The TECNA 9355 is a zero-gravity tool balancer for loads weighing 15.4-22 lb. At this capacity the load is usually a powered hand tool - an air screwdriver, a drill or a small riveter - and it works equally with anything else in that weight range.

Zero-gravity means the load stays wherever you leave it instead of returning to a rest position - let go at mid-height and the tool simply hangs there, weightless to the operator. Cable travel is 6.6 ft (2,000 mm) and capacity is adjustable across 15.4-22 lb (7-10 kg), set with a worm screw. The load is carried by a spring drum inside, which is why balancers like this are also called spring balancers.

It has a manual lock to hold the load at any height: push the pin and turn it 90 degrees to stop the drum, and turn it back for normal working. Only operate the lock with the load hanging.

If the drum spring ever breaks, a safety device blocks the balancer so the load cannot fall. If it trips, do not try to free it - have the balancer serviced.

Size it on the total hanging weight - the tool, its accessories and the length of hose or cable the balancer lifts - which has to sit inside the capacity range. Electric, pneumatic and hydraulic tools all suspend the same way.

Specifications:

• Capacity: 15.4-22 lb (7-10 kg), adjustable by worm screw
• Cable travel: 6.6 ft (2,000 mm)
• Unit weight: 11.68 lb (5.30 kg)
• Ambient temperature: 41 to 140 F (5 to 60 C)
• Stainless steel cable
• Ribbed and sealed aluminium alloy body
• Safety suspension
• Manual lock to hold the load at any height
• Safety device against load dropping due to spring breakage
• Adjustable stroke limiting device
• Taper drum rotating on ball bearings
• Cable guide in antifriction material
• Rotary upper hook with ball bearing
• Inert spring drum assembly

Extension cables are available if the balancer has to hang higher than the load needs to reach: 1.6 ft (500 mm, 72967/0,5), 3.3 ft (1,000 mm, 72967/1), 8.2 ft (2,500 mm, 72967/2,5), 9.8 ft (3,000 mm, 72967/3) and 16.4 ft (5,000 mm, 72967/5), stainless steel 3 mm cable with a 80 mm carabiner.

Options for this model: Option F is the friction brake on the drum, fitted at the factory when the balancer is built - that is the TECNA 9355.F. TECNA also builds this model as the 9355G, with a rubber-covered aluminium body, to order. Option 32952 is the flexible cable holder, for loads up to 55 lb (25 kg).

The structure you hang it from has to be stronger than five times the balancer weight plus the maximum load - and if several balancers share one structure, five times the total of all of them, each on its own independent connection point. Always connect the safety suspension to a separate support, and set the stroke limiter so the load never comes to rest above the operator.

Made in Italy, to DIN 15112. Breaking load is guaranteed at a minimum of five times the declared maximum load on every sensitive part. Every production lot is sample-tested too: a static test at 1.25 times the maximum rated load held for ten minutes at full stroke, and a dynamic test at 1.1 times maximum load run for an hour.

The same balancer is also built as the 9355RL for food processing and washdown areas, the 9355ES for ESD-protected areas and the 9355AX, ATEX-certified for explosive atmospheres.

Other capacities in the 9354-9359 series: 9354 (8.8-15.4 lb), 9356 (22-31 lb), 9357 (31-40 lb), 9358 (40-48.5 lb), 9359 (48.5-55 lb).

Browse all zero-gravity balancers. If you need the tool to return to a rest position when you let go instead of staying put, that is a tool retractor, not a zero-gravity balancer.

Supported in the USA by Tool Balancers USA.