TECNA 3321 Portable Spot Weld Gun

WSI-SELECT – In-Stock and For Sale at Weld Systems Integrators

TECNA 3321 Portable Spot Weld Gun – WSI Serial #: B0220080

TECNA 3321 portable spot weld gun [ WSI stock / serial #: B0220080 ] IN-STOCK and FOR SALE at Weld Systems Integrators. The TECNA 3321 is a 16 kVA, scissor-type, air-operated, medium-duty spot-welding gun with standard 7.48″ (190 mm) – 25.59″ (800 mm) arms. NOTE: custom arm holder configurations available.

WSI maintains an IN-STOCK inventory of new and used resistance welding equipment at our Warrensville Heights, Ohio location for quick shipment and delivery. Contact our knowledgeable sales team at 844-WSI-WELD or +1-216-475-5629 for immediate assistance.


TECNA 3321 Catalog [ PDF Download ]

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If you have any questions on WSI Select – IN-STOCK equipment available from Weld Systems Integrators, please call 844-WSI-WELD or +1-216-475-5629 and ask to speak with a WSI Engineer.

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    • Pneumatically-operated suspended gun with integrated TE300, TE470 or TE480 microprocessor-based welding controls.
    • Intelligent Design, Small Dimensions, and High Welding Capacity deliver Maximum Productivity.
    • High electrical efficiency.
    • The totally-enclosed unit includes rubber bumpers in some areas, for safe and easy operation.
    • Accurate maneuverability at any angle is guaranteed by gyro suspension mounted on sealed bearings, coupled with a TECNA balancer.
    • Rotation lock allows the locking of multiple axes of motion.
    • Accepts a broad range of standard and special arms to accommodate special applications. “C” type gun assists in accessing unconventional areas.
    • Chromium copper electrode holders offer long life in a production environment and are designed for use at angles of up to 30°. Ask about WSI-exclusive 30-degree arms!
    • Long, adjustable Welding Stroke enables welding in difficult-to-reach areas, including welding reinforcements and ribs.
    • Temporary extra stroke (retraction stroke) allows for reaching into tough spots.
    • Water-cooled transformer, with epoxy resin-coated windings for long life.
    • Water-cooled arms, electrode holders, and electrodes for best performance and maximum use.
    • SCR (Silicon-Controlled Rectifier) is insulated from the cooling circuit and includes a thermal cutoff switch for overheat protection.
    • Lube-free chromium-plated cylinder and shaft offer a long service life in a production environment.
    • Lube-free pneumatic circuit eliminates oil mist in your shop.
    • Trigger Handle Safety prevents accidental initiation.
    • Trigger Handle Controls enable selection between 2 or 4 welding programs, as well as Stage 1 ‘weld / no-weld’ function.
    • New for 2017: Power Supply Cable is replaceable without opening up the welder!
    WSI Serial NumberB0220080
    Gun TypeScissor (L)
    Power @ 50% Duty CyclekVA16
    Max PowerkVA37
    Short Circuit CurrentA16,000
    Thermal Current @ 100%kA4
    Secondary VoltageV2.8
    * Supply Voltage (@60Hz)V440
    Primary Cables Ø (up to 30m)mm210
    Delayed Fuses @ 440VACA32
    Arm Spacingin (mm)6.5 (165)
    Arm Minimum Lengthin (mm)7.5 (190)
    Max Electrode Force @ 116 psi (8 bar)lbs. (daN)629 (286)
    Working Strokein (mm)0.2-1.0 (6-25)
    Maximum Strokein (mm)1.2-1.9 (30-48)
    Arm Maximum Lengthin (mm)25.6 (650)
    Max Electrode Force @ 116 psi (8 bar)lbs. (daN)209 (95)
    Working Strokein (mm)0.7-2.8 (18-72)
    Maximum Strokein (mm)3.5-5.5 (90-140)
    Compressed Air Supplypsi (bar)94 (6.5)
    Air per 1000 Spots @ 72.5 psi (500kP / 5 bar)SCF (Nm3)141 (4)
    Hose Inside Øin (mm)0.4 (10)
    Water Cooling @ 36 psi (250 kP / 2.5 bar)gpm (lpm)1.85 (7)
    Max Thickness Mild Sheet Steel
    w/90° Arms @ Min. Lengthin (mm)0.12 x 0.12 (3 x 3)
    w/90° Arms @ 20″ (508mm)in (mm)0.07 x 0.07 (1.8 x 1.8)
    w/90° Arms @ Max. Lengthin (mm)0.05 x 0.05 (1.2 x 1.2)
    w/90° Arms, Cross Wire Max Øin (mm)0.39 x 0.39 (10 x 10)
    Welding Rate per Minute
    0.040 x 0.040″ (1x1mm) Class A66
    0.060 x 0.060″ (1.5 x 1.5mm) Class A
    0.080 x 0.080″ (2x2mm) Class A14
    0.098 x 0.098″ (2.5 x 2.5mm) Class A
    0.118 x 0.118″ (3x3mm) Class B
    Net Weight (w/cables, hoses, suspension & shortest arms)lbs (kg)101 (46)
    Packing Box Dimensionsin (mm)12 x 33.5 x 21.7 (300 x 850 x 550)
    Spring Balancer
    Short Arms Capacity Requiredlbs (kg)99-121 (45-55)
    Short Arms Balancer RequiredModel #9367BR
    Long Arms Capacity Requiredlbs (kg)121-143 (55-65)
    Long Arms Balancer RequiredModel #9368BR