Mitsubishi HC-SFS53 AC Servo Motor — 500W MELSERVO J2S 3,000 rpm, New In Box | Fast Delivery | In Stock

Not every application needs the 2,000 rpm torque curve of the HC-SFS52. When the machine runs axes at higher rotational speeds — wider operating speed bands, faster rapid traverse, higher throughput in multi-cycle operations — the HC-SFS53 is where you go. Same 500W output, same 130 × 130 mm frame, same 17-bit absolute encoder as others in the HC-SFS medium-inertia family, but optimized for 3,000 rpm continuous operation. New in original Mitsubishi Electric packaging, in stock for fast shipment.

Technical Specifications

HC-SFS53 vs HC-SFS52 — The Speed Distinction

Both motors carry the same 500W output and mount on the same 130 × 130 mm flange. The difference is in how that 500W is delivered. The HC-SFS52 is a 2,000 rpm rated motor — it produces a higher rated torque (2.39 Nm) and is tuned for applications where load force is the dominant requirement at moderate speeds. The HC-SFS53 runs at 3,000 rpm rated (1.59 Nm), suited to applications that benefit from a wider speed range, faster axis traverse, or better cycle time performance at the top end of the speed profile.

For machine tool feed axes, conveyor drives, and material handling axes where rapid traverse speed directly affects cycle time, the 3,000 rpm variant is the correct engineering selection. Both variants share the same 130 mm frame and are supported by the same MR-J2S-60A/B servo amplifier — so machine designs using the HC-SFS53 can accommodate the HC-SFS52 in future reconfigurations without changing the mechanical installation.

17-Bit Absolute Encoder — 131,072 ppr

The encoder inside the HC-SFS53 is not a simple pulse counter. It is a 17-bit absolute optical encoder delivering 131,072 distinct position values per shaft revolution via serial link to the servo amplifier. What this means operationally:

Position is always known. With the amplifier battery installed, the encoder maintains shaft position data through any number of power cycles. Machine startup does not require a reference return sequence — every axis powers on with its position already confirmed. For production environments that cycle machine power regularly, or machines with multiple servo axes, the time saved across a year of operation adds up quickly.

131,072 positions per revolution gives the position feedback loop fine enough resolution to support precise interpolated motion, smooth following of complex trajectories, and repeatability that satisfies the demands of CNC machine tool and automated assembly applications alike.

Oil Seal and IP65 — Industrial-Grade Sealing

The shaft bore of the HC-SFS53 carries a factory-installed oil seal at the drive-end face. On machine tools and production machinery, the shaft entry point is where coolant mist, cutting fluid, and fine metallic particles have the shortest path to the bearing cavity and encoder assembly. The oil seal closes that path.

The IP65-rated enclosure (complete dust exclusion, protection against water jets from any direction) applies to the motor body. Together these two features make the HC-SFS53 suitable for direct installation on machine tools and production equipment without secondary environmental enclosure provisions — the standard requirement for this power class in CNC applications.

Compatible Servo Amplifiers

The HC-SFS53 pairs with the Mitsubishi MR-J2S-60A (analog/pulse-train command) or MR-J2S-60B (SSCNET digital network command) servo amplifiers, both rated at the 600W class to cover the 500W motor. Additionally, the MR-J2S-60CP (with built-in positioning function) is supported for single-axis positioning applications.

For multi-axis machine designs controlled by Mitsubishi's Q-series or A-series motion controllers via SSCNET, the MR-J2S-60B enables synchronized multi-axis operation over the high-speed fiber optic network. For single-axis or PLC-commanded systems using pulse-train or analog reference, the MR-J2S-60A is the standard choice.

Application Fit

The HC-SFS53's combination — 500W, 3,000 rpm, medium inertia, 130 mm frame, IP65 with oil seal — makes it the standard specification for a wide range of production machine axes:

CNC machine tool feed axes — X, Y, Z axes on smaller vertical machining centers and turning centers where the 3,000 rpm rating supports the full rapid traverse range and the 130 mm flange fits standard ballscrew-coupled mounting designs

CNC lathe X and Z axes — particularly in machines that run aggressive turning cycles where axis speed range matters as much as peak torque

Conveyor and material handling drives — chain conveyor drives, belt drives, and indexing mechanisms where 500W provides adequate torque margin and 3,000 rpm supports the required linear speed at the mechanism's gear ratio

Rotary table and 4th axis drives — secondary motion axes on machining centers where the 130 mm frame fits standard rotary table mounting interfaces

Automated assembly machines — transport and positioning axes on multi-station assembly equipment where repeatable positioning at moderate speeds and compact motor dimensions are both required

Industrial robots — elbow and forearm joints on medium-payload SCARA and articulated robots where the medium-inertia characteristic provides stable servo response under varying arm configurations

HC-SFS53 Suffix Variants

The HC-SFS53 base unit is available in brake and keyed shaft configurations:

• HC-SFS53 — straight shaft, no brake (this listing)
• HC-SFS53B — with spring-applied electromagnetic brake
• HC-SFS53K — keyed shaft
• HC-SFS53BK — electromagnetic brake and keyed shaft

All variants share the same 500W output, 3,000 rpm rated speed, 17-bit absolute encoder, IP65 protection, and 130 × 130 mm flange. Verify the suffix matches the installation requirement — particularly whether a shaft-locking brake is needed for vertical axis or safety hold applications.

FAQ

Q1: What is the compatible servo amplifier for the HC-SFS53?

The HC-SFS53 pairs with the MR-J2S-60A (analog/pulse-train command) or MR-J2S-60B (SSCNET network command), both rated at 600W within the MELSERVO J2S series. The MR-J2S-60CP with built-in positioning function is also a compatible option for standalone single-axis positioning systems.

Q2: What is the difference between the HC-SFS53 and HC-SFS52?

Both motors are 500W, 130×130mm flange, IP65 motors in the HC-SFS medium-inertia series. The key difference is rated speed and torque: the HC-SFS52 is rated at 2,000 rpm with 2.39 Nm, while the HC-SFS53 is rated at 3,000 rpm with 1.59 Nm. Select the 53 when higher operating speed or faster axis traverse is required; select the 52 when higher torque at moderate speeds is the priority.

Q3: Does the HC-SFS53 support absolute position retention after power-off?

Yes. The built-in 17-bit encoder is an absolute type. With a battery (A6BAT) installed in the servo amplifier, multi-turn position data is preserved when the machine is powered down. On the next startup, all axis positions are immediately available — no homing or reference return cycles required.

Q4: What does the oil seal provide and when is it needed?

The factory-fitted oil seal at the motor's drive-end shaft bore prevents cutting fluid, coolant mist, and fine particulate contamination from entering the bearing and encoder cavity through the shaft penetration. It is standard on the HC-SFS53 and is the reason this motor is suitable for direct installation on machine tools without additional motor protection. On clean-room or non-coolant environments the seal is simply passive — it adds no drawback and requires no maintenance.

Q5: Is the HC-SFS53 still manufactured, and what is its current-generation equivalent?

The HC-SFS series is part of Mitsubishi's MELSERVO J2S generation, which has been superseded by the J4 and J5 series. New-in-box HC-SFS53 units remain available for machine maintenance, spare parts stock, and compatible replacement on existing J2S-platform installations. The current-generation equivalent from Mitsubishi is the HG-JR53 (MELSERVO J4), which offers a 22-bit encoder and IP67 protection but requires the newer MR-J4 series amplifiers.