Precision Dowel Pin CNC Turned Alloy Steel Zinc Plated Knurled Tight Tolerance
Tingfeng Hardware, as a professional dowel pin supplier, provides CNC turned alloy steel zinc plated knurled dowel pins, specifically designed for conveyor and elevator motors. Using high-quality alloy steel material, through precision turning, knurling, and cylindrical grinding processes, achieving tight tolerance control. Knurling design provides reliable press-fit or locating function. Zinc plating surface treatment ensures corrosion protection, suitable for long-term use in logistics conveying equipment. Custom drawing bulk supply supported.
Product Description
Precision dowel pins are critical locating and connecting components in conveyors, elevator motors, and transmission equipment. Our dowel pins use high-quality alloy steel, with diameter accuracy guaranteed through CNC turning, knurling providing press-fit surface characteristics, precision cylindrical grinding achieving tight tolerance control. Suitable for motor end cover locating, conveyor belt roller locating, elevator rail connection applications. As a professional dowel pin supplier, we provide full-range custom services from 3mm to 50mm diameter, 10mm to 150mm length, bulk supply ensuring stable production line operation.
Product Features & Advantages
| Feature |
Advantage to You |
| Tight tolerance control |
Dowel pin diameter tolerance ±0.008-0.015mm, ensuring accuracy of press-fit or slip-fit |
| Alloy steel material |
High strength, high toughness, suitable for applications withstand shear force and impact loads |
| Knurled surface |
Provides reliable press-fit surface, anti-rotation, anti-loosening |
| Precision cylindrical grinding |
Surface roughness Ra 0.4μm, improving wear resistance and fit accuracy |
| Bulk supply capacity |
Stable monthly capacity, supporting continuous bulk purchasing needs of conveying equipment industry |
Product Specifications
| Specification Item |
Detail / Range |
Tolerance / Standard |
| Material |
Alloy Steel / Bearing Steel |
Tensile ≥800MPa |
| Surface Finish |
Zinc Plated / Chrome Plated / Black Oxide |
Salt spray ≥48 hours |
| Diameter Tolerance |
±0.008mm / ±0.015mm |
ISO 8734 |
| Length Tolerance |
±0.05mm -- ±0.15mm |
Per drawing |
| Surface Roughness |
Ra 0.4μm -- 1.6μm |
Grinding process |
| Knurling Specification |
Straight / Diamond |
DIN 82 |
| Hardness |
HRC 30 -- HRC 55 |
Material and heat treatment dependent |
| Chamfer Specification |
0.5×45° / 1×45° / Custom |
Per drawing |
Product Applications
Conveyor Equipment Applications:
- Belt conveyor roller locating pins, chain conveyor connecting pins
- Roller conveyor bearing locating pins, logistics sorting equipment locating pins
Elevator Motor Applications:
- Elevator traction machine locating pins, elevator rail connecting locating pins
- Escalator transmission locating pins, lifting platform locating pins
Transmission Equipment Applications:
- Reducer locating pins, motor end cover locating pins
- Coupling locating pins, transmission shaft locating pins
Frequently Asked Questions (FAQ)
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.
