Description
Core Product Summary
The Parker DR1008B-230 is a brushless direct-drive servo motor from the Parker Compumotor Dynaserv DR-B Series. It is a 230 VAC motor intended for gearless rotary positioning, with an integral resolver providing feedback to the compatible Dynaserv drive.
The DR1008B-230 provides 8 Nm peak torque and a rated speed of 2.0 rps at 230 VAC. Its outer-rotor construction allows the load to be mounted directly to the rotating housing, eliminating the gearbox from the mechanical transmission path. The motor requires a compatible Dynaserv DR drive, motor and resolver cabling, and appropriate mounting hardware; it is not supplied with a power cable.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Parker Hannifin / Compumotor |
| Model | DR1008B-230 |
| Product type | Brushless direct-drive servo motor |
| Series | Dynaserv DR-B Series |
| Input voltage version | 230 VAC |
| Peak torque | 8 Nm |
| Rated speed, 230 VAC | 2.0 rps |
| Feedback type | Integral brushless resolver |
| Motor construction | Outer-rotor, gearless direct-drive design |
| Maximum resolution | 507,904 steps/rev |
| Rotor inertia | 15 × 10⁻³ kg·m² |
| Maximum power consumption | 0.7 kVA |
| Motor weight | 6 kg |
| Maximum static axial compression load | 6,744 lb |
| Maximum static axial tension load | 2,248 lb |
| Maximum static overhung load | 148 ft-lb |
| Motor operating temperature | 0 to +45 °C maximum |
| Motor storage temperature | −20 to +85 °C |
| Motor humidity | 20 to 85% RH, non-condensing |
| Motor and resolver cable length | 120 in / 3,048 mm |
| Mechanical brake | Not available for DR1008B |
The DR1008B data is listed in Parker’s DR Series motor data table, and the -230 suffix identifies the 200–230 VAC input-voltage version.
DR1008B-230
DR1008B-230
Engineering Selection Highlights
- 8 Nm peak torque → establishes the short-duration torque capacity; Parker’s DR Series guidance states that continuous torque is approximately two-thirds of peak torque.
- 2.0 rps rated speed at 230 VAC → defines the motor’s normal operating-speed boundary for the 230 VAC configuration.
- Integral resolver feedback → requires a compatible Dynaserv drive capable of using resolver feedback for commutation and closed-loop control.
- Outer-rotor construction → the driven load mounts to the upper rotor surface, while the stator mounts to a rigid stationary machine base.
- 3,048 mm motor and resolver cables → the supplied cable length must fit the drive location; Parker limits motor and feedback cables to 30 m.
- No mechanical-brake option for DR1008B → an external braking or load-holding approach must be engineered separately where required.
- Not dust-proof, watertight, or oil-proof → the installation environment must protect the motor from contamination and liquid exposure.
System Compatibility & Integration Requirements
| Item / Dependency | Verified Compatibility or Requirement | Practical Note |
|---|---|---|
| Drive | Compatible Parker Dynaserv DR drive | The motor uses resolver feedback and is part of a Dynaserv motor-drive system. |
| Controller | Compumotor controllers, including 6K and 6000 Series interfaces | Parker documents compatibility with Compumotor controllers and available interface cables. |
| Position command | Step-and-direction input | The DR drive accepts step-and-direction commands for position control. |
| Velocity command | ±10 V DC analog input | Velocity mode uses a ±10 V DC command signal. |
| Torque command | ±8.5 V DC analog input | Torque mode uses a ±8.5 V DC command signal. |
| Feedback | Integral brushless resolver | The resolver is integral to the motor and connects to the Dynaserv drive. |
| Motor cable | 50-pin Honda connector; user-supplied power cable | The motor is shipped with a 50-pin Honda connector, while the power cable must be supplied by the user. |
| Cable length | Maximum 30 m for motor and feedback cables | Cable routing must remain within this documented limit. |
| Mounting | Rotor carries the load; stator mounts to the machine base | The outer-rotor arrangement requires correct orientation and a rigid stator mounting surface. |
The DR Series is documented as compatible with Compumotor controllers, and the DR drive supports step-and-direction position control as well as analog velocity and torque commands.
Dimensions, Mounting & Connection Notes
| Item | DR1008B-Specific Data |
|---|---|
| Dimension A | 3.35 ± 0.04 in / 85 ± 1 mm |
| Stator diameter | 5.91 +0/−0.012 in / 150 +0/−0.3 mm |
| Rotor-related dimension | 2.83 ± 0.008 in / 72 ± 0.2 mm |
| Rotor mounting holes | 6 × M5, equally spaced around the circumference |
| Motor and resolver cable length | 120 in / 3,048 mm |
| Mounting orientation | Load on rotor; stator on rigid stationary base |
| Drilling restriction | Do not drill holes into the Dynaserv motor |
The DR1008B uses six M5 mounting holes on the rotor, unlike most other DR-B models, which use nine M6 holes. The load must be attached to the rotor’s upper mounting surface, and the stator must be secured to a rigid stationary machine base.
Parker also documents that the motor must not be drilled. This is a direct mechanical-installation restriction for adapting brackets, couplings, or other hardware.
Detailed Product Overview
The Parker DR1008B-230 is a direct-drive brushless servo motor designed to rotate a load without a gearbox. Its Dynaserv architecture combines the motor, integral resolver, compatible microprocessor-based drive, and power supply into a closed-loop motion system. The motor’s resolver provides the feedback required for commutation and position control, while the drive processes the commanded motion and controls the motor output.
The -230 suffix identifies the 200–230 VAC input-voltage version. For the DR1008B, Parker lists a rated speed of 2.0 rps at 230 VAC and a peak torque of 8 Nm. The catalog notes that DR Series speed-torque curves show peak torque and that continuous torque is approximately two-thirds of that value, so load sizing must distinguish between short-duration peak demand and sustained torque.
The motor is an outer-rotor design. The rotating outer housing carries the load, while the stationary stator is mounted to the machine structure. This arrangement allows direct coupling to a rotary table, indexing axis, or other rotating load and avoids the backlash and compliance associated with a gear reducer. Parker’s DR-B Series guidance also specifies maximum static axial and overhung-load limits, which must be checked against the actual mechanical arrangement.
Integration requires the correct Dynaserv drive and cabling. The motor includes an integral resolver and is supplied with motor and resolver cables of 120 in / 3,048 mm. Parker states that the Dynaserv is not shipped with a power cable, so the user must provide it; the motor’s 50-pin Honda connector is used to construct the connection to the indexer, servo controller, or other input/output equipment. Motor and feedback cables must not exceed 30 m.
Control flexibility comes from the associated DR drive rather than from the motor alone. The system supports position control through step-and-direction commands, velocity control through a ±10 V DC command, and torque control through a ±8.5 V DC command. The DR drive also provides protection against open and short circuits, overcurrent, overvoltage, and overtemperature, with front-panel diagnostic indication.
Mechanical and environmental limits are material to selection. The DR1008B does not support the optional mechanical brake, and the motor is not dust-proof, watertight, or oil-proof. It must therefore be installed in a protected location, with the stator rigidly mounted, the load correctly attached to the rotor, and cable lengths and load limits kept within the documented values.
Applications & System Role
The DR1008B-230 is the rotary actuator in a Dynaserv direct-drive servo system. It replaces a conventional servo motor and gearbox arrangement by coupling the load directly to the motor’s outer rotor, with the resolver providing position feedback for the closed-loop drive.
Parker documents Dynaserv systems for rotary indexing, turntables, assembly and handling equipment, robots, inspection and measuring equipment, feed-to-length machinery, and machining-center work tables. These are documented application categories for the Dynaserv family, not claims about a particular customer installation.
For a DR1008B-230 specifically, the relevant fit is a compact, low-speed rotary axis requiring 8 Nm peak torque and direct rotary motion without a gearbox. Its 2.0 rps rated speed and resolver-based feedback make it suitable for controlled rotary positioning rather than high-speed continuous rotation.
FAQ
What is ker ?
The Parker DR1008B-230 is a 230 VAC Dynaserv DR-B Series brushless direct-drive servo motor with an integral resolver for closed-loop motion control.
How much torque does it provide?
It provides 8 Nm peak torque. Parker’s DR Series guidance states that continuous torque is approximately two-thirds of peak torque.
What is its rated speed?
The DR1008B-230 has a rated speed of 2.0 rps at 230 VAC.
Does it include a gearbox?
No. It is a gearless direct-drive motor; the load is mounted directly to the motor’s outer rotor.
What feedback does it use?
It uses an integral brushless resolver, which connects to the compatible Dynaserv drive for feedback and closed-loop operation.
Which drive is required?
A compatible Parker Dynaserv DR drive is required. The DR drive accepts step-and-direction position commands, ±10 V DC velocity commands, and ±8.5 V DC torque commands.
Does the DR1008B-230 include a mechanical brake?
No. Parker states that a mechanical brake is not available for the DR1008B.
What installation restrictions apply?
The load must be mounted to the rotor, the stator to a rigid stationary base, and holes must not be drilled into the motor. The motor is not dust-proof, watertight, or oil-proof.
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