Sumitomo Drive Technologies' Fine Cyclo A-Series (FC type) is a precision cycloidal reducer kit for motion control: zero mechanical backlash and <1 arcmin lost motion across 6 sizes, ratios 29-179:1, nominal torque 149-3,900 Nm, acceleration torque 335-7,610 Nm, momentary peak up to 24,000 Nm, input speed to 6,150 rpm and torsional stiffness to 1,100 Nm/arcmin; grease-filled with keyway/clamp/spline input options for robot joints and machine-tool rotary tables.
COMPONENT
Zhongda Leader (SZSE 002896) precision strain wave gear reducer in CSG high-torque cup, SHG high-torque hat and ZSHF flat hollow shaft series, sizes 14/17/20/25/32 with ratios 50/80/100/120; rated torque 5.4-137 N·m at 2000 rpm input, permissible peak torque at start/stop 6.9-216 N·m, instantaneous max torque 34-686 N·m, max input speed 3500 rpm (grease), 10000 h design life; transmission accuracy 1.2-1.8 arc-min, lost motion 1.0-2.0 arc-min, max backlash 28-60 arc-sec, graded torsional stiffness K1-K3; for industrial robot, intelligent logistics and precision automation joints.
Neugart (Germany) is a leading precision planetary gearbox maker. The PSNpro succeeds the discontinued PSN as its high-torque precision line: helical gearing for low-noise synchronisation, preloaded tapered roller bearings and a square output flange for high loads, cyclic torque from 14 to 1800 Nm, ratios 3-100, efficiency 96-97% and IP65 protection, built for high-dynamic, high-cycle applications.
SPINEA (Slovakia, now part of Timken) is the global benchmark for trochoidal (cycloidal) precision reduction gears. TwinSpin integrates a high-precision reduction mechanism with a high-capacity radial-axial output bearing in one unit: zero backlash, lost motion under 1 arcmin, average transmission error +/-18 to +/-36 arcsec. The cylindrical-case T series spans TS 60-TS 300 (9 sizes) with ratios 33-191, rated torque 37-2,940 N-m, emergency-stop capacity up to 14,700 N-m, torsional stiffness to 680 N-m/arcmin and tilting stiffness to 3,500 N-m/arcmin at only 0.86-55.7 kg; the load mounts directly on the output flange without extra bearings. Used in robotics, machine tools, medical, defense and automation.
Nabtesco (Japan) invented and dominates the RV cycloidal reducer used in industrial robots. The RV series uses two-stage reduction (involute center gear plus cycloidal pin stage) with an integrated angular ball main bearing: RV-E spans sizes 6E-450E and RV-C 10C-500C, rated torque 72-4,410 N·m (RV-E) and 98-4,900 N·m (RV-C) at 15 r/min output, ratios 31-192, lost motion under 1 arcmin and shock capacity of 5x rated torque, the de-facto standard for heavy industrial robot joints.
