Ti5 Robot CRA-RI60-70-PRO-S-XX Hollow-Shaft Joint Actuator, 24–48 V CAN/EtherCAT, IP65, 51–102:1, up to 66 N·m peak, -B brake option

Overview

The Ti5 Robot CRA-RI60-70-PRO-S-XX is a compact, hollow-shaft integrated robot joint for arms, humanoids, exoskeletons, UAV mechanisms and mobile platforms. It combines a frameless BLDC torque motor, precision reducer, magnetic absolute encoder (single or dual), and drive interface in one IP65 module. The PRO-S architecture prioritizes miniaturization and fast dynamic response while keeping a high load-to-weight ratio. Communication is CAN by default, with EtherCAT available. A factory brake version “-B” adds a holding brake for power-off safety. (All values below are read from the provided datasheets and product screenshots.)

Key Features

• Hollow-shaft compact joint module (Ø60/Ø70 series) for easy cable and pneumatics routing

• Ratios 51, 81, 101, 102 with low backlash (down to 10 arcsec depending on ratio)

• Peak torque up to 66 N·m; rated torque up to 30 N·m (2000 rpm/ratio condition)

• Fast response; high load-to-weight design (≈0.69 kg standard / ≈0.84 kg with brake)

• IP65 dust-/water-proof housing, aluminum structure

• Magnetic absolute encoder, 17-bit; single- or dual-encoder options

• 24–48 V DC supply, CAN bus (EtherCAT optional); through-shaft Ø18 mm

• “-B” variant adds power-off brake; longer body and higher inertia for holding

Specifications

Common electrical & mechanical

• Motor power: 300 W

• Supply voltage: 24–48 V DC

• Max continuous current: 6.7 A; Rated current: 5 A; Phase resistance: 0.33 Ω

• Torque constant: 0.096 N·m/A; Inductance: 0.074 mH; Pole pairs: 10

• Encoder: magnetic absolute, 17-bit; single/dual selectable

• Communication: CAN (EtherCAT optional)

• Through-bore: 18 mm; Protection: IP65

Per gear ratio (CRA-RI60-70-PRO-S-XX)

Form factor & inertia

• Standard (-XX): length 70.7 ± 0.5 mm; weight 0.69 kg; rotor inertia 382 g·cm²

• With brake (-XX-B): length 89.7 ± 0.5 mm; weight 0.84 kg; rotor inertia 538 g·cm²

Other catalog data

• Rated torque reference value: 30 N·m

• Typical rated speed: 30 rpm (ratio-dependent)

• Operating temperature: up to 60 °C

• Mounting: screw mounting; keyed shaft interface

Notes: single/dual encoder, brake option, and bus type are selectable at order; EtherCAT shown as “Ether-cat” in the screenshots. All dimensions and ratings above are taken directly from the provided sheets for CRA-RI60-70-PRO-S-XX and CRA-RI60-70-PRO-S-XX-B.

Applications

• 6-axis collaborative and industrial robotic arms

• Humanoid joints (shoulder, elbow, hip, knee)

• Exoskeletons and rehabilitation devices

• UAV gimbals/mechanisms and light manipulators

• AGV/AMR mechanisms, small machine tools and lab automation

Details

CRA-RI60-70-PRO-S-XX actuator specifications: 300W motor, 24-48V, 5A rated current, 17 RPM encoder resolution, CAN communication, 0.69kg weight, 382 G·CM² inertia, multiple gear ratios with torque and speed data.

CRA-RI60-70-PRO-S-XX-B actuator specifications: 300W motor, 24-48V, 5A rated current, 0.33Ω resistance, 17 RPM encoder resolution, CAN bus, 0.84kg weight, 538 G·cm² inertia. Dimensions: 89.7±0.5mm length, Ø70.37mm.