Complete Stud Welding
KAH 412 Auto Feed Stud Welding Head

KAH 412 Auto Feed Stud Welding Head

The KAH 412 is an automatic stud welding head with a built-in digital display, designed for CD and ARC stud welding with fully automatic stud feeding. It covers M3 to M8, handles stud lengths up to 40 mm, and welds mild steel, stainless, aluminum, and brass, including welding on pre-painted sheet metal where surface conditions limit other auto feed stud welding heads.

The standout on the KAH 412 auto feed weld head is the integrated digital display. Reading piston position to 1/100 mm precision, it gives operators direct confirmation of the exact plunge and lift settings without estimating from a scale. Complete Stud Welding supplies the KAH 412 configured to your stud size, with compatible accessories, feed tubes, and chucks available in the same order.

  • Weld Range M3 to M8 / #4 to 5/16"
  • Piston Position to 1/100 mm
  • Automatic Stud Feed via Feed Tube Through Chuck
  • Prisma Clamping for Fast Weld Head Exchange

KAH 412 Specifications

Weld Range: M3 to M8 / #4 to 5/16" (dia. 3 to 8 mm)
Stud Length: 8 to 40 mm / 0.31" to 1.57"
Stud Material: Mild Steel | Stainless Steel | Aluminum | Brass
Stroke Adjustment Range: 5 mm — arresting
Spring Pressure: Arresting (lock-in adjustment)
Piston Guidance: Zero-play ball linear bearing
Casing: Torsion-resistant aluminum with metal rigid outer shell
Clamping System: Prisma clamping
IP Code: IP 20
Workplace Noise Level: > 90 dB (A) during welding
Dimensions (L×W×H): 375 × 66 × 145 mm / 14.76" × 2.60" × 5.71"
Weight: 3.4 kg / 7.50 lbs

KAH 412 Weld Head Features

The KAH 412 auto feed stud welding head is designed for precision, repeatability, and fast production changeovers in both CD and ARC stud welding applications.

Digital Piston Display to 1/100 mm

The integrated digital display reads welding piston position to 1/100 mm. Setup is precise, documented, and repeatable. No estimating from a scale. Operators see the exact plunge and lift values before the first production shot.

Zero-Play Ball Linear Bearing

The piston runs in a zero-play ball linear bearing with sealed guidance. Every shot tracks the same path. On a CNC auto feed stud welding machine running hundreds of welds per shift, that consistency keeps placement tight without accumulated positional drift.

Prisma Clamping for Fast Head Swaps

The prisma clamping system lets you exchange the full stud welding head without tools. For production lines running multiple stud sizes or base material changes, switching heads takes seconds, not the time required for conventional mount-and-align procedures.

Lock-In Spring and Lift Adjustment

Both spring pressure and lift have arresting lock-in settings. Once dialed in for a stud size and material combination, the settings hold under vibration and production cycle loads.

Welding on Painted Sheet Surfaces

The KAH 412 is specified for welding on painted sheet metal, provided the surface is clean, smooth, flat, and properly grounded. That removes a prep step for fabricators working with pre-painted stock on automotive, appliance, or architectural applications.

Pushbutton Feed Tube Changeover

The feed tube swaps with a pushbutton detent. No tools, no disassembly. Stud size changeovers on a running automatic stud welding head are faster, and the gun is back in production quicker after every size transition.

Get the KAH 412 Configured for Your Line

Complete Stud Welding provides the KAH 412 auto-feed weld head, configured to your specified stud size and equipped from the factory based on your stud dimension requirements. Compatible feed tubes, chucks, and accessories are available in the same order. Call us and get a quote.