Double Direction Thrust Needle Roller Bearing ZARF2575- TV ZARF2575TN Cylindrical Bearing

1. Product Overview

ZARF2575-TV and ZARF2575TN are fully interchangeable high-precision combined needle roller & axial cylindrical roller bearings, unified mounting dimension d=25mm, D=75mm, overall width B=62mm. Two part codes represent the same bearing with different marking standards.

Model suffix explanation:

• TV: Solid brass machined cage for needle roller section, high rigidity, anti-deformation under continuous high load;
• TN: Glass fiber reinforced nylon injection cage, lightweight, low friction for medium load high-speed operation.

Integrated composite structure combines radial needle roller unit and bidirectional axial cylindrical roller unit in one single housing, simultaneously bear heavy radial load and bidirectional axial preload, ultra-high rigidity positioning performance. All rolling elements and rings adopt through-hardened GCr15 bearing steel, ultra-precision grinding and superfinishing process, tiny dimensional tolerance, low vibration and high positioning accuracy. Widely used for CNC machine tool ball screw support, automation linear drive module, precision testing equipment rotary positioning unit and semiconductor precision transmission assemblies.

2. Technical Specifications

Model: ZARF2575-TV / ZARF2575TN 100% interchangeable
Basic dimension: Inner bore d=25mm, Outer diameter D=75mm, Total width B=62mm
Structure: Combined bearing, radial needle roller + double direction axial cylindrical roller integrated unit
Ring material: GCr15 high carbon chromium bearing steel, full quenching
Cage options: TV = solid brass cage; TN = PA66 glass fiber reinforced nylon cage
Standard precision grade: P4; optional P2 ultra-precision for ultra-high precision equipment
Standard clearance: CN normal clearance, C3 enlarged clearance customizable
Minimum shaft fillet radius r=1.5mm
Operating temperature range: -30℃ ~ 120℃
Net weight: 0.74kg
Basic dynamic radial load Cr: 48.5kN
Basic static radial load C0r: 72kN
Basic dynamic axial load Ca: 63kN
Basic static axial load C0a: 142kN
Grease limiting rotation speed: 3600 r/min
Complete installation drawings, screw preload matching guide and high precision long-cycle durability test reports can be provided upon customer request.

3. Core Advantages

1. ZARF2575-TV and ZARF2575TN share identical outline dimension and load parameters, fully interchangeable for replacement, customers can select cage material according to actual load and speed conditions.
2. One-piece composite integrated design, realize radial and bidirectional axial bearing capacity at the same time, simplify machine tool screw support structure, reduce total number of assembly parts and assembly working hours.
3. Ultra-high rigidity rolling contact structure, small elastic deformation under heavy preload, guarantee long-term stable positioning accuracy of ball screw feed system, effectively improve machining precision of CNC equipment.
4. Dual optional cage materials: brass TV version suitable for 24h continuous heavy load harsh working conditions; nylon TN version lightweight low friction for medium load high-speed precision transmission.
5. Ultra-precision raceway superfinishing, uniform load distribution on all rolling elements, low running noise, small temperature rise during long-time continuous high-speed reciprocating operation.
6. Full customizable service support: P2 ultra-precision grade, high temperature resistant special grease filling, OEM laser marking on outer ring, neutral export wooden case packaging.
7. Separable inner ring design, convenient independent preload adjustment during screw assembly, easy disassembly and maintenance for machine tool after-sales repair.
8. Compact overall outline layout, occupy small installation space, perfect matching narrow screw support housing of small and medium-sized CNC machining centers.

4. Application Scenarios

ZARF2575 series combined needle axial roller bearing is core high-precision support spare part for automation and precision machine tool equipment:

• CNC machining center, lathe ball screw fixed end support bearing assemblies
• Automation linear module heavy load rotary positioning transmission units
• Precision inspection instrument, optical testing equipment high rigidity rotary support positions
• Semiconductor processing equipment miniature precision screw drive assemblies
• Small grinding machine, engraving machine feed shaft high precision support components

Aftermarket interchangeable 25mm bore ZARF series combined needle axial roller bearing
Cost-effective high rigidity precision bearing solution for machine tool OEM manufacturers, automation equipment factories and precision transmission bulk matching suppliers.

5. Why Choose GQZ Bearing

25 years professional manufacturing experience for ZARF series precision combined needle axial roller bearings including ZARF2575-TV & ZARF2575TN
Two model numbers fully dimensionally interchangeable with international standard ZARF composite bearings, consistent precision grade, load rating and installation tolerance indicators.
Complete OEM & ODM customization service supporting P2 ultra-precision upgrade, special high temperature lubricant filling and customized surface marking service.
Full strict pre-delivery inspection: GCr15 ring hardness test, raceway surface roughness inspection, cage deformation resistance test, high preload long-cycle rotation aging test.
Professional combined precision bearing engineering team provides ball screw preload adjustment and shaft housing matching installation technical guidance within 24 hours.
Stable mass production lines with favorable bulk wholesale prices for long-term CNC machine tool manufacturers, automation equipment suppliers and precision testing equipment factories.
We focus on integrated radial-axial high rigidity composite bearing design, dual cage material optional scheme, high precision long service life performance and long-term win-win cooperation with global precision machinery transmission spare parts buyers.

6. Quality Control

Raw material chemical composition and hardness inspection of GCr15 bearing steel inner and outer rings
Precision forging, quenching tempering and ultra-precision mirror superfinishing processing for radial needle raceway and axial roller raceway
Dual cage production process: Brass CNC machining forming / glass fiber nylon injection integrated molding, strict flatness and strength inspection
Classified targeted performance testing: ZARF2575 series long-cycle high preload reciprocating rotation aging test, constant temperature precision stability test, radial-axial combined load deformation detection
Roller automatic sorting, cage assembly, full dimensional and surface defect recheck before anti-rust oil coating and wooden case packaging shipment
Each batch of ZARF2575 bearings passes full sampling combined radial-axial heavy load rotation test to guarantee stable long-term high precision support performance inside CNC ball screw and precision automation transmission equipment.

7. Get A Quote Now

If you need high rigidity ZARF2575-TV brass cage / ZARF2575TN nylon cage combined needle axial roller bearings for CNC ball screw, automation precision equipment maintenance & OEM matching, send your inquiry directly.
You will receive complete professional supporting services after submitting your inquiry:

• Fast official factory quotation reply within 24 hours
• One-on-one ball screw preload adjustment and shaft housing matching installation technical guidance from professional ZARF series composite bearing engineers
• Customized bearing scheme suggestions including P2 ultra-precision grade upgrade options
• Competitive direct factory bulk wholesale price for large spare parts bulk orders

Send your required purchase quantity and equipment high precision, heavy preload & medium speed working environment to obtain detailed formal quotation.

8. FAQ

Q1: What is the difference between ZARF2575-TV and ZARF2575TN?
A1: They have identical size, load capacity and precision, only different cage material; TV is solid brass cage for heavy continuous load, TN is reinforced nylon cage for medium high-speed load.
Q2: What is the characteristic of ZARF combined bearing?
A2: Integrated structure with radial needle roller and bidirectional axial cylindrical roller, can bear radial and double-way axial load simultaneously, widely used for ball screw fixed end support.
Q3: What precision grade is standard for this bearing?
A3: Standard precision is P4 grade, P2 ultra-precision version can be customized for ultra-high precision optical and semiconductor equipment.