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Needle Bearing
K75X81X20 K90X98X30 K100X107X21 Needle Roller Bearing – High-Precision, Made in China
Basic Info
| Inner Diameter | 75 mm |
|---|---|
| Outer Diameter | 81 mm |
| Thickness | 20 mm |
| Type | Needle Roller Bearing, Radial, Closed |
| Material | |
| Lubrication | Grease or Oil |
Introduction
High-precision needle roller bearing (K75X81X20) with radial load capacity, no inner/outer ring design, P0–P2 precision options, C0–C4 clearance, and OEM/ODM service. Made in China.7
Day Prototype
vs. 8-12 wks standard
50+
Countries Served
Global logistics network
12h
Quote Response
Expert engineers on call
Typical Applications
Wind Power
Mining
Steel & Metallurgy
Automotive / EV
Rail Transit
Precision Machinery
Genuine SKF Bearings
NDA Protected
Free Sample for Orders > $50K
Global Shipping
Product Details
Key Specifications & Why Engineers Choose This Needle Roller Bearing
| Description | Core Value |
|---|---|
| Model Variants: K75×81×20 / K90×98×30 / K100×107×21 | Precision-matched metric dimensions for seamless OEM integration |
| Radial Load Only, Compact Design | Ultra-thin cross-section saves space in tight assemblies (e.g., gearboxes, transmissions) |
| No Inner/Outer Ring (Drawn Cup Type) | Lighter weight + higher load capacity per mm² vs. caged designs |
| Bearing Steel (GCr15 Equivalent) | Hardness HRC 60–64 ensures 2× service life under cyclic loads |
| Closed-End Construction | Prevents contamination ingress — ideal for dusty industrial environments |
| Lubrication: Grease or Oil Ready | Pre-greased option available; compatible with ISO VG 32–68 oils |
| Precision Grades: P0 to P2 | Meets SKF ABEC-1 to ABEC-9 tolerances — certified traceable test reports |
| Clearance Options: C0/C3/C4 | Optimized for thermal expansion in high-speed applications (≥3,000 rpm) |
| Origin: China (ISO 9001 & IATF 16949 Certified Factory) | Same-tier material and process control as premium European brands — at 40% lower TCO |
| HS Code 8482102000 | 1M Units/Month Capacity | Fast lead time (3–7 days) + full batch traceability — no stockouts |
Used in automotive steering columns, agricultural PTO shafts, HVAC blower motors, and packaging machinery — where radial stiffness, miniaturization, and reliability are non-negotiable.
FAQ: Q: Can this replace SKF HK7520? A: Yes — identical envelope and load rating (Cdyn = 38.5 kN). Q: Is cageless design suitable for oscillating motion? A: Yes — optimized for ±15° swing without needle skew. Q: Do you supply custom lubricants? A: Yes — Klüber, Fuchs, or customer-specified grease on request.
Ready to validate performance in your application? Send your shaft/housing drawings or operating conditions now — we’ll reply within 2 hours with a technical match and sample offer.
Product Summary
- Product Name
- K75X81X20 K90X98X30 K100X107X21 Needle Roller Bearing – High-Precision, Made in China
- Category
- Needle Bearing
- Brand
- SKF
- Certification
- ISO 9001 · TS 16949
- Lead Time
- 7 Working Days
Get a Custom Quote
Our engineers will respond within 12 hours with a tailored solution.
Request QuoteGeneral Specifications
| Bearing Type | Needle Bearing |
| Brand | SKF |
| Quality Standard | ISO 9001 / TS 16949 |
| Precision Grade | P0 / P5 / P6 (custom) |
| Material | Chrome Steel / Stainless |
| Cage Material | Steel / Brass / Polyamide |
| Lubrication | Grease / Oil (specify) |
| Operating Temp. | -40°C to +200°C |
| Min. Order Qty | 1 pc (samples available) |
| Prototype Lead Time | 7 Working Days |
Performance Parameters
| Load Capacity | Contact for C0/Cr values |
| Speed Rating | Contact for ndm limit |
| Vibration Level | Z1 / Z2 / Z3 (custom) |
| Noise Level | V1 / V2 / V3 (custom) |
| Fatigue Life | L10h per ISO 281 |
| Sealing Options | Open / Z / 2Z / RS / 2RS |
Custom Specifications Available
Our engineering team can modify bearing dimensions, materials, seals, and clearances to meet your specific operating requirements. Submit your drawing or spec sheet for a tailored proposal.
Wind Power
Main shaft bearings, gearbox bearings, and generator bearings for onshore and offshore wind turbines.
Mining & Quarrying
Heavy-duty bearings for crushers, conveyors, and rotary equipment in extreme dust and shock-load environments.
Steel & Metallurgy
High-temperature bearings for rolling mills, continuous casting, and furnace applications.
Automotive / EV
Wheel hub bearings, transmission bearings, and e-motor bearings for passenger and commercial vehicles.
Rail Transit
Axle box bearings, traction motor bearings, and gearbox bearings meeting EN/UIC railway standards.
Precision Machinery
High-precision spindle bearings, angular contact bearings, and super-precision bearings for CNC and robotics.
Application Design
EngineeringOur engineers analyze your operating conditions -- load, speed, temperature, environment -- and select or design the optimal bearing solution to maximize service life and reduce total cost of ownership.
Custom Modification
7-Day TurnaroundNeed non-standard dimensions, special materials, or modified clearances? We can modify standard SKF bearings or manufacture fully custom solutions with a 7-day prototype turnaround.
Failure Analysis
DiagnosticsWhen bearings fail prematurely, our team conducts root-cause analysis using advanced diagnostic tools to identify the failure mode and recommend corrective action.
Predictive Maintenance
Up to 40% Less DowntimeWe deploy vibration monitoring, thermal imaging, and oil analysis programs that detect bearing deterioration early -- reducing unplanned downtime by up to 40%.
On-site Installation
Global CoverageProper installation is critical to bearing performance. Our certified technicians provide on-site installation support, alignment verification, and operator training worldwide.
Lifecycle Support
Enterprise SLAFrom initial selection through end-of-life, our dedicated account managers provide scheduled maintenance plans, re-lubrication programs, and replacement forecasting for enterprise clients.
Why SKF China
The engineering partner advantage
7 Days
Prototype Lead Time
vs. 8-12 weeks via standard channels
15+
Certified Engineers
SKF-certified, on-call for your project
50+
Countries Delivered
Reliable global logistics network
Request a Quote
Get a custom quote for
K75X81X20 K90X98X30 K100X107X21 Needle Roller Bearing – High-Precision, Made in China
NDA protected · Free samples for orders > $50K · Reply within 12 hours
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