ROBSTRIDE05 QDD 5.5Nm Compact Dual-Encoder Joint Motor
ROBSTRIDE05 is a small dual-encoder actuator for lightweight robot mechanisms. This quasi-direct-drive robot joint motor integrates a brushless motor, a 7.75:1 machined-steel reduc er, FOC drive electronics and dual magnetic encoders in one assembly. It provides 5.5 N.m peak torque for transient motion demands within its electrical and thermal limits.The actuator uses a 48 V nominal supply and 1 Mbps CAN communication. Its 1.6 N.m rated torque is tested at 100 rpm with heat sinking. The 480 rpm +/- 10% no-load speed is a separate operating condition. The 46 mm-class body and 191 g-class mass make ROBSTRIDE05 useful for low-inertia distal axes. Its machined-steel 7.75:1 reducer differs from the 9:1 powder-metallurgy reducer in EduLite05.For robotic arms, legged-robot prototypes, education and custom automation, the integrated module reduces the number of separate drive components to package. Its 191 g +/- 3 g mass should be considered alongside load inertia, mounting stiffness and cooling when selecting a joint. The technical files below support CAD integration, CAN configuration and bench commissioning. Features Integrated QDD module - Combines motor, reduction gearing, FOC electronics and encoder feedback for compact robotic joint integration. 5.5 N.m peak torque - Provides transient output capability; choose the motion profile using the torque-speed and overload data, not peak torque alone. 1.6 N.m rated torque - Requires heat sinking and is tested at 100 rpm. Dual magnetic encoders - Provides integrated position feedback for closed-loop joint control and commissioning. 7.75:1 machined-steel gearing - Balances output torque, speed and packaging for the intended mechanism. The 46 mm-class body and 191 g-class mass make ROBSTRIDE05 useful for low-inertia distal axes. Its machined-steel 7.75:1 reducer differs from the 9:1 powder-metallurgy reducer in EduLite05. 48 V nominal power - Uses the 15-60 V DC operating range specified in the linked user manual. Design wiring, protection and braking-energy handling for the complete system. FOC and bidirectional control - Supports CW/CCW motion with documented current, velocity, position and operation-control workflows. 1 Mbps CAN interface - Supports command and feedback exchange with a compatible host. Check CAN IDs, termination and firmware protocol before combining multiple axes. Mechanical integration - A 46 x 46 x 44 mm envelope and 191 g +/- 3 g mass support CAD-level joint planning. Check the mounting drawing for detailed hole locations and clearances. Technical development files - Model-specific English documentation and a 3D CAD model support mechanical design, wiring, parameter setup and software integration. Specifications Parameter Value Model RobStride 05 Product Type QDD integrated robot joint actuator Size 46 x 46 x 44 mm Weight 191 g +/- 3 g Poles 20 Phases 3phases Drive Method FOC Reduction Ratio 7.75:1 Gear Material Machined Steel Rated Voltage 48 V DC Voltage Range 15-60 V DC Rated Torque 1.6 N.m, with heat sinking Peak Torque 5.5 N.m No-load Speed 480 rpm +/- 10% No-load Current 0.14 Arms Rated Torque Test Speed 100 rpm Rated Load Phase Current 2.4 Apk +/- 10% Peak Phase Current 11 Apk +/- 10% Back-EMF 7.4 Vrms/krpm +/- 10% Torque Constant 0.94 N.m/Arms Encoder 2 Magnetic Encoder Encoder Resolution 14-bit single-turn absolute Baud Rate 1 Mbps CAN Temperature Range -20~50 deg C Humidity Range 5-85% RH, non-condensing Storage Temperature Range -30~70 deg C Insulation Level Class B Insulation Resistance / Stator Winding 100 MOhm High Voltage Resistance / Stator and Casing 600 VAC, 1s, 2mA Rated Torque Heat Sink 70 x 70 mm Thermal design is part of actuator selection. Account for the heat path into the mounting structure, ambient conditions and duty cycle. Rated rotating torque is not automatically a continuous stall rating. Product Comparison Model Peak Torque Rated Torque / Test Speed Rated Voltage Voltage Range Dimensions Weight Protection Feedback Ratio No-load Speed ROBSTRIDE00 14 N.m 5 N.m at 100 rpm 48 V 24-60 V 57 x 57 x 51 mm 310 g +/- 3 g Not specified 2 magnetic encoders 10:1 315 rpm +/- 10% ROBSTRIDE01 17 N.m 6 N.m at 100 rpm 36 V 24-50 V 78.5 x 78.5 x 40 mm 380 g +/- 3 g IP52 1 magnetic encoder 7.75:1 315 rpm +/- 10% ROBSTRIDE02 17 N.m 6 N.m at 100 rpm 48 V 24-60 V 78.5 mm diameter; 41.5 mm body depth 380 g +/- 3 g IP52 2 magnetic encoders 7.75:1 410 rpm +/- 10% ROBSTRIDE03 60 N.m 20 N.m at 100 rpm 48 V 24-60 V 106 x 106 x 56 mm 880 g +/- 20 g IP52 2 magnetic encoders 9:1 200 rpm +/- 10% ROBSTRIDE04 120 N.m 40 / 35 N.m 48 V 24-60 V 120 x 120 x 56 mm 1420 g +/- 20 g IP52 2 magnetic encoders 9:1 200 rpm +/- 10% ROBSTRIDE05 5.5 N.m 1.6 N.m at 100 rpm 48 V 15-60 V 46 x 46 x 44 mm 191 g +/- 3 g Not specified 2 magnetic encoders 7.75:1 480 rpm +/- 10% ROBSTRIDE06 36 N.m 11 N.m at 100 rpm 48 V 15-60 V 88 x 88 x 49 mm 621 g +/- 3 g Not specified 2 magnetic encoders 9:1 480 rpm +/- 10% ROBSTRIDE-EDULITE05 6 N.m 1.8 N.m at 100 rpm 48 V 15-60 V 46 x 46 x 44 mm 242 g +/- 3 g Not specified 2 magnetic encoders 9:1 430 rpm +/- 10% ROBSTRIDE02-IP67 17 N.m 6 N.m at 100 rpm 48 V 24-60 V 81 mm diameter; 44 mm maximum body depth 490 g IP67 2 magnetic encoders 7.75:1 410 rpm +/- 10% ROBSTRIDE 10P 42 N.m 14 N.m at 50 rpm 48 V 15-60 V 57 mm diameter; 59.1 mm body length 460 g +/- 3 g Not specified 2 magnetic encoders 25:1 125 rpm +/- 10% Rated torque requires the specified heat-sink conditions. ROBSTRIDE04 is rated at 40 N.m with a 345 x 345 mm heat sink, or 35 N.m with a 220 x 200 mm heat sink. Peak torque and no-load speed are separate limits, not a simultaneous continuous operating point. Hardware OverviewMechanical InstallationCheck mounting-hole positions, screw engagement and output clearance against the drawing and the 3D model. Screws must not exceed the available housing thread depth.Power and CAN ConnectionsCheck supply polarity, CAN_H and CAN_L against the connector orientation before wiring. Establish the correct bus termination and unique motor IDs before multi-axis operation.Commission with conservative limits. Secure the mechanism, verify supply and CAN wiring, begin unloaded or lightly loaded, and stop motion before changing control modes. ApplicationRobot joint developmentBuild compact rotary joints for arms, legs, gimbals, and custom motion platforms. The compact 46 mm-class body helps package lightly loaded wrist, gripper and auxiliary axes without placing a larger motor at the end of the mechanism.Humanoid and quadruped researchPrototype controlled joint axes where integrated actuator packaging is useful. Evaluate the 7.75:1 reduction, mass distribution, acceleration torque and impact loading together. Validate each gait or movement cycle on a secured prototype before increasing the operating limits.Robotic armsDevelop shoulder, elbow, wrist, or gripper rotary axes for lab automation and manipulation research. Check the load moment at each arm position rather than using payload mass alone. The 1.6 N.m rated-torque conditions are important for sustained movement and holding tasks.Mobile roboticsIntegrate controlled rotary motion into AMR, AGV, inspection robot, and mechatronic subsystems. Use the 48 V supply and CAN interface as part of the complete subsystem design. Verify cable routing, mounting stiffness and host-side stop behavior before autonomous operation.Education and trainingTeach actuator control, encoder feedback, FOC concepts, and joint tuning workflows. Explore feedback, current commands, velocity and position modes on a bench fixture. Start with the model-specific manual and keep motion limits conservative while learning the control workflow.Custom automationUse in low-speed high-torque fixtures, pan-tilt systems, haptic rigs, and test benches. For repeatable test fixtures and custom axes, log position, speed and current while tuning. Plan a suitable thermal path and motion duty cycle, and verify stop behavior before unattended use. Reference DocumentsManuals and Product Files ROBSTRIDE05 English User Manual ROBSTRIDE05 STEP 3D Model ROBSTRIDE05 Product Literature Software and Development MotorStudio User Guide RobStride Python CAN Examples RobStride Download Center Packing List SKU Item Quantity TB-ROBSTRIDE05 ROBSTRIDE05 actuator motor module 1 TB-ROBSTRIDE-Debug ROBSTRIDE debug board accessory 1 FAQ .faq-accordion details{border-bottom:1px solid #e6eef8;padding:14px 0} .faq-accordion summary{list-style:none;cursor:pointer;font-size:16px;font-weight:700;color:#1f2933;position:relative;padding-right:32px} .faq-accordion summary::-webkit-details-marker{display:none} .faq-accordion summary::after{content:"\203A";position:absolute;right:4px;top:50%;transform:translateY(-50%) rotate(90deg);color:#007fff;font-size:28px;line-height:1;transition:transform .2s ease} .faq-accordion details[open] summary::after{transform:translateY(-50%) rotate(270deg)} .faq-accordion p{margin:12px 0 0;color:#4b5563;line-height:1.65} How does ROBSTRIDE05 compare with ROBSTRIDE-EDULITE05?ROBSTRIDE05 provides 5.5 N.m peak torque, a 7.75:1 reduction and 191 g +/- 3 g mass. ROBSTRIDE-EDULITE05 provides 6 N.m peak torque, a 9:1 reduction and 242 g +/- 3 g mass. Compare the supply voltage, encoder configuration, mounting and heat-sink requirements as well as torque.What distinguishes the ROBSTRIDE05 configuration?The 46 mm-class body and 191 g-class mass make ROBSTRIDE05 useful for low-inertia distal axes. Its machined-steel 7.75:1 reducer differs from the 9:1 powder-metallurgy reducer in EduLite05.What are the rated and peak torque figures?The peak torque is 5.5 N.m. Rated torque is 1.6 N.m at the 100 rpm test point. Heat sinking is required. Peak torque is a transient capability and must not be treated as a continuous holding rating.What power supply does it require?The nominal supply is 48 V DC. The linked user manual specifies a 15-60 V DC operating range. Size the supply, wiring and protection for the complete system, including voltage transients during braking.What encoder feedback and communication does it use?It uses dual magnetic encoders, 14-bit single-turn absolute encoder resolution and a 1 Mbps CAN bus. Check the model-specific command scaling and the installed firmware before integrating it with a host controller.Does the motor option include a debug board?The motor option contains one ROBSTRIDE05 actuator module and excludes the debug board. The Debug Board option contains one debug board accessory and no motor.Which control modes and software resources are available?The user manual covers current, velocity, position and operation-control workflows, along with host-software setup. Use a compatible CAN interface and the correct firmware protocol. The official Python CAN examples cover RS00-RS06 through Linux SocketCAN.Can it run continuously at peak torque?No. Peak torque is a transient output limit. Continuous operation depends on speed, winding temperature, heat sinking, ambient conditions and load cycle. Check the thermal and overload curves for the planned duty cycle.Is it suitable for outdoor or exposed installations?Do not assume this model has the sealed housing of ROBSTRIDE02-IP67. Select enclosure protection, cooling and cable protection for the installation and use a separately specified sealed model where required.What should be checked before mechanical integration?Check the 46 x 46 x 44 mm envelope, the exact mounting drawing, screw depth, output clearance and cable routing. Calculate gravity and acceleration torque, support the mechanism securely, and begin commissioning with conservative current and speed limits.