GROUND BLOCK RETRACT CYLINDERS
5Pages

ENGINEERED PRODUCTS GROUND BLOCK RETRACT CYLINDERS FOR ALL MIG & ARC WELDING APPLICATIONS IN FIXTURES, TRUNIONS, AND DIAL TABLES. INSULATED GROUND BLOCK CYLINDERS ARE IDEAL FOR SINGLE-POINT WELDING. SOLID STATE CYLINDER SWITCH 70mm BORE PNEUMATIC CYLINDER, SINGLE ROD 1/4" NPT OR G1/4 PORTS NAAMS STANDARD MOUNTING CHROMED CYLINDER ROD IS ELECTRICALLY INSULATED FROM MOUNTING SURFACE CLASS 2 COPPER SHUNT ADAPTER REGULATOR (NPT OPTION ONLY) 50mm BORE PNEUMATIC CYLINDER, SINGLE ROD 1/8" NPT OR G1/8 PORTS CLASS 2 COPPER FLAT/SMOOTH SWIVEL HEAD (TWO SIZES) CLASS 2 COPPER KNURLED SWIVEL HEAD CLASS 2 COPPER PROJECTION SWIVEL HEAD THE GB SERIES GROUND BLOCK CYLINDERS PRODUCE A CONSISTENT PRESSURIZED GROUND, EVEN AFTER SIGNIFICANT ELECTRODE WEAR, BY SHORT-STROKING THE CYLINDER 10mm. INCREASES WELD CONSISTENCY. RETRACTABLE GROUND BLOCKS ALLOW EASY PART REMOVAL OR TRANSFER. FITS STANDARD #2MT SWIVEL FOOT GROUND BLOCKS. BI-DIRECTIONAL BODY MOUNTING; FLOOR OR REMOTELY MOUNTED. LUBRICATION-FREE DESIGN. INEXPENSIVE COMPARED TO MACHINED GROUND BLOCKS. RATED FOR 10,000 AMPS, MAX 30,000 AMPS Welker Engineered Products

ORDERING INFORMATION NOTE: ALL BOXES MUST BE FILLED IN FOR A COMPLETE PART NUMBER Series 2 GB2 3 GB3 Stroke 025 GB2: 025 & 50mm (only) 025 GB3: 025, 032, 050, 075 & 100mm Port Type N NPT Ports G G Ports Port Location 1 "1" Shown (2, 3 or 4) Switch 00 No switch LX See Welker Cylinder Switch Chart Nose 0 A B C D E Option None Copper shunt Copper shunt Copper shunt Copper shunt Copper shunt adapter adapter w/ adapter w/ adapter w/ adapter w/ Flat Swivel head Serrated Swivel head Projection Swivel head Small Flat Swivel head Regulator 0 No Regulator R Regulator: For NPT ports only (GB2 only)...

4X C'BORE FOR M6 OR 1/4" SHCS n3/4" CHROMED CYLINDER ROD 50mm BORE PNEUMATIC CYLINDER ELECTRICALLY INSULATED FROM MOUNTING SURFACE 1/8" NPT OR G1/8 PORTS 16.0 WRENCH FLATS 15.0 WRENCH FLATS OPTIONAL REGULATOR: SEE NOTES BELOW 65 OPTIONAL SOLID STATE CYLINDER SWITCH APPROX. WEIGHT: 6.2 LBS (DO NOT SCALE DRAWING) FOR NPT OPTION ONLY MINIMUM OUTPUT FORCE IS 45lbf @ 16 PSI ENGINEERED PRODUCTS SHEET 3

GB3 DIMENSIONS 4X n8.5 DRILL THRU FOR THRU BOLT MOUNTING 24.0 WRENCH FLATS 25.4 WRENCH FLATS ELECTRICALLY INSULATED FROM MOUNTING SURFACE 70mm BORE SINGLE ROD AIR CYLINDER SOLID STATE CYLINDER SWITCH OPTION (SEE WELKER SWITCH CHART) 115 + STROKE MOUNTING SURFACE UNIT WEIGHTS** UNIT STROKE WEIGHT 25mm 11.5 LBS 32mm 11.5 LBS 50mm 12.5 LBS 75mm 13.0 LBS 100mm 13.5 LBS **WEIGHTS SHOWN ARE APPROXIMATE AND WILL VARY WITH OPTION SELECTION. SHEET 4 ENGINEERED PRODUCTS 248-528-2020 www.welkerproducts.com

FLAT SWIVEL HEAD SERRATED SWIVEL HEAD Option None Copper shunt Copper shunt Copper shunt Copper shunt Copper shunt adapter adapter w/ adapter w/ adapter w/ adapter w/ PROJECTION SWIVEL HEAD Flat Swivel head Serrated Swivel head Projection Swivel head Small Flat Swivel head SMALL FLAT SWIVEL HEAD *SWIVEL HEADS ARE CLASS 2 COPPER RATED FOR 10,000 AMPS MAXIMUM 30,000 AMPS M10x1.5 TAP THRU FOR SHUNT MOUNTING LOCK WASHER 35.0 FLAT FOR SHUNT MOUNTING 94 M10x1.5 TAP THRU FOR SHUNT MOUNTING LOCK WASHER DIA.: NOSE OPTION DIAMETER (mm) B 38.1 ENGINEERED PRODUCTS SHEET 5