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Help CenterCustom Bore Gear Coupling With Keyway Dynamic Balanced Industrial Shaft Connection
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Henan San Kuang Machinery Technology Co., Ltd. proudly introduces our Custom Bore Gear Coupling With Keyway Dynamic Balanced Industrial Shaft Connection – a precision-engineered component designed for demanding power transmission applications. With over a decade of experience (since 2014) and a 10,000–30,000 sqm factory, we manufacture couplings that ensure reliable, low-vibration performance. This gear coupling combines a custom bore with an integrated keyway, delivering secure shaft attachment and dynamic balance for smooth operation even at high speeds.
Our couplings are widely used in industries such as mining, cement, steel, and material handling where misalignment and torque spikes are common. The dynamic balancing process minimizes vibration, extending the life of connected equipment. Every unit is produced with strict quality control, and we offer a range of surface treatments and material options to suit your environment.
Below are the key technical features and benefits that set this product apart.
Key Features & Technical Specifications
- Custom Bore & Keyway: Bore diameter and keyway dimensions are machined per customer drawings. Standard square keyways (DIN 6885) or special profiles available.
- Dynamic Balancing: Each coupling is balanced to G2.5 or G6.3 grade (ISO 1940-1) to reduce vibration. Balancing reports can be provided upon request.
- High Torque Density: Crowned gear teeth design provides higher load capacity and allows angular misalignment up to 1.5° and parallel misalignment up to 0.2 mm.
- Durable Materials: Made from high-strength alloy steel (40Cr or 42CrMo) or stainless steel (304/316) for corrosion resistance. Surface hardening (carburizing) optional.
- Easy Installation: Two-piece split design (flexible and rigid hub) simplifies mounting. Keyway and clamping screws ensure secure fit.
- Versatile Application: Suitable for connecting motors, gearboxes, and driven machinery in vertical or horizontal configurations.
Technical Parameters (Typical Range)
| Parameter | Value |
|---|---|
| Bore Diameter Range | 20 mm – 200 mm (custom) |
| Torque Capacity | 500 Nm – 5000 Nm |
| Speed Range | 0 – 6000 RPM |
| Balance Grade | G2.5 / G6.3 (ISO 1940) |
| Material Hardness | HRC 40–55 (case hardened) |
| Operating Temperature | -40°C to +120°C |
Why choose our gear coupling? The dynamic balancing feature is critical for high-speed applications (e.g., centrifugal pumps, blowers) where even slight imbalance can cause premature bearing failure. Our keyway design ensures positive torque transmission without slippage. We also support OEM/ODM with rapid turnaround – typical lead time is 15–25 working days after drawing approval.
Quality Assurance & Company Strength
Henan San Kuang Machinery Technology Co., Ltd. is committed to delivering excellence. Our factory occupies 10,000–30,000 square meters with 51–100 skilled employees. We hold multiple certifications including ISO9001, ISO14000, ISO10441, TS16969 and others (full list available upon request). Our annual export value reaches US$2.5–5 million, serving markets across North America, South America, Europe, Asia, Africa, and Oceania. We ship from major ports: Shanghai, Lianyungang, Qingdao, and Tianjin.
Every coupling is inspected for dimensional accuracy, material hardness, and dynamic balance before packing. We provide a 12-month warranty against defects in material and workmanship. Over the years, we have built trust with global clients who rely on our consistent quality and responsive service.
Contact us today to discuss your custom bore requirements. Send us your shaft dimensions and operating conditions – we will recommend the optimal coupling solution and provide a competitive quotation. Let our team of engineers support your next project.
Frequently Asked Questions (FAQ)
-
Q: Can you make a custom bore size not listed in your standard range?
A: Yes, we specialize in custom bores. Send your exact bore diameter, keyway dimensions, and tolerance requirements. We will machine accordingly. -
Q: What dynamic balance grade do you offer as standard?
A: Standard is G6.3. For higher precision (G2.5 or finer), we can provide balancing per ISO 1940-1 at additional cost. -
Q: Do you provide a dynamic balance test report?
A: Yes, a balancing report is available upon request for each coupling. -
Q: What is the maximum misalignment this coupling can accommodate?
A: Our gear coupling can handle angular misalignment up to 1.5°, parallel up to 0.2 mm, and axial movement up to ±1.5 mm (depending on size). -
Q: Can you supply only the coupling hubs without the flex sleeve?
A: Yes, we can supply individual parts. However, we recommend the complete assembly for optimal performance. -
Q: What materials do you use for high-temperature environments?
A: For temperatures up to 200°C, we use alloy steel with special heat treatment. Above that, consider stainless steel or nickel-based alloys (consult our engineers). -
Q: Are your couplings suitable for reversing loads?
A: Yes, the gear teeth design is symmetrical and can transmit torque in both directions with the same capacity. -
Q: What is the typical lead time for custom bore couplings?
A: After receiving drawing approval and order confirmation, lead time is 15–25 working days. Rush orders possible for small quantities.
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