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Auto Bearing
30BD40T12DDUCG21 30×55×23 Hub Bearing – Premium Automotive Wheel Bearing
Basic Info
| Inner Diameter | 40 mm |
| Outer Diameter | 62 mm |
| Thickness | 24 mm |
Introduction
High-precision automobile air conditioning compressor bearing (Model: 30BD40T12DDUCG21). Features long life, high speed, low noise, and ISO9001 certification. Available in precision grades P0–P2. Lubricated with grease or oil. Made in China under BDL trademark. Rich stock and OEM/ODM service supported.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 & Advantages of 30BD40T12DDUCG21 Automotive Hub Bearing
| Description | Core Value |
|---|---|
| Model & Dimensions | 30BD40T12DDUCG21 | 30×55×23 mm (compact hub fit for front/rear axle) |
| Type & Application | Dedicated wheel/hub bearing for automotive AC compressors & chassis systems |
| Precision Rating | P0 to P2 grades — ultra-tight tolerances for high-speed stability & low NVH |
| Material & Build | High-carbon chromium steel (GCr15), heat-treated, precision-ground raceways |
| Lubrication | Pre-greased with long-life synthetic grease — zero maintenance at installation |
| Noise & Life | Optimized cage design + micro-finished surfaces → <28 dB noise, L10 life ≥ 120,000 km |
| Certification | ISO 9001 certified manufacturing; fully traceable batch control |
| ABS Compatibility | Integrated ABS sensor ring option — seamless OEM integration |
| Supply Reliability | In-stock inventory (1M+ units) + sea/air logistics — fast lead time for global buyers |
| SKF-Grade Alternative | Drop-in replacement for SKF VKBA 3642/VKBA 3657 — same fit, higher torque capacity (+7%) |
Engineered for OE-tier durability and aftermarket flexibility, this bearing delivers superior thermal stability under repeated stop-start cycles and resists corrosion in humid coastal environments. Unlike generic imports, it features double-lip seals with nitrile rubber (NBR) and optimized internal clearance (C3/C4 options available). Frequently asked: Q: Is preload adjustment required? A: No — pre-set axial play ensures immediate mounting. Q: Can it replace FAG or NTN equivalents? A: Yes — dimensional & functional interchangeability confirmed for 98% of 2015–2025 Asian/Euro light vehicles. Ready to request samples or bulk pricing? Contact us now for technical datasheets and OEM documentation.
Product Summary
- Product Name
- 30BD40T12DDUCG21 30×55×23 Hub Bearing – Premium Automotive Wheel Bearing
- Category
- Auto 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 | Auto 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
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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
30BD40T12DDUCG21 30×55×23 Hub Bearing – Premium Automotive Wheel Bearing
NDA protected · Free samples for orders > $50K · Reply within 12 hours
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