GQZ FF-3525 Single Row Flat Cage Linear Needle Roller Assembly 3.5×25×75mm For Planar Linear Sliding Guide

FF-3525 belongs to standard FF series flat linear needle roller assembly. It is composed of cylindrical needle rollers installed inside a flat nylon retainer, single row arrangement.

This component is installed between two flat raceway surfaces to achieve reciprocating linear sliding movement. It only bears vertical radial load and cannot be used for rotary motion. The retainer evenly separates rollers to avoid collision friction and maintain stable sliding performance.

FF stands for single-row structure; FFZW represents double-row type. Widely used for precision moulds, automation linear guide structures, testing equipment and low-speed flat reciprocating machinery.

Formal quotation will be sent within 24 hours upon your inquiry.

Model

FF-3525

Overall length L

75 mm

Assembly width b

25 mm

Roller diameter Dw

3.5 mm

Effective roller length Lw

17.8 mm

Roller quantity

10 pcs

Net weight

approx 0.0166 kg

Structure

Single row flat needle roller with nylon cage

Roller material

GCr15 bearing steel

Cage material

Reinforced nylon

Basic dynamic load Cr

64700 N

Basic static load C0r

177300 N

Complete dimension drawings and load data available on request.

1. Flat strip compact structure, saves installation space for planar sliding mechanisms
2. Excellent load capacity under low-speed reciprocating linear motion
3. Nylon retainer separates each roller, reduces friction and prevents roller disorder
4. Standard industry dimension, fully interchangeable with mainstream brand FF series
5. Both ends with connecting notch, multiple assemblies can be spliced to extend sliding stroke
6. Customizable: stainless steel roller version, steel cage, OEM laser marking, P6 precision grade

• Precision mould planar sliding and mold guiding structures
• Automation equipment reciprocating linear sliding guide assemblies
• Precision testing instruments and optical machinery
• Light-duty machine tool flat guide rail components
• Low-speed heavy-load reciprocating flat sliding mechanisms

• 25 years professional bearing manufacturer, products exported globally.
• Strict dimensional sorting for needle rollers to guarantee sliding smoothness.
• Stable nylon cage forming process, not easy to deform under load.
• 24-hour technical support for length combination and model selection.
• Ample stock for machinery distributors.
• Precise dimensions and stable service performance.

• GCr15 roller quenching & tempering hardness inspection
• Needle roller dimensional tolerance and surface roughness testing
• Cage flatness and assembly clearance inspection
• Whole set sliding smoothness test

If you need FF-3525 flat needle roller assemblies:

Send inquiry to obtain below supports:

• Quick quotation within 24 hours
• Double row FFZW series alternative consultation
• Stainless steel roller version solution
• Competitive factory direct price
  Contact our sales team for full datasheets and formal offer.