REXROTH R044489401

Rexroth Miniature Linear Guide Block R044489401

Description

This is a new-in-box Bosch Rexroth Miniature Ball Runner Block, part number R044489401. As part of the NRII series, this high-precision component is designed for demanding linear motion applications where space is limited but accuracy is critical. It provides smooth, low-friction movement and high rigidity, making it suitable for automation, medical devices, and semiconductor manufacturing equipment.

Specifications

• Manufacturer: Bosch Rexroth
• Part Number: R044489401
• Series: NRII Miniature Ball Rail System
• Type: Runner Block (Miniaturwagen)
• Size: 8
• Format: Wide, Normal Length
• Preload Class: C0 (Preload-free)
• Accuracy Class: N (Normal)
• Material: Carbon Steel

Label Info

• MNR: R044489401
• FD: 958
• CS:I.N. 3055869

Application

Ideal for use in pick-and-place robots, precision measurement devices, 3D printers, and compact automation modules requiring precise and repeatable linear guidance.

Country of Origin

Made in Romania.

CO2 Impact

By choosing this new-surplus component, you are preventing the emission of approximately 0.1 kg of CO2. This saving is equivalent to charging a smartphone 12 times, contributing to a more sustainable industrial environment.

Availability

This item is in stock and ready for immediate dispatch. Order now from spareparts2day for expert support and fast delivery.

FAQ

What type of rail is compatible with this R044489401 runner block?

This size 8 runner block is designed to be used with a corresponding Rexroth size 8 miniature guide rail from the NRII series. Ensure the rail model matches for proper fit and performance.

What does the preload class C0 mean?

Preload class C0 indicates that the runner block is “preload-free”. This means there is a minimal, defined clearance between the balls and the raceways, resulting in very low friction and smooth motion, which is ideal for applications with low external loads.

How should this runner block be lubricated for optimal performance?

The block is typically supplied with an initial preservation oil. For long-term operation, it should be lubricated with a suitable low-viscosity grease (e.g., DIN 51825 KP2K-20) or oil. Rexroth provides detailed lubrication guidelines in their technical documentation for the NRII series.

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Last Update: Friday, March 13, 2026