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Help CenterPrecision Machined Gear Coupling And Pin Bush Coupling Available With Free Sample Test
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Henan San Kuang Machinery Technology Co., Ltd., established in 2014 and based in Luoyang, Henan, China, is a professional manufacturer specializing in precision power transmission components. With a factory size of 10,000-30,000 square meters, a dedicated team of 51-100 employees, and an annual export value of US$2.5 Million - US$5 Million, we take pride in delivering high-quality couplings to global markets including North America, Europe, and Asia. Our Precision Machined Gear Coupling And Pin Bush Coupling are engineered for reliable performance in demanding industrial applications. We are pleased to offer free sample tests so our customers can verify the quality and fit before placing bulk orders.
Product Overview
These couplings are designed to transmit torque between two shafts while accommodating misalignment, reducing vibration, and protecting connected machinery. Our gear coupling uses precision-machined hubs and sleeves with external and internal gear teeth, while the pin bush coupling (also known as pin and bush flexible coupling) uses rubber or polyurethane bushes mounted on pins to provide flexibility and shock absorption. Both types are manufactured under strict quality control with ISO9001 certification (other certifications such as HACCP, TL900, SA8000, ISO14000, OHSAS18001 are also held by our company, available upon request for specific projects).
Key Features & Technical Specifications
| Feature | Gear Coupling | Pin Bush Coupling |
|---|---|---|
| Material | Alloy steel (40Cr, 45#) or stainless steel | Cast iron / steel hub, polyurethane or rubber bushings |
| Torque Range | 100 Nm to 10000 Nm (customizable) | 50 Nm to 5000 Nm (customizable) |
| Misalignment Capacity | Radial: 0.5-2 mm, Angular: 1-3 degrees | Radial: 1-4 mm, Angular: 2-5 degrees |
| Surface Treatment | Black oxide, phosphating, or as required | Painted or galvanized |
| Operating Temperature | -40°C to +150°C | -20°C to +80°C (rubber), -40°C to +120°C (polyurethane) |
| Balance Grade | G6.3 (standard), G2.5 upon request | Standard dynamic balance |
- Precision Machined: All components are CNC machined to tight tolerances (IT6-IT8) ensuring smooth engagement and long service life.
- High Torque Density: Gear couplings offer high torque capacity in a compact size; pin bush couplings provide excellent vibration damping.
- Easy Installation: Both types feature a simple hub-and-sleeve or pin-bush design for quick mounting and dismounting.
- Low Maintenance: Gear couplings require periodic lubrication; pin bush couplings are nearly maintenance-free with elastomeric elements.
- Customizable Bore: Available with keyways, spline bores, or taper bushings to fit your shaft dimensions.
- Free Sample Test: We provide free samples for evaluation to ensure the coupling meets your specific requirements before mass production.
Applications
These couplings are widely used in:
- Conveyor systems (mining, cement, food processing)
- Pump and compressor drives
- Rolling mills and heavy machinery
- Paper and pulp equipment
- Marine and offshore applications
- General industrial power transmission
Customer Benefits
- Reliability: Our couplings are designed to withstand harsh environments and continuous operation.
- Cost Efficiency: Direct factory pricing with no middlemen; competitive quotes for large volumes.
- Global Shipping: We ship from major Chinese ports (Shanghai, Lianyungang, Qingdao, Tianjin) to destinations worldwide. Typical lead time is 15-30 days.
- Technical Support: Our engineering team can assist in selecting the right coupling type and size for your application.
Trust & Quality Assurance
Henan San Kuang Machinery Technology Co., Ltd. is a company with over 10 years of manufacturing experience in power transmission components. Our products are certified under ISO9001 (as well as ISO14000, OHSAS18001, and other management systems). We have exported to more than 15 countries across North America, South America, Europe, Africa, and Asia. Our annual export value of US$2.5M - US$5M reflects the trust global customers place in our quality. We invite you to request a free sample test to experience the precision and durability of our gear and pin bush couplings. Contact us today for a quotation or technical consultation.
Frequently Asked Questions (FAQ)
-
Q: What is the difference between a gear coupling and a pin bush coupling?
A: A gear coupling uses interlocking gear teeth on hubs and a sleeve to transmit torque, offering higher torque capacity and allowing some angular misalignment. A pin bush coupling uses flexible rubber or polyurethane bushes mounted on pins, providing better vibration dampening and accommodating higher radial misalignment. Choose based on your application's torque, misalignment, and damping requirements. -
Q: How can I get a free sample for testing?
A: Simply contact our sales team with your shaft dimensions, required torque, and application details. We will prepare a suitable sample and arrange shipping. You only need to cover the shipping cost (or we can discuss terms). The sample itself is free. -
Q: Are these couplings compatible with standard NEMA or IEC motor shafts?
A: Yes, we can customize the bore size, keyway, and flange dimensions to match standard motor shafts (NEMA, IEC, DIN, etc.). Please provide your shaft details when ordering. -
Q: What certifications do you have for quality control?
A: Our company holds ISO9001, ISO14000, OHSAS18001, and other certifications (HACCP, TL900, SA8000, etc.) that are available upon request for specific industries. We follow strict in-house quality checks including material analysis, hardness testing, and dimensional inspection. -
Q: What is the typical lead time for bulk orders?
A: For standard sizes, lead time is approximately 15-20 working days. For custom designs, it may be 25-35 working days depending on complexity. We can expedite for urgent orders with prior arrangement. -
Q: Do you provide technical data sheets or installation manuals?
A: Yes, we provide detailed product drawings, torque ratings, misalignment capabilities, and installation guidelines in PDF format upon request. -
Q: What is the minimum order quantity (MOQ)?
A: For standard models, MOQ is typically 1 piece for sample testing. For production orders, MOQ is 10-50 pieces depending on size. We are flexible with new customers. -
Q: How do you package the couplings for export?
A: We use sturdy wooden cases or cartons with foam padding to protect the precision surfaces. Each coupling is individually wrapped and oiled to prevent rust during transit.
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