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-005 96 × 69.6 × 73 mm (T=6mm) Pre-Verified 1:1 Static Files Ready

NEMA 34 High-Torque Industrial CNC Stepper Motor Flange Plate (69.6mm Bolt Pitch, Ø73mm Pilot)

Interactive Parametric 2D & 3D Studio

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

Pre-loaded with NEMA 34 Stepper Motor Plate (96×69.6×73 mm, T=6mm)

1:1 CAD ENGINE READY

NEMA 34 High-Torque Industrial CNC Stepper Motor Flange Plate (69.6mm Bolt Pitch, Ø73mm Pilot)

1CAD Style & Material SetupMechanical

Select CAD Style / Model (36)Search & Filter

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)96 mm

Center Pilot Boss Bore (Ø mm)69.6 mm

Bolt Hole Center Pitch (mm)73 mm

Thickness (T mm)

Laser Kerf (K mm)

3Brand Logo & 1:1 ExportZero Login

2D & 3D Brand Logo Mockup:

📤 Upload Logo

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=6.00mm, K=0.000mm 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 96×96mm === 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 (0.64m) CREASE/SCORE (0.29m)● 6 Loops · Est. Cut: ~40s

1:1 Synced · Blank: 96 × 96 mm

2D 1:1 Unfolded Vector BlueprintBlank: 96 × 96 mm (3.78" × 3.78")

3D Interactive Fold & Orbit (Kraft Board)

80%

0%100%

Camera:

Yaw: -28°Pitch: 24°

⟳ Drag Anywhere to Rotate 3DL=96 × W=69.6 × H=73mm

Faceplate Frame

96.0 × 96.0 mm

Center Pilot Bore

Ø59.52 mm

Bolt Hole Pitch

73.00 mm

Mounting Holes (4×)

Ø6.40 mm

Direct Pre-Generated 1:1 CAD Files

Download Static Ready-to-Cut Files (96×69.6×73 mm)

These static files are pre-calculated for 6mm material thickness. 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 34 Stepper Motor Plate

Parent Parametric Engine: NEMA Stepper Motor Flange →

Target Physical Product Size

Standard NEMA 34 Frame (86 × 86 mm Motor Face) with Ø73.0 mm Registration Pilot Boss

Engineered Internal Cavity & Clearance

Exact 69.6 × 69.6 mm Square Bolt Pattern (4 × M6 Clearance Holes) + Ø73.0 mm Pilot Bore

Recommended Board / Sheet Stock

6.0mm–10.0mm 6061-T6 Aluminum Plate or 6.0mm Mild Steel

Grain / Flute Orientation Rule

Precision Rolled Metal Plate

Production Engineering Note: Engineered for heavy CNC router Z-axis and plasma table rack-and-pinion drives.

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