GQZ LRT202526 Hardened Ground Needle Roller Inner Ring 20×25×26mm For Compact Transmission Assemblies

LRT202526 is standard precision ground inner ring for metric machined needle roller bearings, matching model RNAFW253526. It serves as independent rolling raceway when the shaft cannot reach required hardness and finish standard. Fully quenched & superfinishing ground surface ensures low friction and wear resistance, widely paired with TAF, NK, RNAFW series no-inner-ring needle bearings for narrow-space compact transmission equipment.

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Model: LRT202526

Core dimension: d=20mm, F=25mm, B=26mm

Min fillet radius rs: 0.3mm

Net weight: 36g

Matching outer needle bearing: RNAFW253526

Surface treatment: Full quenching + mirror superfinish grinding

Hardness: HRC60~64

Structure: Plain cylindrical inner sleeve without oil holes, slight taper relief on both ends

Material: GCr15 chrome bearing steel

Installation range: Min da=22mm, Max da=24mm

Full dimensional drawings and matching bearing parameter sheets available on request

1. High-hardness fully ground inner raceway, solves the problem of unqualified shaft surface hardness/roughness
2. Standard universal size perfectly compatible with IKO/INA RNAFW253526 needle roller bearings
3. Uniform precision grinding surface reduces friction, vibration and noise during high-speed rotation
4. Compact thin-wall structure occupies minimal radial space, ideal for miniaturized mechanical design
5. Two-end slight taper relief for easier assembly and disassembly of needle roller units
6. Can be used separately as wear-resistant bushing without matching needle rollers
7. Custom stainless steel inner rings, OEM laser marking and high-precision grinding tolerance supported

   👉 Save shaft heat treatment cost and extend service life of compact needle bearing assemblies

• Compact industrial small gearboxes and miniature reducers
• Precision automation rotary transmission shafts
• Machine tool feed mechanism auxiliary spindles
• Automotive auxiliary transmission needle bearing sets
• Textile, packaging narrow-space rotating assemblies
• Hydraulic pump, small motor rotor supporting components

• 25+ years professional manufacturer of LRT series needle roller inner rings
• Exported to over 50 countries worldwide
• Strict hardness, roundness, surface roughness and dimensional tolerance inspection before delivery
• 24-hour technical support for bearing set matching and assembly guidance
• Stable bulk stock supply for automation, gearbox and machinery distributors

👉 We focus on quality, reliability, and long-term partnership

• GCr15 raw material metallurgy & hardness inspection
• Complete quenching & tempering heat stabilization process
• Double-pass superfinishing grinding for inner and outer race surfaces
• Roundness, cylindricity and surface roughness testing
• Full dimensional tolerance inspection for precision inner sleeves

Looking for LRT202526 hardened ground needle roller inner rings?

👉 Send inquiry to get:

• Fast quotation within 24 hours
• Complete needle bearing matching parameter suggestion
• Custom stainless steel and ultra-precision grinding options
• Competitive factory price

Contact our sales team for full technical datasheets and formal quotation