contact semi-automatic welding of hinge bodies with the stabiliser bar provides a threefold margin of safety of welds; ball pin is made of heat-treated high quality alloy steel; sphere and flange of the pin are additionally strengthened by rolling rollers;the thread of the ball pin is made by knurling method, which achieves high accuracy and strength of the thread; lubricant for ball joints SHRB-4 is put under the cover, which additionally protects the joint from moisture penetration); covers are made of oil, petrol, ozone and ozone resistant thermoplastic polyurethane: durability 3 times higher than rubber and silicone analogues, anti-corrosion coating of the case;anti-corrosion coating of the ball pin.
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