Small Diameter Coupling Pin
CNC turned zinc plated steel knurled flanged custom bulk OEM components designed for printers, scanners, and appliance motors.
Precision Machined Parts Overview
Tingfeng Hardware specializes in small diameter coupling pins manufactured with CNC turning and zinc plated steel material. These components feature knurling and flange structures for reliable connection and positioning functions, with zinc plating providing corrosion protection. We support OEM customization per drawing with one-stop service from sample to mass production, backed by 15 years of precision manufacturing experience.
Product Description
Small diameter coupling pins serve as critical transmission connecting components in printers, scanners, and home appliance motors. Our precision CNC turning achieves exact dimensional control of small diameter parts, while knurling provides reliable press-fit gripping surfaces and flange structures ensure accurate axial positioning. These pins are suitable for connections between motor shafts and gears, pulleys, cams, and other transmission components. Zinc plating surface treatment offers excellent corrosion protection for long-term use in office equipment and home appliance applications.
Features & Advantages
| Feature |
Advantage to You |
| Small diameter precision machining |
Minimum diameter 2mm, suitable for compact space designs of office equipment and appliances |
| Knurled anti-slip surface |
Provides reliable press-fit gripping surface, easy installation and maintenance |
| Flange axial positioning |
Provides accurate axial positioning reference, simplifying assembly process |
| Zinc plating corrosion protection |
Salt spray test 48 hours, suitable for long-term use in office environments |
| Bulk custom production |
Supports OEM bulk supply, ensuring stable operation of appliance production lines |
Product Specifications
| Specification Item |
Detail / Range |
Tolerance / Standard |
| Material |
Carbon Steel / Alloy Steel / Stainless Steel |
Per drawing |
| Surface Finish |
Zinc Plated / Nickel Plated / Black Oxide |
Salt spray ≥48 hours |
| Diameter Range |
2mm -- 20mm |
±0.01mm -- ±0.025mm |
| Length Range |
5mm -- 60mm |
±0.05mm -- ±0.10mm |
| Coaxiality |
≤ 0.02mm |
Geometric tolerance |
| Flange Perpendicularity |
≤ 0.02mm |
Face runout guaranteed |
| Surface Roughness |
Ra 0.4μm -- 1.6μm |
Process dependent |
| Hardness |
HRC 20 -- HRC 45 |
Material and heat treatment dependent |
Product Applications
Office Equipment Applications:
- Printer transmission coupling pins, scanner drive connecting pins
- Copier transmission pins, fax machine connecting pins
- Shredder motor connecting pins, office automation equipment transmission components
Home Appliance Motor Applications:
- Vacuum cleaner motor connecting pins, air conditioner motor transmission pins
- Washing machine motor coupling pins, fan motor connecting pins
- Kitchen appliance motor transmission pins (mixers, juicers)
Smart Home Applications:
- Smart lock drive connecting pins, security camera pan-tilt transmission pins
- Smart curtain motor connecting pins, smart home sensor transmission components
Frequently Asked Questions
Q: Can you handle complex custom designs and provide design optimization suggestions?
A: Absolutely. This is our core expertise. We provide free DFM analysis within 3-5 days, often helping clients achieve 15-30% cost reduction through design for manufacturability.
Q: How do you ensure quality consistency and handle defect issues?
A: We implement a rigorous 4-stage QC system with 100% full inspection. Our track record shows 99.99% qualification rate.
Q: What are your lead times and how do you handle urgent orders?
A: Standard lead times: 3-7 days for prototypes, 7-15 days for mass production. We offer VIP prioritization cutting lead times by up to 30%.
Q: Will I get timely responses and professional support throughout the project?
A: Yes. You get a 1v1 exclusive consultant with 1-hour initial response commitment and 24-hour technical support.
Q: Can you provide material certifications and environmental compliance reports?
A: Yes. We provide material certifications and environmental test reports (RoHS, REACH compliant) upon request.
Q: How do you protect my designs and intellectual property?
A: We start with mutual NDA and implement strict mold ownership protection and confidential data security measures.
Q: What are your payment terms and MOQ requirements?
A: We offer flexible payment terms (T/T, L/C at sight) and MOQ from 1 piece for prototyping.
