Chain Welding Machines
for Resistance Butt Welding Round Steel Chains

Series
KEH x.2

Series
KEH x.2

T Welding area

Our Accomplishments for your Benefit
Robust machine design for the production of highstrength
chains over a long period of time
J Reduction of set-up and tooling times due to parameter
database
JKEH 3.2, KEH 4.2, KEH 5.2, KEH 7.2
J Increase of tensile strengths by 20%, i.e. from 750 to900 N/mm², and in case of small wire diameters to1,000 N/mm², for processing modern stainless steels
J Servodrive of the control shaft with individually adjustable rpm numbers for welding, deburring, and transport
KEH 3.2, KEH 7.2:
J Output of machine increased by ca. 15 – 20% due toservodrive of the control shaft with individually adjustable
rpm numbers for welding, deburring, and transport
KEH 7.2:
J Operating range increased to 18 mm wire thickness

2 WAFIOS Precision Machinery for Wire and Tube

T Chain feed with chain feed
monitoring and chain brake

T Chain transport

Design Features
Latest control technology due to servo technology for easy
operation of the machine
J The following machine functions are driven separately byservomotors:– Control shaft– Upsetting– Chain transport– Up/down movement of the chain rotator gripper
J Designed for higher tensile strengths of modern chain materials
J Chain transport decoupled from control shaft, in-processadjustment of the transport stroke and the transport gripper
position on the control panel, i.e. outside the hazard area
J Upsetting system decoupled from control shaft
J Freely programmable upsetting sequence, graphical programming on monitor, therefore no mechanical upsetting cam
required anymore
JT KEH 4.2

Quality, Reliability, and Effi ciency –WAFIOS KEH x.2 Chain Welding Machines

T Programming – Input of chain dimensions

Application
Chain welding machines of the KEH x.2 series are used forresistance butt welding bent, round steel chains, with notchesat the chain link ends. The welding mark on the chain link iscompletely deburred by the chain welding machine.

S Monitoring of the welding process

S Programming – Input of welding parameters

Quality
For more than 125 years, the name of WAFIOS has been synonymous with highest quality, safety standards, and technicalinnovations in the German machine manufacturing industry.

T Kettenbiegemaschine KEB 7.2 und Kettenschweißmaschine KEH 7.2

Reliability
Strict quality controls, state-of-the-art production systems, andmany years of experience guarantee that your investment is safein our hands. Our global service network ensures high availabilityof WAFIOS machinery.
Cost efficiency
High production output and a long service life will save money
and shorten the amortization time of your investment.
WAFIOS Series KEH x.2 Chain Welding Machines 3

Technical Data

KEH 3.2

KEH 4.2

KEH 5.2

KEH 7.2

Nominal wire Ø:
[mm]
Adm. tolerances in accordancewith DIN EN 818-2
up to 800 N/mm²

up to 900 N/mm²

up to 1000 N/mm²

3.0 –  6.03.0 – 5.0

5.0 – 10.0
5.0 – 9.0

8.0 – 13.0
8.0 – 12.0

10.0 – 18.0
10.0 – 17.0
10.0 – 16.0

8.9 – 42.0
min. 2.7 × d
10.8 – 25.2
(bent)

13.5 – 50.0
min. 2.7 × d
16.0 – 38.0

21.5 – 65.0
min. 2.7 × d
25.0 – 50.0

27.0 – 100.0
min. 2,7 × d
34.0 – 75.0

ca. 90 – 64

abt. 55 – 45
abt. 75 – 50

ca. 40 – 25ca. 55 – 34

ca. 35 – 18
ca. 45 – 1940

100

150

280

Compressed air consumption: [Nl/min](Sl/min at 6 bar)

not yet definedca. 600

ca. 800

ca. 1.035

Cooling water consumption:
(l/min at 3 bar min.)[l/min]not yet defined

35 – 40

35 – 40

35 – 40

Space required:
(l × w × h)[mm]

not yet defined

abt. 4,660 ×2,580 × 3,100

abt. 4,080 ×
3,160 × 2,750

abt. 5,080 ×
3,450 × 2,910

Net weight:
(machine with switch cabinet)[kg]

not yet definedca. 6,400

ca. 7,500

ca. 9,800

Welded chain link:
[mm]
Pitch / inside length of chain link

Output:

Outer chain link width[links/min]
Stainless steel
Chain steel

Welding transformer:
[kVA]
Rated power 50% duty cycle

Our product range includes a wide variety of high-quality
chain machines.
J Chain bending machines, KEB x.1 and KEB x.2 series
J Chain bending machines, KER x.2 and KER 8 series
J KBA 601 chain bending machine with conduction (WED 601)
heating or with induction (IEW 601) heating of chain link blanks
J Chain bending machine KBF 60
with induction heating (IEW 60) of chain link blanks
J Chain (resistance butt) welding machines,
KEH x.2 and KEH 8 series
J Chain (flash butt) welding machines,
KSH and KSF 60 series
J Chain calibrating machines, KPH series

WAFIOS AG
Silberburgstraße 572764 Reutlingen, Germany
Phone +49 7121 146-0
Fax+49 7121 146-250
sales@wafios.de
www.wafios.com
Precision Machinery for Wire and Tube
Pictures may differ from agreed scope of delivery – Subject to technical changes - © WAFIOS AG 2022
4633/4635/4636 en. - C06/22