KN-200A Pneumatic Weld Head
Opposed Electrodes
(Formerly known as KN-II)

The KN-200A weld head has been extensively proven in industrial environments around the world and is regarded as the “dependable workhorse� of the industry. The KN-200A and its proprietary fast force follow-up feature eliminates weld expulsion, preventing entrapment of ejected materials in projection welded electronic devices – a common cause of PIND (particle impact noise detection) failure.

Single cylinder design delivers 250 – 1250 lb (113 – 568 kg) of weld force.
Dual cylinder design delivers 250 – 4082 lb (113 – 1855 kg) of weld force.

Designed to accommodate a variety of metal projection welding applications including sensors, frequency devices, filaments, heating elements, photonics packages, strain gauges and transducers.

Key features:

• Robust, low maintenance die set design
• Fast force follow-up feature maintains force during weld eliminating weld expulsion
• Rigid construction using a 25 micron matched linear ball bearing bushing and tie rod for precise positioning and planarity
• Simple actuation using Benchmark’s SS-1 pneumatic weld head controller
• Can be configured to be used with any manual or automatic welding system

SS-100A PNEUMATIC CONTROLLER

TECHNICAL SPECIFICATIONS KN-200A WELD HEAD

Model	KN-200A-Single	KN-200A
Actuation Type	Pneumatic	Pneumatic
Electrode Configuration	Opposed	Opposed
Electrode Alignment	Inline	Inline
Electrode Type	2" Dia	2" Dia
Force range	250 - 1.250 lb	250 - 4,082 lb
	1.112 - 5.669,90 N	1,112 - 18,157 N
	113,398 - 566,990 kg	113.398 - 1,851.563 kg
Stroke	1.98 in (50.3 mm)	1.98 in (50.3 mm)
Automation Ready	Yes	Yes
Size (H x D x W)	11.9 in x 23.4 in x 14.9 in (301.5 mm x 594.9 mm x 377.9 mm)	11.9 in x 23.4 in x 14.9 in (301.5 mm x 594.9 mm x 377.9 mm)
Weight	95 lb (43.2 kg)	100 lb (45.5 kg)

TECHNICAL SPECIFICATIONS SS-100A WELD HEAD CONTROLLER

Part Number	KN-200A-SINGLE	KN-200A
Weld Force Range	250 - 1250 lb-F (113 - 568 kg-F)	250 - 4082 lb-F (113 - 1855 kg-F)
Throat Opening with electrode	1.32 in (33.5 mm)	1.32 in (33.5 mm)
Throat Depth	7.0 in (177.8 mm)	7.0 in (177.8 mm)
Cylinder Stroke	1.98 in (50.3 mm)	1.98 in (50.3 mm)
Weld force control	SS-100A/SINGLE	SS-100A
Electrode Holder	1 in (25.4 mm) diameter	2 in (50.8 mm) diameter
Electrodes	RWMA 3 and RWMA11	RWMA 3 and RWMA11
Dimensions (L x W x H)	14.9 in x 11.9 in x 19.8 in (377.9 mm x 301.5 mm x 502.7 mm)	14.9 in x 11.9 in x 19.8 in (377.9 mm x 301.5 mm x 502.7 mm)
Weight	95 lb (43.2 kg)	100 lb (45.5 kg)