RAA55ANP6Z NSK - RA55 Roller Linear Guide Block

RAA55ANP6Z NSK - RA55 Roller Linear Guide Block

NSK RAA55ANP6Z is a precision roller linear guide block from the NSK RA Series, size 55. It is a standard short block-type carriage in the AN configuration, using four rows of rollers as rolling elements. Key specifications include an overall length of 184 mm, width of 100 mm, mounting height of 80 mm, basic dynamic load rating C of 129 kN and basic static load rating C0 of 330 kN.

Technical data

The RA Series is designed with four rows of rollers and provides load-carrying capability in the principal load directions. Load ratings for the series are specified according to the applicable linear rolling bearing rating methodology.

What does RAA55ANP6Z mean?

The designation RAA55ANP6Z identifies a specific NSK RA Series roller guide block configuration.

RA - NSK RA Series roller linear guide
55 - guide size
AN - standard short block-type carriage
P6 - designation associated with the specified accuracy configuration

The complete designation RAA55ANP6Z should be retained when identifying or replacing the component. Other RA55 blocks may have different body styles, lengths, mounting dimensions or configurations.

NSK RA Series roller linear guide

The NSK RA Series uses rollers rather than balls as its rolling elements. Four rows of rollers operate between the carriage and guide rail.

The roller contact geometry provides a larger contact area than a comparable ball-type rolling element arrangement, making roller linear guides particularly suitable where high load capacity and rigidity are important design requirements.

For the RAA55ANP6Z, the basic dynamic load rating C is 129 kN, while the basic static load rating C0 is 330 kN.

RAA55ANP6Z dimensions

The main carriage dimensions are:

Width W: 100 mm
Overall length L: 184 mm
Block body length L1: 128 mm
Mounting height H: 80 mm

These dimensions are important both when replacing an existing block and when designing a complete linear guide arrangement.

A replacement should not be selected solely from the nominal size 55. Compatibility with the corresponding NSK RA rail and the complete guide configuration must also be verified.

Load ratings

The confirmed basic load ratings for this configuration are:

Basic dynamic load rating C: 129 kN
Basic static load rating C0: 330 kN

Static moment ratings are:

Mr0: 10,200 Nm
Mp0: 7,060 Nm
My0: 7,060 Nm

Static moment ratings are particularly relevant when the guide system is subjected to loads acting away from the guide axis or to pitching, yawing and rolling moments.

Four-row roller construction

The NSK RA Series uses a four-row roller arrangement.

Unlike a ball linear guide, the rolling elements are cylindrical rollers. Their line-contact characteristics provide high rigidity and load-carrying capability, making the RA Series suitable for demanding linear motion systems.

The block and rail form part of a matched linear guide system, so rail compatibility and the complete NSK designation should be considered during replacement.

RAA55ANP6Z vs other RA55 variants

The NSK RA55 size is available in several block configurations, including designations such as:

• RAA55ANP6Z
• RAA55ANK6Z
• RAA55BNP6Z
• RAA55BNK6Z
• RAA55ALP6Z
• RAA55ALK6Z
• RAA55BLP6Z
• RAA55BLK6Z
• RAA55EMP6Z
• RAA55GMP6Z

These variants should not automatically be considered identical or interchangeable. Differences can include block shape, overall length, mounting configuration and other design features.

The complete NSK designation should therefore be checked before ordering a replacement.

Roller guide vs ball guide

RAA55ANP6Z is a roller linear guide block, not a ball-type linear guide carriage.

Rollers provide a larger contact area with the raceways than balls. This construction is used where high rigidity and high load capacity are required.

A ball-type carriage with apparently similar external dimensions should therefore not automatically be considered a direct replacement for the NSK RAA55ANP6Z.

Selection and interchangeability

When selecting an NSK RAA55ANP6Z, verify:

• complete NSK designation,
• RA Series,
• size 55,
• AN block configuration,
• required accuracy configuration,
• preload requirements,
• compatibility with the guide rail,
• mounting dimensions,
• required load ratings,
• required moment ratings,
• sealing configuration,
• lubrication requirements.

The designation RA55 alone is not sufficient to confirm interchangeability.

Applications

NSK RA Series roller guides are intended for precision linear motion systems where load capacity, rigidity and accurate guidance are important.

They can form part of industrial machinery and precision motion systems. The suitability of RAA55ANP6Z for a specific machine should be confirmed from the machine design requirements and the complete linear guide specification.

Installation and operation

The mounting surfaces of both the carriage and guide rail should be clean and correctly prepared. Impacts, contamination of the raceways and damage to sealing components should be avoided during handling and installation.

The block must be used with the appropriate NSK RA Series size 55 guide rail. Correct mounting accuracy, guide alignment and lubrication are important for the performance and service life of the linear guide system.

Alternative designations and search references

This product may also be searched for as:

• NSK RAA55ANP6Z
• RAA55ANP6Z NSK
• RAA55 ANP6Z NSK
• NSK RAA55 ANP6Z
• NSK RA55 ANP6Z
• NSK RA 55
• RA55 NSK
• NSK RA55 roller linear guide
• NSK RA55 linear guide block
• NSK RAA55 linear carriage
• RAA55ANP6Z linear guide carriage
• RAA55ANP6Z roller guide block

FAQ - NSK RAA55ANP6Z

What is NSK RAA55ANP6Z?

NSK RAA55ANP6Z is a size 55 roller linear guide block from the NSK RA Series.

Is RAA55ANP6Z a ball-type linear guide?

No. It uses rollers as rolling elements and belongs to the NSK RA Series of roller linear guides.

What are the dimensions of RAA55ANP6Z?

The main dimensions are 100 mm width, 184 mm overall length and 80 mm mounting height.

What is the dynamic load rating of NSK RAA55ANP6Z?

The basic dynamic load rating C is 129 kN.

What is the static load rating?

The basic static load rating C0 is 330 kN.

How many rows of rollers does the NSK RA Series use?

The construction uses four rows of rollers.

Are RAA55ANP6Z and RAA55ANK6Z the same?

No. They are different RA55 configurations. The complete designation and construction should be checked before substitution.

Can any NSK size 55 linear guide block replace RAA55ANP6Z?

No. The series, block configuration, rail compatibility, mounting dimensions, accuracy and other system parameters must be verified.

NSK RAA55ANP6Z - key information

NSK RAA55ANP6Z is a four-row roller linear guide block from the RA Series, size 55. It has a 100 mm width, 184 mm overall length and 80 mm mounting height. The basic dynamic load rating C is 129 kN and the basic static load rating C0 is 330 kN. Full designation and rail compatibility should be verified when selecting a replacement.

Available from simmering.pl, a specialist supplier of bearings, linear motion components and industrial technical parts. Stock in Poland with worldwide shipping.