Spot welder arms for GYSPOT PTI: C, G and X arms, which one fits what

The arm is what lets a spot welder reach the joint. Same machine, same current, but a short straight arm welds a door skin and a 1,000 mm arm reaches a roof rail. GYS arms all clamp at 550 daN and are liquid-cooled, so the choice is about three things: which clamp family your machine uses, how deep the arm has to reach, and how much opening you need around the flange. This guide sorts the C, G and X arms on this store by those three things.

Three families, one rule: the arm must match the clamp

Each product page lists the machines the arm fits. If your machine is not on the list, do not force it: a wrong arm does not seat on the clamp taper and the coolant ports do not line up. The GYRO 360° PTI C arm ($378) rotates the gun around a C arm for awkward angles.

G arms by reach

	Arm	What it reaches	Price
	G1	Short straight arm: door skins, flat flanges, sills	$1,020
	G2	Short offset arm for stepped flanges	$838
	G3	Medium reach around pillars	$1,200
	G6	Medium reach, wider opening	$1,110
	G7	Medium reach around wheel arches	$1,215
	G4	Deep C-shaped arm for roof rails and inner panels	$1,907
	G5	Extra reach for rear quarters	$2,950
	G8	Extra reach and opening for floors	$3,160
	G10	Long reach, large opening	$2,790
	G9 + 2 X1	Carrier arm with two short X1 arms for tight joints	$2,700
	G11 PTI-PRO clamp, X-arm adapter	Takes the X family on PTI-G machines	$1,733
	G14	Compact arm for the PTI NEO and GENIUS PLUS	$1,200
	G12, 1000 mm extra deep	The deepest reach in the range	$5,250

C arms for BP.LCX and PTI S7

The C family covers the same reach steps for the older clamp. Stock on these is lower than on G arms because the machines are older; where a C arm shows as sold out, the page takes a reservation and we bring it from GYS France.

	Arm	Reach	Price
	C1	Short straight	$1,037
	C2	Short offset	$956
	C3	Medium	$1,079
	C4	Medium, wide opening	$1,621
	C6	Medium	$741
	C8	Deep	$1,256
	C9	Deep, large opening	$2,640
	C10 difficult access	Joints the standard shapes cannot see	$1,131
	C11	Compact	$1,352
	C12	Compact	$691
	C14	Deep, long reach	$2,590

Looking after an arm

Arms fail at the electrode, not the arm. Keep the right caps and electrodes for each arm, change the coolant hose at the first leak, and use the C arm locking pin ($26) rather than improvising. A seized cap should come off with the cap remover, never a hammer.

All arms are in the arms collection, each with its fit list, and ship from California with the 2-year GYS warranty. For an arm matched to a specific OEM joint, call (415) 419-5824.