplier of rolling bearings, linear motion components and industrial mechanical parts.

TG Ersatzteile Polska Sp. z o.o. operates a warehouse in Lublin, Poland, supplying engineering companies, industrial maintenance departments, machine builders and international B2B customers.

Products are shipped from stock in Poland, with shipping options available throughout Europe and worldwide.