ENCOS (Nanjing Encos Intelligent Technology) EC-A series integrated joint module with two-stage planetary (ratio 23.625) with hollow-shaft cable routing: 100 N m rated / 320 N m peak torque, 235rpm peak speed, Φ106 × 87mm（A ）/ 84mm（B ）, 1690g（A ）/ 1645g（B ）. About 320 n m peak (estimated) with 235 rpm high speed, aimed at high-load high-dynamics joints such as humanoid hips; a/b variants are different-thickness versions with power connectors.
COMPONENT
ENCOS (Nanjing Encos Intelligent Technology) EC-A series integrated joint module with single-stage planetary (ratio 18) with hollow-shaft cable routing: 40 N·m rated / 130 N·m peak torque, 140rpm peak speed, Φ105 × 57mm, 968g. Hollow shaft for cable routing with higher torque than the 8112, suited to hip and shoulder joints of humanoid robots.
ENCOS (Nanjing Encos Intelligent Technology) EC-A series integrated joint module with single-stage planetary (ratio 18) with hollow-shaft cable routing: 30 N·m rated / 90 N·m peak torque, 157rpm peak speed, Φ105 × 53mm, 883g. Hollow shaft for cable routing and high speed, suited to shoulder/hip joints requiring internal wiring.
The AKH70-16 V1.0 is a hollow-shaft planetary integrated actuator in the CubeMars AKH series: a 7 mm hollow bore for cable routing, 16:1 planetary reduction, 26 N·m rated and 85 N·m peak torque at 90 rpm rated speed, 90 mm diameter and 879 g. Brushless motor + driver + dual encoders in one, FOC with MIT/servo dual modes, for humanoid shoulder/elbow joints and cobot joints needing hollow cable routing.
Integrated hollow-shaft rotary actuator with harmonic gear, servo motor and absolute encoder; sizes 14-40, peak torque 23-800 N·m, IP65.
Nanotec ST4118M1804-L hollow-shaft stepper motor, NEMA 17 / 42 mm, holding torque 28 Ncm, 1.8 deg/step, 1.8 A per phase, 240 g; through-hole shaft for lead screws, spindles and cable-free rotary feeds in 3D printing, CNC and lab automation.
Harmonic Drive FBS hollow-shaft harmonic gear units: sizes 25/32 with ratios 30/50/100 (6 models). Rated L10 torque 15-56 Nm, repeated peak 25-106 Nm, instantaneous peak 50-151 Nm, standard accuracy 2-3 arcmin, mass 1.3-2.2 kg. The large-bore hollow shaft routes cables, air lines and optical shafts through the axis, ideal for robot joints and rotary platforms needing in-axis wiring.
Learn more about Harmonic Planetery® HPF Hollow Shaft Gear Unit
SCA4218: NEMA 17 stepper motor with hollow shaft and second shaft end. ✔️0.34-0.43 Nm holding torque ✔️encoder ✔️controller /drive ✔️42 mm flange
Similar to a hollow-shaft motor, the FAULHABER DM-Ring stepper offers a large aperture, which allows for light signals, cables, gas or liquids to pass through.
NSK Megatorque Motor PS/PN series are hollow-shaft direct-drive motors (OD φ150/φ280 mm) with 5/45 N·m rated and 15/135 N·m peak torque, φ56/φ50 mm hollow bore, built-in absolute position sensor at 4,194,304 counts/rev, absolute positioning accuracy 60 arc-sec (±30) and ±2 arc-sec repeatability; paired with EGC (EtherCAT) / ECC drivers for high-speed multi-axis synchronous control in semiconductor, inspection and precision indexing applications.
High torque-density integrated joint from CubeMars (Sanrui Intelligent) for humanoids and exoskeletons: 74 N·m rated / 222 N·m peak at only 1396 g (159 N·m/kg); 48:1 planetary reduction with 7 mm hollow bore, dual 21-bit magnetic encoders, integrated FOC driver, dual CAN, 48 V at 6 A rated / 18 A peak, 28 RPM rated, 12 arcmin backlash, listed at CNY 4888.
The CSD-2A is Harmonic Drive’s ultra-compact gear component set: shortest design, low weight and a large hollow shaft for cables and shafts, ideal for tight installation spaces. Official data: ratios 50/80/100/120/160 with repeatable peak torques 12-823 Nm, hollow shaft Ø11-50 mm, sizes 14-50; reduced moment of inertia for high dynamics, ideal with integrated output bearing arrangement.
