INA KWVE30-B-L-V2-G4 90x127x42 - Linear Guide Carriage

INA KWVE30-B-L-V2-G4 90x127x42 mm - Four-Row Linear Ball Bearing Carriage

INA KWVE30-B-L-V2-G4 is a four-row recirculating ball linear guide carriage manufactured by Schaeffler under the INA brand. It belongs to the KWVE30-B series and features an extended-length L design, nominal carriage width of 90 mm, overall length of 127 mm and system height of 42 mm. The V2 suffix identifies the preload class, while G4 specifies the accuracy class. The carriage is designed for precise linear motion on a compatible profiled guide rail.

Characteristics of INA KWVE30-B-L-V2-G4

The INA KWVE30-B-L-V2-G4 is a profiled rail linear guide carriage incorporating four rows of recirculating balls.

Its rolling element arrangement enables the carriage to support loads acting in different directions and moments generated during machine operation.

The extended-length L version provides a longer carriage body than the corresponding standard-length design.

This construction is used in linear motion systems requiring controlled movement, accurate guidance and appropriate load distribution.

Key characteristics:

• Manufacturer: INA - a brand of the Schaeffler Group.

• Series: KWVE30-B - profiled rail linear ball bearing carriage.

• Size: 30 - nominal linear guide system size.

• L design - extended-length carriage.

• Four-row ball arrangement - recirculating rolling elements.

• Full-ball construction - without a ball chain.

• V2 preload class - medium preload.

• G4 accuracy class - defined precision grade within the INA system.

• Flanged carriage design - intended for mounting a moving machine component.

• Relubrication capability - designed for maintenance lubrication.

• End and longitudinal seals - help protect the rolling contact areas against contamination.

Technical Specifications

The dimensions correspond to the INA KWVE30-B-L carriage configuration.

Important: The 42 mm dimension is the system height H for the carriage installed on its compatible guide rail. It should not automatically be interpreted as the standalone height of the carriage body.

What Does INA KWVE30-B-L-V2-G4 Mean?

The designation identifies the linear guide carriage family, size, construction version, carriage length, preload and accuracy class.

KWVE - Recirculating Ball Linear Guide Carriage

KWVE identifies a family of INA linear guide carriages incorporating recirculating balls.

The carriage moves along a profiled guide rail, with the balls circulating through internal return channels.

This arrangement enables repeated linear movement over the usable length of the guide rail.

30 - Linear Guide Size

The number 30 identifies the nominal size of the linear guide system.

It does not indicate the ball diameter or the diameter of a shaft.

The carriage must be matched with a compatible profiled guide rail of the appropriate INA series and size.

B - Design Version

The letter B identifies a specific design generation within the KWVE product family.

This designation is important when verifying compatibility with the associated rail and other system components.

L - Extended-Length Carriage

The suffix L identifies the long carriage version.

For this configuration, the overall carriage length is 127 mm.

Compared with a standard-length carriage, the extended design provides a longer bearing arrangement.

The actual effect on load capacity, stiffness and permissible moments must be determined from the manufacturer's specifications for the complete assembly.

V2 - Preload Class

V2 identifies the medium preload class.

Preload influences the internal operating conditions of the linear guide, including stiffness, clearance and resistance to movement.

The appropriate preload depends on the required positioning accuracy, applied loads, mounting accuracy and operating conditions.

V2 is not an accuracy class.

G4 - Accuracy Class

G4 specifies the accuracy class within the INA linear guide designation system.

The accuracy class relates to the dimensional and running accuracy requirements of the guide system.

It should not be confused with preload, carriage length or load capacity.

Four-Row Recirculating Ball Construction

The INA KWVE30-B-L-V2-G4 incorporates four rows of balls operating between the carriage raceways and a compatible profiled rail.

During movement, the balls carry loads through the working zones and return through internal recirculation channels.

Carriage Body

The carriage body provides the structural connection between the moving machine component and the rolling element system.

Its mounting surfaces and fastening points allow the carriage to be integrated into a linear motion assembly.

Four Rows of Balls

The four-row rolling element arrangement allows the guide system to accommodate loads and moments acting in different directions.

The actual permissible loads depend on the complete guide arrangement, rail support, number of carriages, mounting conditions and operating environment.

Recirculating Ball System

The balls circulate continuously through the internal raceways and return channels as the carriage moves along the rail.

This design provides rolling contact guidance and generally lower friction than conventional sliding arrangements.

Correct lubrication and protection against contamination are essential for reliable operation.

End and Longitudinal Seals

The carriage incorporates sealing elements intended to reduce the entry of contaminants into the rolling contact zones.

The seals also help retain lubricant within the carriage.

They do not provide complete protection against severe abrasive contamination, pressurised liquids or aggressive industrial environments.

Mounting Dimensions

The following dimensions are associated with the INA KWVE30-B-L carriage configuration.

Before manufacturing mounting plates or modifying an existing machine, consult the complete Schaeffler dimensional drawing.

The drawing should be used to verify mounting hole positions, reference surfaces, fastening requirements and dimensional tolerances.

INA KWVE30-B-L-V2-G4 Compared with Other Variants

Differences in carriage length, preload and accuracy can affect the performance of the complete linear guide assembly.

A standard-length carriage should not automatically replace the extended-length version without checking load ratings, stiffness, mounting dimensions and available installation space.

Typical Applications of INA Linear Guide Carriages

Four-row recirculating ball linear guide carriages are used in industrial machinery requiring controlled linear motion.

Typical application areas include:

• CNC machine tools.

• Industrial production machinery.

• Automated manufacturing equipment.

• Assembly systems.

• Precision positioning mechanisms.

• Linear motion axes.

• Packaging machinery.

• Industrial handling systems.

• Machine structures requiring accurate linear guidance.

These are general applications of profiled rail linear guide systems and do not establish confirmed compatibility with specific machine models.

Selection and Interchangeability

Before purchasing or replacing INA KWVE30-B-L-V2-G4, verify the requirements of the complete linear guide system.

Important selection criteria include:

1. Full designation KWVE30-B-L-V2-G4.

2. Nominal guide size 30.

3. Extended-length L version.

4. V2 preload class.

5. G4 accuracy class.

6. Carriage width of 90 mm.

7. Carriage length of 127 mm.

8. System height of 42 mm.

9. Compatibility with the installed profiled rail.

10. Mounting hole positions and fastening requirements.

11. Required load and moment ratings.

12. Lubrication and environmental protection requirements.

Carriages from different manufacturers with similar nominal dimensions are not automatically interchangeable.

Differences in rail geometry, raceway profile, preload, accuracy and mounting dimensions may prevent direct replacement.

Installation and Maintenance Recommendations

Before installation, inspect the guide rail and mounting surfaces for cleanliness, dimensional accuracy and damage.

Install the carriage according to the Schaeffler technical instructions, observing the recommended fastening sequence and tightening torques.

Avoid impacts, misalignment and damage to the rolling element recirculation system.

Do not remove the carriage from the rail without appropriate protection for the rolling elements.

Where specified, use the manufacturer's transport or mounting sleeve.

During operation, maintain adequate lubrication and keep the guide rail free from contaminants.

Relubrication intervals depend on applied loads, travel distance, operating speed, stroke length, environmental conditions and lubricant type.

Alternative Designations and Search References

The product may be identified using the following formats:

• INA KWVE30-B-L-V2-G4

• KWVE30-B-L-V2-G4 INA

• KWVE 30-B-L-V2-G4

• INA KWVE30 B L V2 G4

• INA KWVE30-B-L linear carriage

• INA size 30 linear guide carriage V2 G4

• Four-row linear ball bearing carriage KWVE30-B-L-V2-G4

• Schaeffler INA KWVE30-B-L-V2-G4

Alternative search formats should not be treated as independently confirmed manufacturer part numbers.

FAQ - INA KWVE30-B-L-V2-G4

1. What is INA KWVE30-B-L-V2-G4?

It is a four-row recirculating ball linear guide carriage from the INA KWVE30-B series, featuring an extended-length design, V2 preload and G4 accuracy class.

2. What are the dimensions of the carriage?

The nominal carriage width is 90 mm, the overall length is 127 mm and the system height is 42 mm.

3. What does the L suffix mean?

L identifies the extended-length carriage version, which has a longer body than the corresponding standard-length configuration.

4. What does V2 mean?

V2 identifies the medium preload class. Preload influences the stiffness and internal operating conditions of the linear guide system.

5. What does G4 mean?

G4 identifies the accuracy class within the INA designation system. It relates to the dimensional and running accuracy requirements of the guide.

6. Does the carriage contain four rows of balls?

Yes. The carriage uses a four-row recirculating ball arrangement.

7. Does INA KWVE30-B-L-V2-G4 require lubrication?

Yes. Proper lubrication is essential for the performance and service life of the recirculating ball system. The carriage is designed to allow relubrication.

8. Can a linear carriage from another manufacturer replace this INA model?

Not without technical verification. Rail compatibility, mounting dimensions, preload, accuracy, load ratings and operating conditions must all be checked.

INA KWVE30-B-L-V2-G4 - Key Technical Information

INA KWVE30-B-L-V2-G4 is an extended-length, four-row recirculating ball linear guide carriage from the KWVE30-B series. It has a nominal width of 90 mm, length of 127 mm and system height of 42 mm. The V2 designation specifies medium preload, while G4 identifies the accuracy class. The carriage is designed for compatible INA profiled guide rails and supports relubrication.

The product is available through simmering.pl, a specialist supplier of linear motion components, rolling bearings and industrial sealing products.

With warehouse operations in Lublin, Poland, simmering.pl supplies industrial maintenance departments, machine manufacturers and international B2B customers, with worldwide shipping options.