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Product Description
| thing | describe |
| Design/Size | According to customer's drawings or samples |
| Material |
Aluminum: 6061, 6063, 6082, 7075, 5052, A380, etc. Stainless steel: SS201, SS301, SS303, SS304, (SS304 food grade), SS316, SS316L, SUS430, SS416 Steel: low carbon steel, carbon steel, 4140, 4340, Q235, Q345B, 20#, 45#, etc. Alloy steel (15Cr, 20Cr, 42CrMo), etc. Brass: HPb63, HPb62, HPb61, HPb59, H59, H68, H80, H90, etc. Copper, bronze, copper, etc. Titanium: TC4 (TiAl6v4, Grade f5) Plastic: ABS, PC, PE, POM, Delrin, Nylon, Plastic, PP, PEI, Peek, etc. |
| process | CNC machining, turning, milling, stamping, turning, cutting, etc. |
| Delivery time | Samples usually take 3-7 working days, and mass production will be carried out according to the detailed quantity after sample approval. |
| Surface treatment | Transparent anodizing, color anodizing, chemical coating, brushing, passivation, polishing, chrome plating, sandblasting, laser engraving, zinc plating, black oxide, nickel plating, chrome plating, carburizing, heat treatment, painting |
| Test equipment | Coordinate measuring machine (CMM), 2D measuring instrument, projector, altimeter, micrometer, thread gauge, hardness tester, caliper, pin gauge, salt spray tester, concentricity measuring instrument, spectrometer. |
| Quality Management System |
ISO 9001:2015 ISO 13485:2016 |
| application | Auto parts, machinery parts, computer parts, medical parts, home appliance parts, electrical parts, electronic product parts, electronic parts, generator parts, alternator parts, generator parts, stationery, power switches, micro switches, construction, merchandise and A/V equipment. |
| File Format | Solidworks, Pro/Engineer, CAD, PDF, JPG, DXF, IGS |
| Package | Inner plastic bag, outer standard carton, or as per customer's requirements |
| Shipping | Sea freight, air freight, international express (DHL, FedEx, TNT, UPS). |
| Serve | The professional foreign trade team provides enthusiastic and fast response services. Dimensional inspection report/Raw material certificate/Surface treatment report/Engineering drawing RoHS report/Salt spray test report/Hardness test report |
Ningbo Liqin – Bearing Bracket Professional Custom Manufacturing Introduction
(Expert perspective in high-precision cold forging structural parts)
Part Type: High-Precision Cold Forged Bearing Bracket (Bearing Housing/Support) Material: Premium 20# carbon structural steel Process: Multi-station cold forging blank + high-precision turn-mill composite finishing Typical Weight: ~0.8 kg Applications: Automotive transmission systems, industrial spindle supports, high-precision reducers, and other applications demanding extreme strength, coaxiality, and fatigue life.
This is a classic part that showcases our core strength in cold forging + precision machining. Over the past 10+ years, we have delivered more than 800,000 similar cold forged bearing brackets to leading OEMs in Europe and North America with outstanding consistency and extremely high repeat order rates.
Key Structural Features & Cold Forging Challenges Customers Care About Most
- Ultra-deep blind hole + extremely thin side walls Customers’ top concern: cracking, uneven wall thickness, wrinkling, or folds during cold forging. → Our solution: 650T–800T multi-station progressive cold forging (forward + backward forging), combined with in-house developed long-life dies and optimized phosphating-saponification lubrication. Parts come out with perfectly uniform wall thickness and flawless surfaces. First-pass yield stably ≥99.5%.
- Large-diameter mounting spigot and deep bore with extremely tight coaxiality requirement The biggest technical challenge in cold forged parts! Micro-deformation occurs after forging due to residual stress release — a problem most factories cannot control. → Our proprietary and proven process:
- Immediate stress-relief annealing + artificial aging after forging
- Cryogenic treatment (−120°C × 8h) after rough machining to permanently lock dimensions
- Final machining completed in a single setup on turn-mill centers using high-rigidity hydraulic fixtures
- Resulting coaxiality, perpendicularity, and flatness routinely 50%–70% better than drawing requirements.
- Multiple small-radius fillets with full, smooth transitions – no sharp edges, no stress concentration → Achieved directly during cold forging using high-precision interchangeable die inserts. Perfectly rounded fillets formed in one shot, greatly enhancing fatigue resistance.
- Strict requirements on surface finish, hardness, and wear resistance of all mating surfaces → Roller burnishing after finish machining creates beneficial compressive stress layers, significantly increasing hardness and wear resistance. Customer bench tests show 40%+ longer fatigue life compared to fully machined parts.
Our Mature & Continuously Optimized Cold Forging Process Route (18 years of refinement)
- Raw material softening annealing
- Multi-station cold forging (650T–800T)
- Stress-relief annealing + phosphating lubrication
- Shot peening for enhanced fatigue strength
- Rough turning + cryogenic stabilization
- Turn-mill composite machining – all features in one setup
- Roller burnishing + precision cleaning & rust prevention
- 100% full inspection using CMM + automated comprehensive gauges
- Professional anti-rust packaging and shipment
Why Customers Keep Choosing Us
- Cost Advantage: Cold forging + composite machining saves 30%+ material and reduces total cost by 20–30% vs full machining
- Reliable Lead Time: 20# steel always in stock; standard batches delivered in as fast as 18–22 days
- Uncompromising Quality: Dual IATF16949 & ISO13485 certified, critical dimension CPK ≥ 1.67, PPM consistently below 50
- Superior Service Life: Uninterrupted metal flow + shot peening + roller burnishing deliver industry-leading fatigue performance and dramatically lower warranty risk
- Lightning-Fast Response: DFM manufacturability analysis within 24 hours, formal quotation within 72 hours
If you are looking for thin-wall, deep-hole, high-coaxiality cold forged bearing housings — or any cold forged structural part that others quote high prices, long lead times, or unstable quality for — feel free to send us your drawings anytime.
We turn customers’ “cold forging nightmares” into your greatest cost and performance advantage!
Ningbo Liqin Industry & Trade Co., Ltd. 18 years specialized in high-precision cold forging + finish machining of custom metal parts “Cold forging for higher strength and lower cost — we make your drawings perfect.”
TEL: +86 187 5714 8656
Email: zhouli@chinaliqin.com
WhatsApp：+86 187 5714 8656
Website:https://www.cncliq.com/