Integrated hollow-shaft rotary actuator with harmonic gear, servo motor and absolute encoder; sizes 14-40, peak torque 23-800 N·m, IP65.
COMPONENT
M17M standard 17-bit split magnetic-electric absolute encoders: 17-bit single-turn, 16-bit multi-turn, 5 V, RS485 at 2.5 Mbps. Strong vibration/shock/contamination resistance for reliable servo feedback in automation, robotics and logistics.
M23M high-performance split magnetic-electric absolute encoders: 23-bit single-turn, 16-bit multi-turn, 5 V supply, RS485 at 2.5/5 Mbps. Magnetic sensing gives strong vibration, shock and contamination resistance for servo feedback in robotics, laser, woodworking and logistics equipment.
The AMM5B is Lika's optical absolute kit encoder for robotic joints, cobots and hollow-shaft motors: up to 23-bit singleturn (8,388,608 cpr) plus electronic multiturn counter x65,536 revs, ±0.02° typical (±0.2° max) accuracy, dual BiSS-C (max 10 MHz) + 1Vpp sin/cos incremental track output; +5 Vdc ±5% at 0.5 W, hollow shaft up to Ø24 mm, 10,000 rpm max, 250 g shock / 10 g vibration endurance, -25 to +100°C with the encoder module under 23 g, a mainstream European choice for high-precision absolute feedback in compact joint modules.
The MSK36 is Lika's (Italy) shaftless, bearingless magnetic absolute encoder with contactless sensing and sealed-circuit option up to IP68, SSI output (13-clock, max 1 MHz) at 8192 steps/rev with ±1° accuracy; +10-30 Vdc supply at ≤30 mA, Ø6/8/10 mm hollow shaft, 12,000 rpm max, 250 g (6 ms) shock / 10 g (5-2,000 Hz) vibration endurance, -20 to +85°C at ~50 g, with electronic zero-setting for absolute position feedback in wet and dusty motor/joint environments.
The MA3 is US Digital's miniature absolute magnetic shaft encoder with 10/12-bit absolute angular resolution over analog or PWM output and instant angle at power-up; 4.5-5.5 V supply at 16-20 mA typical, 50 ms power-up; up to 15,000 rpm mechanical with starting torque as low as 0.05 in-oz and 4.1e-6 oz-in-s² rotor inertia; -40 to +125°C operation, 20 G vibration (5 Hz-2 kHz), ±2 kV HBM ESD per MIL-STD-883E 3015.7 and only 0.046° RMS output noise on the 12-bit version, in a threaded brass 3/8-32 UNF package for compact absolute angle feedback in robot joints, servos and gimbals.
Tamagawa Seiki's SI35 single-turn absolute encoders target in-servo position feedback: TS5668N20 at 17-bit and TS5710N40/TS5711N40 at 23-bit resolution in a Φ35 mm frame with Φ6/Φ8 mm shafts, pure-binary code over line-driver output, DC+5V±5% supply at 110-150 mA, up to 6,000 rpm with starting torque as low as 5.9e-3 N·m, -10 to +85°C operation, 98 m/s² (10G) vibration and 1,960 m/s² (200G) shock endurance at only 0.03-0.06 kg, a compact absolute feedback choice for cobot and humanoid joint modules.
RLS (Renishaw Group) AksIM-4 is a non-contact absolute magnetic ring encoder for large-diameter rotary axes; the readhead and ring mount separately with generous air-gap tolerance, maintenance-free and easy to install. Three bores 105/155/205 mm (OD 140.4/190.4/240.4 mm), 26-30 bit resolution options, accuracy better than ±130 arcsec, repeatability better than ±10 arcsec, BiSS-C synchronous serial interface, IP67 rated; UL-certified and off-axis variants available for robot joints, turntables, radar pedestals and medical systems.
Same Sky (formerly CUI Devices, USA) AMT21 is a capacitive multiturn absolute modular encoder with 12/14-bit single-turn position plus 14-bit signed turn counter over half-duplex RS485 at up to 2 Mbps low latency; 3.8-5.5 V at 16 mA unloaded, -40~105°C; snap-on modular mounting suiting robot joint multiturn absolute feedback, cobots and AGV steering where position must survive power-off.
Same Sky (formerly CUI Devices, USA) AMT203-V is a capacitive absolute modular encoder giving 12-bit absolute position over SPI (4096 positions) plus optional quadrature to 1024 PPR; 8,000 RPM max, 4.5-5.5 V at 8-10 mA unloaded, -40~125°C; zero-set via SPI or AMT Viewpoint software, snap-on modular mounting, suiting robot joint absolute feedback and power-off position retention.
HEIDENHAIN (Germany) is the global benchmark for precision encoders and CNC controls. The ECN/EQN 1300 series are built-in rotary encoders with 25-bit resolution (33,554,432 positions per revolution), ±20 arcsec system accuracy, an integrated 4096-revolution multiturn gear for EQN, EnDat 2.2 and DRIVE-CLiQ interfaces, functional safety to SIL 2 and a Ø56 mm housing for servo motor and robot joint integration.
The AZ Series is Oriental Motor's (Japan) αSTEP closed-loop stepper family with a built-in mechanical absolute encoder (ABZO) for battery-free absolute positioning without external sensors. Its hybrid control runs open-loop under normal load and switches to closed-loop correction on overload, combining stepper responsiveness with servo-level reliability, tuning-free and without stop-position hunting. Frames span NEMA 8 to NEMA 34 with holding torque up to 4 N·m standard and 110 N·m geared; brake, IP66 connector and geared variants are available, and matching drivers support EtherCAT, EtherNet/IP, PROFINET and Modbus.
Renishaw (UK) is a world leader in precision measurement and encoders. RESOLUTE is a high-speed, fine-resolution true-absolute open optical encoder system: the readhead acts as an ultra-fast miniature camera imaging a single-track 30 um-pitch absolute scale, with a DSP computing absolute position - position is available immediately at switch-on with no battery and no multi-track de-phasing. Linear resolution down to 1 nm, rotary up to 32 bit (4,294,967,296 counts/rev, ~0.0003 arcsec), max reading speed 100 m/s (36,000 rpm), SDE +/-40 nm and jitter <10 nm RMS, with dirt-immune scale reading. Variants include UHV (120 C bake-out), ETR (-40 to +80 C) and FS (functional safety SIL 2 / PL d); serial interfaces cover BiSS C / BiSS Safety, FANUC, Mitsubishi, Panasonic, Siemens DRIVE-CLiQ and Yaskawa. Linear scales RTLA/RELA/RSLA up to 21 m; RESA30/REXA30 rotary rings 52-550 mm with typical installed accuracy of +/-1.9 arcsec. Used in semiconductor equipment, radar/SATCOM antennas, precision rotary tables and high-end robot joints.
RLS (Slovenia, part of the Renishaw group) is a specialist in rotary and linear magnetic encoders. AksIM-2 is a non-contact off-axis absolute rotary encoder module for applications with limited installation space: a compact, low-profile readhead detects the field of a thin axially magnetized ring. It uses a custom magnetic-sensor ASIC with BiSS C, SSI or asynchronous serial output, resolutions up to 20 bits, true absolute measurement with no hysteresis, built-in self-monitoring and a self-calibration option, and immunity to external magnetic fields; system accuracy after self-calibration is +/-0.004 to +/-0.020 deg (+/-14 to +/-72 arcsec), max speed 10,000 rpm, 4.5-5.5 V supply (typ. 130 mA); ring inner diameters span 8-68 mm in 11 sizes with -40 to +105 C operation. Used for position feedback in electric motors, medical devices and robot joints.
Tamagawa Seiki (Japan) is the global leader in absolute encoders for servo and robot joints, its SmartAbs protocol being a de-facto industry standard. The SA-series multi-turn absolute encoders span five frame sizes SA35-SA135 (Φ35-Φ135) with 17-27 bit single-turn plus 16-bit multi-turn resolution, including battery-less self-generating models (TS5966N/TS5964N) and Oldham-coupling easy-install variants, up to 8,000 rpm, DC 5V line-driver output, sealing up to IP67, 10G vibration / 200G shock endurance and -10 to +105 C operation at only 0.03-1.5 kg, the mainstream position feedback for industrial, cobot and humanoid joint motors.
