Harmonic Drive FHA-17C-50-H-C1024 | Hollow-Shaft AC Servo Actuator

Description

Core Product Summary (Brand / Model / Key Attributes)

Harmonic Drive FHA-17C-50-H-C1024 is a size 17 FHA-C series hollow-shaft AC servo actuator with a 50:1 Harmonic Drive strain-wave gear reduction. The H winding designation corresponds to a maximum stationary DC link voltage of 680 VDC, and C1024 identifies an incremental motor feedback system with 1024 line count, zero mark, and C/D track.

The actuator provides a maximum output torque of 39 Nm at the 50:1 ratio, a maximum current of 1.4 Arms, and a hollow-shaft diameter of 18 mm. It has a length of 100 mm without brake and weighs 3.8 kg without brake. The FHA-C design provides a hollow output shaft for routing cables or concentric shafts through the actuator center.

Key Technical Specifications

Detailed Product Overview

The Harmonic Drive FHA-17C-50-H-C1024 is a compact rotary servo actuator that combines a brushless servo motor, a 50:1 Harmonic Drive strain-wave gear, and an incremental C1024 feedback system in a hollow-shaft FHA-C housing. Its hollow output shaft has an 18 mm diameter, allowing cables, pneumatic lines, or a concentric shaft to pass through the center of the actuator.

The 50:1 reduction ratio produces a maximum output torque of 39 Nm and a maximum current requirement of 1.4 Arms for this size 17 H-winding configuration. The actuator uses a six-pole-pair motor and is intended to operate with a compatible external servo drive; the C1024 feedback system provides an incremental motor-feedback signal with zero mark and C/D track.

The H winding designation corresponds to a maximum stationary DC link voltage of 680 VDC. Drive selection must therefore match the actuator winding, feedback type, connector arrangement, and required cable length. Harmonic Drive documentation identifies the FHA-17C-50-H-C1024 as a standard configuration in the FHA-C project-planning documentation.

Mechanically, the actuator has a 118 mm overall diameter, a 70 mm h7 output-flange pilot, and a 25 mm H7 hollow-shaft pilot. It is 100 mm long without a brake and weighs 3.8 kg without a brake. These dimensions support integration into compact rotary axes where a hollow bore and high reduction ratio are required.

System Compatibility & Integration Requirements

FHA-17C-50-H-C1024

FHA-17C-50-H-C1024

FHA-17C-50-H-C1024

Engineering Selection Highlights

• The FHA-17C-50-H-C1024 provides a 50:1 reduction ratio, so required output speed and torque must be checked against the actuator’s 39 Nm maximum-torque rating.
• Its hollow-shaft diameter of 18 mm allows cables or a concentric shaft to pass through the actuator center, which is a primary reason to select the FHA-C hollow-shaft design.
• The H winding requires a servo drive compatible with a maximum stationary DC link voltage of 680 VDC.
• The C1024 feedback system is an incremental encoder with zero mark and C/D track; the servo drive must support this feedback type.
• The actuator’s 1.4 Arms maximum current and six-pole-pair motor must be matched to the servo-drive current rating and motor-parameter configuration.
• Its 118 mm diameter, 100 mm length, and 3.8 kg weight without brake should be included in machine envelope, inertia, and mounting calculations.
• A brake version is available in the FHA-C range; the brakeless FHA-17C-50-H-C1024 requires an external holding method where vertical or unpowered holding is required.

Dimensions, Mounting & Connection Notes

FAQ

What is the Harmonic Drive FHA-17C-50-H-C1024?
It is a Harmonic Drive FHA-C series size 17 hollow-shaft AC servo actuator with a 50:1 strain-wave gear reduction and C1024 incremental motor feedback.

What gear ratio does it provide?
It provides a 50:1 reduction ratio.

What is its maximum output torque?
Its documented maximum output torque is 39 Nm.

What does the H designation mean?
The H winding designation corresponds to a maximum stationary DC link voltage of 680 VDC.

What does C1024 mean?
C1024 identifies an incremental motor feedback system with 1024 line count, a zero mark, and a C/D track.

Does it have a hollow shaft?
Yes. It has an 18 mm hollow-shaft diameter, allowing cables or a concentric shaft to pass through the actuator center.

Does this model include a brake?
The identified FHA-17C-50-H-C1024 configuration is the non-brake version. The FHA-C range also includes a brake option.

What are its dimensions and weight?
It is 118 mm in diameter and 100 mm long without a brake, and weighs 3.8 kg without a brake.

Verification & Troubleshooting Notes

• Verify the complete ordering code, FHA-17C-50-H-C1024, including winding and feedback designations, before configuring a servo drive or ordering a replacement.
• Confirm that the servo drive supports the H winding voltage class, C1024 incremental feedback, and the actuator’s six-pole-pair motor configuration.
• For encoder or commutation faults, inspect the motor feedback cable, M23 connector, shielding, and drive feedback configuration before replacing the actuator.
• For torque or overheating symptoms, compare the application’s torque, speed, duty cycle, and acceleration requirements with the actuator’s 39 Nm maximum-torque rating and drive current limit.
• Confirm that the hollow shaft, output flange, and mating pilot surfaces are correctly supported and aligned; do not use the hollow bore as an unauthorized load path.
• If a brake is required for vertical axes or unpowered holding, use an FHA-C brake-equipped configuration rather than assuming the non-brake actuator provides holding torque.
• Follow Harmonic Drive FHA-C installation documentation for cable routing, connector handling, and drive commissioning; do not modify encoder or motor cabling in ways not supported by the documentation.