42mm Permanent Magnet Stepper Motor Series, 12V Bipolar Dual Shaft
Related Product Documents & Downloads
| Document Description | File Details |
|---|---|
| KC-42BY212 12V 42mm Bipolar Stepper Motor Outline Drawing & Specifications | PDF · English · 125 KB |
42mm Permanent Magnet Stepper Motor KC-42BY212
The KC-42BY212 is a 42mm permanent magnet stepper motor configured for 12 V bipolar drive, with a dual output shaft and a brass pinion gear on the front shaft. Its 7.5° stepping geometry and short 23 mm motor body support integration where controlled incremental motion and a defined mechanical transmission interface are required.
Engineering Configuration
This permanent magnet stepper motor uses a two-phase bipolar winding with dual shafts, allowing the rear shaft to remain available for coupling, indication, sensing, or application-specific mechanisms. The front brass gear provides a direct interface to a mating gear train without requiring a separate pinion installation step.
Electrical And Performance Specifications
| Parameter | Specification |
|---|---|
| Model | KC-42BY212 |
| Product Type | 2-phase bipolar permanent magnet stepper motor |
| Rated Voltage | 12 V DC |
| Coil Resistance | 10 Ω ± 10% / phase at 20 °C |
| Number Of Phases | 2 phases |
| Step Angle | 7.5° / step |
| Excitation Method | 2-2 phase excitation |
| Drive Mode | Bipolar drive |
| Pull-Out Torque | 100 g·cm min. at 600 PPS |
| Max. Response Frequency | More than 500 PPS |
| Max. Starting Frequency | More than 400 PPS |
| Insulation Class | Class E for coils |
| Insulation Strength | 100 V AC for one second |
| Insulation Resistance | 100 MΩ at 500 V DC |
| Operating Temperature Range | 0 °C to +55 °C |
Mechanical, Wiring And Gear Specifications
| Parameter | Specification |
|---|---|
| Motor Diameter | Ø42 mm |
| Motor Body Length | 23.0 mm max. |
| Shaft Configuration | Dual output shaft |
| Shaft Diameter | Ø3 mm |
| Front Shaft Length | 14 ± 0.2 mm |
| Rear Shaft Length | 14 ± 0.2 mm |
| Pilot Diameter | Ø10 mm, +0 / −0.06 mm |
| Pilot Projection | 1.5 mm |
| Mounting Holes | 3 × M2.5 |
| Mounting Hole PCD | Ø35 ± 0.06 mm |
| Mounting Hole Spacing | 3 × 120°, equally spaced |
| Lead Wire | UL1571 AWG28 |
| Lead Wire Length | 60 ± 5 mm |
| Connector | XH-6P |
| Winding Leads | A, A̅, B, B̅ |
| Gear Teeth | 13 teeth |
| Gear Module | 0.50 |
| Pressure Angle | 20° |
| Addendum Circle Diameter | Ø7.5 mm, +0 / −0.1 mm |
| Gear Material | Brass |
KC-42BY212 Outline Dimensions And Mounting Interface
Performance Advantages
- The 42 mm frame and 23 mm body length provide a shallow motor profile for mechanisms with limited axial installation space.
- Dual output shafts provide two mechanical access points for transmission, feedback components or auxiliary couplings.
- The 7.5° step angle supports repeatable incremental positioning without adding a reduction gearbox to the motor assembly.
- The 13-tooth brass pinion creates a defined transmission interface for integration with a compatible mating gear.
- The three-hole mounting pattern and pilot diameter provide clear mechanical references for OEM bracket and housing design.
Payment And Shipping
Payment
- Quotation Confirmation: Payment arrangements are confirmed with the quotation or proforma invoice before production proceeds.
- Order Reference: Model, quantity, electrical configuration and mechanical requirements should be confirmed before payment.
Shipping
- Shipping Method: The shipping method is selected according to order quantity, destination and project requirements.
- Shipment Schedule: Production and dispatch timing are confirmed with the order rather than treated as stock-based retail delivery.
- Export Documentation: Required commercial and shipping information should be confirmed with the sales contact before dispatch.
KC-42BY212 Product FAQ
Is KC-42BY212 A Bipolar Stepper Motor?
Yes. It is a two-phase bipolar design intended for bipolar drive control.
What Is The Purpose Of The Dual Output Shaft?
The front and rear shafts provide two mechanical interfaces. This can simplify integration when the primary transmission uses the front shaft while the rear shaft is reserved for a coupling, indicator or sensing arrangement.
Does The Front Shaft Include A Pinion Gear?
Yes. The supplied brass pinion has 13 teeth, a 0.50 module and a 20° pressure angle for integration with a compatible mating gear.
How Is The Motor Mounted?
The mounting face uses three M2.5 holes positioned at 120° intervals on a Ø35 mm PCD, with a Ø10 mm pilot for mechanical location.
What Should Be Checked Before Integrating This 42mm Stepper Motor?
Confirm the bipolar driver, 12 V electrical requirement, shaft orientation, mounting geometry, available axial space and mating gear geometry against the equipment design.
