NEMA ICS 16 Stepper Motor Faceplate Mounting Standard 1:1 DXF · SVG · PDF Default Spec: 56 × 22 × 31 mm (T=4mm)

Parametric NEMA 17 / 23 / 34 Stepper Motor Mount & Bolt-Circle Flange CAD Generator

1:1 CAD ENGINE READY

Parametric NEMA 17 / 23 / 34 Stepper Motor Mount & Bolt-Circle Flange CAD Generator

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)56 mm

Center Pilot Boss Bore (Ø mm)22 mm

Bolt Hole Center Pitch (mm)31 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=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

Structural & Manufacturing Specification Summary

Quick Default Download: ↓ .DXF ↓ .SVG ↓ .PDF

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.

CUT LAYER #EF4444 (ACI 1)

CREASE / BEND #2563EB (ACI 5)

SCALE HEADER $INSUNITS=4 (1:1 mm)

SIMULATION 2D + 3D + Nesting

Pre-Calibrated Industry Sizes (3)

Standard Product Presets Built on This NEMA Stepper Motor Flange Engine

56 × 22 × 31 mm (T=4mm)

NEMA 17 Motor Mount Plate (Ø22 / 31mm)

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

Load Preset Spec →

68 × 38.1 × 47.14 mm (T=6mm)

NEMA 23 Stepper Mount Plate

NEMA ICS 16 Standard NEMA 23 Motor Faceplate (56.4mm Motor Body on 68×68mm Heavy Plate)

Load Preset Spec →

96 × 69.6 × 73 mm (T=6mm)

NEMA 34 Stepper Motor Plate

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

Load Preset Spec →

Structural Geometry & Allowances

Mathematical Blank & Tolerance Formulas

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).

Pre-Press & Production SOP

Step-by-Step Export & Assembly Guide

1 Enter Faceplate Outer Frame Width (L, e.g., 56mm for NEMA 17 or 70mm for NEMA 23), Center Pilot Bore Diameter (W, e.g., 22mm for NEMA 17 or 38.1mm for NEMA 23), and Bolt Hole Center Pitch (H, e.g., 31mm for NEMA 17 or 47.14mm for NEMA 23).
2 Inspect the closed outer chamfered frame, concentric pilot bore, 4 corner bolt holes, and blue reference pitch square.
3 Preview the 3D extruded faceplate in the 3D Fold Preview tab.
4 Export as 1:1 .DXF or .SVG with Dimensions unchecked for instant CNC milling, laser cutting, or waterjet profiling.

Board Caliper, Laser & Die-Cutting Reference

Material Thickness, Creasing Matrix & Laser Kerf Settings

Material / Sheet Stock	Caliper Thickness (T)	Recommended Tooling / Laser Setup	Allowance / Kerf Spec	Primary Use Case
NEMA 17 Standard (3D Printers / Small Laser Axes)	3.0 – 6.0 mm Aluminum or Acrylic	Set L=50mm, W=22mm (Pilot Bore), H=31mm (Bolt Pitch)	M3 Mounting Screws (Ø3.2mm holes)	Extruder mounts, CoreXY motion plates, camera sliders
NEMA 23 Standard (Benchtop CNC Routers / Mills)	6.0 – 10.0 mm 6061 Aluminum or Mild Steel	Set L=70mm, W=38.1mm (Pilot Bore), H=47.14mm (Bolt Pitch)	M5 Mounting Screws (Ø5.2mm holes)	Leadscrew gantry plates, plasma table drives, rotary axes
NEMA 34 Standard (Industrial CNC Machines)	8.0 – 12.0 mm Steel or Aluminum Plate	Set L=96mm, W=73.0mm (Pilot Bore), H=69.6mm (Bolt Pitch)	M6 Mounting Screws	Heavy CNC mills, industrial conveyors, high-torque winches

Packaging & CNC Engineering FAQ

Frequently Asked Questions — NEMA Stepper Motor Flange

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.

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