KAF Series Flange-Mounted Helical-Bevel Gear Reducer with Hollow Shaft: High-Performance Power Transmission
Engineered for precision and durability, the KAF Series Flange-Mounted Helical-Bevel Gear Reducer with Hollow Shaft is designed to deliver exceptional performance in industrial machinery. Combining helical and bevel gear technologies, this reducer offers high efficiency, compact design, and reliable torque transmission for diverse applications.
Key Features:
Hollow Shaft Design: Enables direct motor or shaft coupling, reducing installation complexity and space requirements.
Flange Mounting: Simplifies alignment and integration into conveyors, mixers, or automation systems.
Dual Gear Technology: Helical gears ensure smooth, low-noise operation, while bevel gears provide high reduction ratios and axial load capacity.
IP65 Protection: Dust and water-resistant housing for use in harsh environments.
Customizable Ratios: Available with reduction ratios from 5:1 to 100:1 to meet specific speed and torque needs.
Applications:
Ideal for material handling, food processing, textile machinery, and automation lines. The hollow shaft design excels in applications requiring quick tool changes or belt/pulley integration.
Why Choose KAF?
- ISO 9001-certified quality and CE compliance.
- 2-year warranty and 24/7 technical support.
- Lightweight aluminum or corrosion-resistant cast iron housing options.
Upgrade your machinery with a reducer that balances power, efficiency, and versatility. Contact us today for a tailored quotation!
Product Name |
Flange-mounted helical-bevel gear units withhollow shaft |
Gear material |
20CrMnTi alloy steel |
Color |
Blue Silver Red Customerized |
Case Material |
Cast iron HT200 |
Gear Processing |
Grinding finish by HOFLER Grinding Machines |
Noise Test |
Below 65dB |
Brand of bearings |
C&U bearing, ZWZ,LYC, HRB, NSK ,etc |
Brand of oil seal |
NAK or other brand |
Temp. rise (MAX) |
40ºC |
Temp. rise (Oil)(MAX |
50ºC |
Vibration |
≤20µm |
Housing hardness |
HBS190-240 |
Surface hardness of gears |
HRC58°~62 ° |
Gear core hardness |
HRC33~40 |
Machining precision of gears |
5 Grade |
Lubricating oil |
GB L-CKC220-460, Shell Omala220-460 |
Heat treatment |
Carburizing, Quenching etc |
Efficiency |
95%~96% (depends on the transmission stage) |
Backlash |
≤20Arcmin |
Installation Instructions

Our company is specialized in the production of cycloidal gear reducer professional manufacturers, has many years of production history, work with a set of enterprise management and technical management system, products in strict accordance with JB298281 ministry standard production, by the International Provincial Bureau of standards acceptance of qualified products, to provide modern cycloidal gear.
The cycloidal pinwheel reducer produced by our company is a novel transmission machine using planetary transmission principle and cycloidal pinwheel tooth meshing, which is widely used in textile printing and dyeing, light industry food, metallurgy and mining, petrochemical, lifting and transportation and construction machinery and other industrial departments of the drive device and speed building device.
The cycloidal reducer produced by our factory has good quality, reliable performance, complete specifications and reasonable price. As our company follows: "sincerity, credibility" purpose, adhere to the quality first, customer first, and the majority of customers sincere and effective use, in the reliable use of the significant technical and economic effects, welcomed by various industries

Q1: What makes the KAF Series suitable for heavy-duty applications?
A: The KAF Series combines helical gears for high efficiency (up to 95%) and bevel gears for robust axial load handling. Its reinforced alloy steel construction and precision machining ensure durability in high-torque environments like conveyors or mixers.
Q2: How does the hollow shaft design benefit installation?
A: The hollow shaft allows direct coupling to motors, shafts, or belts without adapters, reducing setup time and minimizing misalignment risks. Ideal for quick tool changes in automation or packaging lines.
Q3: Can the KAF Series operate in wet or dusty conditions?
A: Yes! With an IP65/IP67 rating, it resists water jets and dust ingress. Optional stainless steel coatings or aluminum housings are available for corrosive environments like food processing plants.
Q4: What reduction ratios are available?
A: Ratios range from 5:1 to 100:1, customizable to match your speed and torque requirements. Our engineers can recommend the optimal configuration for your application.
Q5: Is maintenance complicated?
A: No. The modular design enables easy access to bearings and gears. Lubrication checks every 6 months are recommended, with annual inspections for heavy-duty use.
Q6: Does the reducer generate noise?
A: Helical gears reduce noise to ≤75 dB, making it suitable for noise-sensitive settings. Bevel gears ensure smooth operation even at high reduction ratios.
Q7: Can I customize the mounting options?
A: Absolutely! Choose from flange types (F2, F3, etc.), shaft orientations, and input/output configurations. We also offer explosion-proof models for hazardous environments.
Q8: What warranty coverage is provided?
A: A 2-year warranty covers defects in materials and workmanship. Extended warranties are available for continuous-duty operations or extreme conditions.
Q9: How does the KAF Series compare to standard reducers?
A: Its dual gear technology delivers higher torque density and better axial load capacity than single-gear reducers. The hollow shaft design also saves up to 30% installation space.
Q10: Are spare parts readily available?
A: Yes! We maintain a comprehensive inventory of replacement gears, bearings, and seals for quick delivery. Technical support is available 24/7 for troubleshooting.
For personalized recommendations, contact our team to discuss your specific needs.