What are the exact dimensions for a NEMA 17 stepper motor mount?

A standard NEMA 17 stepper motor has a 42.3mm x 42.3mm body, a 22.0mm diameter raised circular pilot boss on the faceplate (enter W = 22), and 4 M3 threaded mounting holes spaced on a 31.0mm x 31.0mm square pitch (enter H = 31). Setting Plate Width L = 52mm to 56mm gives a strong outer frame.

Why is the center hole 22mm on a NEMA 17 plate if the motor shaft is only 5mm?

Stepper motors have a raised circular pilot boss (22.0mm diameter on NEMA 17, 38.1mm on NEMA 23) surrounding the shaft. The mounting plate MUST register tightly around this pilot boss so the motor sits flat against the plate and the shaft remains concentric.

What are the exact settings for a NEMA 23 motor mount?

For a standard NEMA 23 stepper motor, set Faceplate Frame Width L = 70mm, Center Pilot Bore W = 38.1mm (1.50 inches), and Bolt Hole Center Pitch H = 47.14mm (1.856 inches).

Are the pilot bore and 4 bolt holes exported on the CUT layer?

Yes! The outer chamfered plate, center pilot boss bore, and all 4 corner mounting holes are exported as closed LWPOLYLINE loops on the CUT layer, while the square pitch reference box is isolated on the CREASE layer.

TEMPLATE ID: PRE-MEC-002 56 × 22 × 31 mm (T=4mm) Pre-Verified 1:1 Static Files Ready

NEMA 17 Stepper Motor Faceplate Mounting Plate (56x56mm Frame, Ø22mm Pilot Bore, 31mm Pitch)

Interactive Parametric 2D & 3D Studio

Live 2D Dieline, Interactive 3D Fold Preview & Custom Size Generator

Pre-loaded with NEMA 17 Motor Mount Plate (Ø22 / 31mm) (56×22×31 mm, T=4mm)

1:1 CAD ENGINE READY

NEMA 17 Stepper Motor Faceplate Mounting Plate (56x56mm Frame, Ø22mm Pilot Bore, 31mm Pitch)

1CAD Style & Material SetupMechanical

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Material Stock Preset (Auto-Sets Caliper T & Kerf K)

Display Units

Scale Lock

1:1 True Scale

2Dimensions (1:1)Millimeters (mm)

Faceplate Frame Width (L mm)56 mm

Center Pilot Boss Bore (Ø mm)22 mm

Bolt Hole Center Pitch (mm)31 mm

Thickness (T mm)

Laser Kerf (K mm)

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2D & 3D Brand Logo Mockup:

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Print Artwork Bleed Guide:

Embed Spec Sheet & 50mm / 1" Scale Bars (Added on separate DIMENSIONS layer)

Pre-Flight Geometry Audit8/8 PASSED

PASS
Closed Outer Contours: 6 closed LWPOLYLINE cut loop(s) verified
PASS
Zero Duplicate Cut Paths: 120 unique segments (0 laser double-burns)
PASS
Flute & Kerf Tolerance Guard: T=4.00mm, K=0.100mm within structural limits
PASS
ISO Layer Color Separation: CUT (Red), CREASE (Blue), SCORE (Emerald), DIMENSIONS isolated
PASS
1:1 Physical Unit Header: Explicit mm/in SVG viewBox + DXF $INSUNITS=4 + 50mm PDF bar
PASS
Exact 2D Cut Bounding Parity: Cut Bounds 56×56mm === Blank Size
PASS
2D ↔ 3D Kinematic Model Sync: Archetype 'nema_motor_mount' synced (1 3D component(s))
PASS
True Vector Sheet Nesting Sync: 1:1 vector paths mapped to multi-up sheet grid

100%

CUT (0.33m) CREASE/SCORE (0.12m)● 6 Loops · Est. Cut: ~21s

1:1 Synced · Blank: 56 × 56 mm

2D 1:1 Unfolded Vector BlueprintBlank: 56 × 56 mm (2.20" × 2.20")

3D Interactive Fold & Orbit (Kraft Board)

80%

0%100%

Camera:

Yaw: -28°Pitch: 24°

⟳ Drag Anywhere to Rotate 3DL=56 × W=22 × H=31mm

Faceplate Frame

56.0 × 56.0 mm

Center Pilot Bore

Ø22.00 mm

Bolt Hole Pitch

31.00 mm

Mounting Holes (4×)

Ø3.92 mm

Direct Pre-Generated 1:1 CAD Files

Download Static Ready-to-Cut Files (56×22×31 mm)

These static files are pre-calculated for 4mm material thickness and 0.1mm laser kerf. Click any format below to download the pre-built static file, or export custom dimensions directly from the interactive Studio above.

↓ Download .DXF AutoCAD / LightBurn ($INSUNITS=4) ↓ Download .SVG Illustrator / Corel (1:1 mm) ↓ Download .PDF 1:1 Print + 50mm Scale Bar

Product Manufacturing Specification Sheet

Calibrated Physical Clearances & Material Stock for NEMA 17 Motor Mount Plate (Ø22 / 31mm)

Parent Parametric Engine: NEMA Stepper Motor Flange →

Target Physical Product Size

NEMA ICS 16 Standard NEMA 17 Motor Faceplate (42.3mm Motor Body on 56x56mm Plate)

Engineered Internal Cavity & Clearance

Ø22.0 mm Concentric Pilot Boss Registration Bore + Four M3 Corner Bolt Holes on 31.0 mm Square Pitch

Recommended Board / Sheet Stock

4.0mm–6.0mm 6061 Aluminum Plate, Mild Steel, or 5.0mm Cast Acrylic / Delrin

Grain / Flute Orientation Rule

Isotropic metal or cast polymer plate

Production Engineering Note: Fits all standard NEMA 17 stepper motors used on 3D printers, laser engravers, and robotics.

Structural Geometry & Material Reference (NEMA ICS 16 Stepper Motor Faceplate Mounting Standard)

Every CNC router, 3D printer, laser cutter, and robotics actuator relies on precision NEMA stepper motor mounting plates where the concentric Center Pilot Boss Bore (W) registers the motor shaft alignment and the 4-corner Bolt Hole Pitch Square (H) secures the motor body. Under NEMA ICS 16 standards, a NEMA 17 motor requires a 22.0mm center pilot bore with a 31.0mm bolt hole pitch, while a NEMA 23 motor requires a 38.1mm pilot bore with a 47.14mm bolt pitch. Our parametric CAD generator builds a chamfered 1:1 mounting plate in .DXF, .SVG, and .PDF.

4-Bolt Corner Coordinates from Plate Center (X_bolt, Y_bolt)

(X_bolt, Y_bolt) = (X_center +/- Pitch / 2, Y_center +/- Pitch / 2)

Places the 4 mounting holes symmetrically around the center pilot bore at exact horizontal and vertical pitch H.

Diagonal Bolt Circle Diameter (BCD)

BCD = Bolt_Pitch (H) * sqrt(2) = 1.4142 * H

Converts the square NEMA bolt hole spacing into the equivalent circular Bolt Circle Diameter (e.g., 31.0mm pitch = 43.84mm BCD for NEMA 17).

Internal CAD Silo & Related Ready-to-Cut Templates