Skip to main content
1-800-462-9353
Stud Welding Equipment and Supplies Request a quote
1-800-462-9353
Sunbelt Stud Welding
1-800-462-9353
www.sunbeltstudwelding.com
Download PDF Download PDF
Request a QuoteRequest a Quote

KAH 412 - Automatic Stud Welding Head

The KAH 412 automatic stud welding head is designed for precise, repeatable stud welding on thin sheets from 0.5 mm. It supports M3–M8 studs and 8–40 mm lengths, with optional larger diameters. A zero-play ball linear bearing, digital piston measurement, and adjustable lift and plunge provide a controlled welding setup for automated and CNC stud welding.

Automatic Stud Welding Head - KAH 412

Description / Features

Technology

  • 0.01 mm digital measurement
  • Zero-play linear bearing
  • Integrated measuring system
  • Adjustable lift and plunge
  • Sealed piston guidance
  • Electronic control
  • Automatic stud feeding

Application

  • Especially suitable for thin metal sheets from 0.5 mm.

Structure

  • Zero-play ball linear bearing for guiding the welding piston, to ensure maximum precision and reproducibility for welds
  • Sealed welding piston guidance
  • Integrated lift and spring-loaded adjustment
  • Digital display (1/100 mm) for the position of the welding piston using integrated measuring system
  • Direct reading for the adjusted plunge and lift dimension
  • Pushbutton detent system to facilitate changing the feeding tube
  • Electronically controlled

Safety

  • Lock-in spring adjustment
  • Lock-in lift adjustment
  • High level of security to prevent the selected settings being changed inadvertently
  • Guidance system protected against spatters

Welding

  • Individual adjustment options for optimum welding results
  • Welding on painted sheets possible (clean, smooth and flat surfaces and grounding required)
  • Manual or fully automatic stud feed possible (welding element is automatically pushed through the feed tube in the chuck)

SPECIFICATIONS

Welding range M3 to M8, dia. 3 to 8 mm; #4 to 5/16", dia. #4 to 5/16"
(dia. 10 to 12.7 mm; dia. 3/8" to 1/2" with modification only)
Stud length 8 to 40 mm; 0.31" to 1.57" - (other lengths on request)
Stud type Welding elements with flange according to current standards (other studs on request)
Spring pressure Arresting
IP Code IP 20
Workplace noise level > 90 dB (A) may occur during welding
Dimension LxWxH 375 x 66 x 145 mm, 14.76" x 2.60" x 5.71" with chuck and quick change system
Weight 3.4 kg; 7.50 lbs
Order No. 94-31-412C
Equipped for one standard stud dimension according to customer request

Where the KAH 412 Fits

Application Why It Fits
Thin Sheet Welding Designed for sheets from 0.5 mm.
CNC Stud Welding Compatible with CPW and MPW CNC systems.
Automated Production Supports fully automatic stud feeding.
Precision Stud Placement 0.01 mm display resolution aids setup control.
Automotive Components Suitable for repeatable stud attachment.
HVAC & Electrical Panels Handles thin sheet-metal assemblies.
OEM Production A repeatable setup that suits recurring production work.

KAH 412 vs. KAH 412 LA

Feature KAH 412 KAH 412 LA
Stud Range M3–M8 M3–M8
Stud Length 8–40 mm 8–40 mm
Digital Piston Display Yes, 0.01 mm No
Automatic Length Compensation No Yes
Lift Damper No Yes
Automatic Feeding Yes Yes
Best For Precision setup Variable dimensions

Why Use KAH 412?

  • Direct 0.01 mm piston-position reading
  • Repeatable welding-head setup
  • Precise piston guidance
  • Suitable for thin sheets
  • Manual or automatic feeding
  • CNC and automation integration
  • Quick feeding-tube replacement

FAQs

The KAH 412 automatic stud welding head is a precision welding head for automated stud welding. It uses digital piston measurement, zero-play linear guidance, and adjustable lift and plunge to provide controlled, repeatable stud welding.

The integrated measuring system displays the welding piston position with 0.01 mm resolution. This allows the operator to directly read and set the required plunge and lift dimensions during welding-head setup.

The standard KAH 412 supports M3–M8 studs, or #4–5/16". Studs from 10–12.7 mm (3/8–1/2") can be accommodated with modification.

Yes. The KAH 412 is compatible with CNC production systems such as the CPW and MPW series, making it suitable for automated stud placement and repeatable production welding.

The KAH 412 is designed for sheets from 0.5 mm and provides controlled lift, plunge, and spring adjustment. Its zero-play linear bearing also supports precise piston movement during welding.

Yes. The KAH 412 supports fully automatic stud feeding, with the welding element pushed through the feeding tube directly into the chuck. Manual feeding is also possible.

Depending on the connected power source, the KAH 412 can support contact, gap, short-cycle drawn arc, and drawn arc stud welding for different materials and production requirements.

Yes, welding on painted sheets is possible when the surface is clean, smooth, and flat, with proper grounding. Application suitability should be confirmed based on the coating and welding process.

APPLICABLE STUD WELDERS

Arc Stud Welder - Arc-800
ARC-800
M3 to M12 - #4 to 1/2"
Robust transformer for workshops and construction sites (IP 23).
Automation (optional).
Inverter Arc Stud Welder - IT 1002 AT
IT 1002 AT
M3 to M16 - #4 to 5/8"
All-rounder for automation.
Precise welding results through advanced inverter technology.
Inverter Arc Stud Welder - IT 90 AT
IT 90 AT
M3 to M24 - #4 to 1"
4 outputs (optional), process monitoring and shielding gas.
For critical surfaces (e.g. galvanised).
Inverter Arc Stud Welder - CPW-Series
CPW-Series
M3 to M8 (Dia. 10/12/12,7 mm only possible with modification)
Entry-level CNC stud welding machine with 1 welding head.
High speed with highest positioning accuracy by robust machine base frame.
Working with different work piece heights on a working range of 600 x 420 x 120 mm.
Inverter Arc Stud Welder - MPW-Series
MPW-Series
M3 to M8 (Dia. 10/12/12.7 mm only possible with modification)
High performance CNC stud welding machine (with up to 4 welding heads).
Highest speed possible with high positioning accuracy through rugged design.
Very short set-up time (a.e. automatic calibration of Z-axes).
Network connection.