Compact 42 mm frame
The rear-mounted electronics preserve a compact square motor interface for machines with limited installation space.
SPBI42RC 42 mm Backpack Integrated Closed-loop Stepper Motor
Backpack Integrated Closed-loop Stepper Motor
SPBI42RC is a 42 mm backpack integrated closed-loop stepper motor with 20–36 VDC supply, 2.2 A peak output and four verified motor options for compact automation equipment.
Positioning accuracy
High torsional rigidity and constant torsional backlash over the entire gearbox service life ensure consistently high performance
Compactness
High torque density thanks to high performance and short design
Low maintenance
Highest quality standards for a long service life and extended maintenance intervals
Technical data
Compact backpack integration
Closed-loop motion control in a 42 mm backpack package
The 42 mm backpack integrated closed-loop stepper motor combines a compact hybrid stepper motor with rear-mounted drive electronics. Its 20–36 VDC supply range and four verified motor options support space-conscious automation equipment.
Closed-loop control
Integrated feedback and drive electronics support controlled positioning while reducing separate control components.
Four motor options
Verified 33, 47 and 57 mm motor-body lengths provide holding torque choices from 0.20 to 0.67 N·m.
Engineering information
Technical data
Electrical ratings and model configurations for the BI42RC backpack integrated closed-loop stepper motor.
42 mmFrame size
20–36 VDCSupply voltage
2.2 ApeakPeak output current
12–24 VInput signal voltage
Electrical
Electrical operating parameters
| Parameter | Unit | Value |
|---|---|---|
| Peak output current | A | 2.2 |
| Supply voltage | VDC | 20–36 |
| Single-ended input signal voltage | V | 12–24 |
| Maximum output signal logic current | mA | 100 |
| Maximum output signal pull-up voltage | VDC | 30 |
Motor options
BI42RC model selection
Four verified configurations provide holding torque options from 0.20 to 0.67 N·m.
| Model | Step angle | Leads | Current (A) | Holding torque (N·m) | Body length (mm) |
|---|---|---|---|---|---|
| HD-42H033H-0504 | 1.8° | 4 | 0.42 | 0.20 | 33 |
| HD-42H033H-1334 | 1.8° | 4 | 1.33 | 0.23 | 33 |
| HD-42H047H-1504 | 1.8° | 4 | 1.50 | 0.55 | 47 |
| HD-42H057H-1504 | 1.8° | 4 | 1.50 | 0.67 | 57 |
Backpack architecture
Integrated control with a compact motor footprint
The drive electronics mount behind the 42 mm motor, creating a practical integrated axis component for compact machine layouts.
- Motor, feedback and drive electronics in one assembly
- 20–36 VDC power supply range
- 12–24 V single-ended input signal interface
Application fields
Designed for compact precision automation
The backpack configuration is suited to equipment requiring a compact motor frame, integrated control and simplified machine wiring.
Laboratory automation
Sample handling, dosing and compact analytical instruments.
Precision inspection
Camera positioning, optical adjustment and metrology mechanisms.
Semiconductor equipment
Auxiliary transfer, alignment and compact positioning axes.
Compact robotics
Lightweight axes, end effectors and distributed automation modules.
System integration
Verified interfaces for machine design
Select the motor configuration according to the required holding torque, body length, winding current and available installation envelope.
Power supply20–36 VDC
Peak output current2.2 A
Single-ended input signal12–24 V
Output signal limits100 mA / 30 VDC pull-up
Mechanical format42 mm backpack integrated package
Discuss your compact motion requirement with our engineers.
Share your voltage, load, speed, signal and installation requirements for product selection and integration support.
Contact us
Would you like to learn more about our solutions?
We would be happy to advise you—personally, competently, and tailored to your requirements.
Perfection in a new dimension
Further Information
Short delivery times available for selected product configurations.
The TP+ HIGH TORQUE enables maximum torque density and maximum torsional rigidity—ideal for demanding applications with dynamic load changes and high positioning accuracy.
alpha Advanced Line gearboxes with increased durability and food-grade lubrication available.
The TP+ for coordinated pinion-rack systems for medium to high requirements. Typical areas of application in wood, plastic, and composite processing, in machining centers, or in automation.
With cynapse® and smart services, you can unleash the full potential of your drive system: sensor data is processed, visualized, and analyzed intelligently. Find out how the combination of gearboxes with cynapse® and our Smart Services can make your digital production faster, safer, and more efficient.
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