Korea's Trusted Cyclo Gear Reducer Manufacturer and Supplier

A cyclo gear reducer is a speed reduction device that uses an eccentric bearing to drive a cycloidal disc inside a ring of hardened steel pins. The rolling contact between the disc lobes and pins produces high torque output at reduced rotational speeds. Unlike conventional gear reducers that rely on sliding involute tooth contact, the cycloidal mechanism uses rolling contact across multiple simultaneous contact points, resulting in higher efficiency (85-92% for single stage), greater shock load tolerance (up to 500% momentary overload), and significantly longer service life (15-20 years under rated conditions).

Single-stage models (BWD, XWD, BLD, XLD, XW, BW series) cover ratios from 9:1 to 87:1. Double-stage models (BWED, XWED, BLED, XLED series) extend the range from 99:1 to 7,569:1 by compounding two cycloidal disc stages within a single housing. From a 1500 rpm motor input, this means output speeds ranging from approximately 167 rpm (at 9:1) down to 0.2 rpm (at 7,569:1).

Yes. Our cycloidal reducers are dimensionally compatible with Sumitomo CHHM, CHHJ, and SM-Cyclo equivalent frame sizes. This means the mounting bolt pattern, shaft diameter, keyway dimensions, and center height match the original equipment. In most cases, replacement is a direct bolt-in procedure requiring no base plate modifications, no coupling changes, and no realignment of the driven equipment.

The primary industries include mining and aggregate processing, cement and building materials, wastewater treatment, food and beverage production, chemical and pharmaceutical processing, textile manufacturing, printing equipment, port logistics, and general material handling systems. In Korea specifically, cycloidal reducers are widely installed in the Ulsan petrochemical complex, Gyeonggi-do manufacturing clusters, and municipal water treatment facilities.

A single-stage unit contains one set of cycloidal discs and pins, achieving ratios from 9:1 to 87:1 with 85-92% efficiency. A double-stage unit contains two sets within the same housing, compounding the ratios to reach 99:1 through 7,569:1 with 72-85% efficiency. Choose single stage when your required output speed is above approximately 17 rpm (from a 1500 rpm motor), and double stage when you need output speeds below 15 rpm.

Yes. Customization options include non-standard output shaft diameters, splined shafts, hollow bore outputs, extended shaft lengths, custom input flange patterns for non-IEC motors, special output flanges, custom RAL color painting, marine-grade anti-corrosion coating, food-safe epoxy coating, and private-label nameplates. Minimum order quantities are as low as one unit with 2 to 4 weeks lead time.

All products are manufactured under ISO 9001:2015 certified quality management and carry CE marking. Our quality process covers raw material inspection, in-process CNC machining tolerance verification, cycloidal disc profile measurement on coordinate measuring machines, assembled unit noise and vibration testing, and final paint and packaging inspection.

Standard models in popular frame sizes ship within 3 to 5 business days. Domestic Korean delivery takes 1-3 transit days. Japan receives ocean freight in 7-12 days. Vietnam, Thailand, Indonesia take 10-18 days. Larger frames and non-standard ratios require 2-3 weeks. Custom modifications add 1-2 additional weeks.

Calculate output torque: T = (Motor Power kW x 9550 x Ratio x Efficiency) / Motor RPM. Use 0.87 efficiency for single-stage, 0.78 for double-stage. Select a frame whose rated torque exceeds your result by a service factor of 1.25 (uniform loads) to 1.75 (heavy impact). Our engineering team offers this calculation free at [email protected].

All products carry a 12-month warranty from date of delivery covering manufacturing defects in materials and workmanship under normal operating conditions within rated load and speed parameters. Technical support is available throughout the product life cycle via email from our Korean liaison office.