Product Introdution

TYD-K Series Single-Acting Hollow Plunger Hydraulic Jacks adopt through hollow plunger design with single-acting structure and spring return system. It can not only perform lifting work, but also cooperate with tie rods for tensioning, bolt tightening, pin shaft disassembly and other pulling & pushing operations. The cylinder barrel is made of high-strength alloy steel, precision processed by imported CNC machines after premium heat treatment, with anti-corrosion surface finish. Equipped with imported sealing kits for leak-free continuous operation. All models come with standard NPT 3/8” male high-pressure connectors and dust caps. The heat-treated plunger head requires no saddle seat. Widely used in prestressed tensioning, bearing removal, construction machinery pin & bushing disassembly, bridge anchor cable tensioning, bolt preloading, compatible with all manual and electric hydraulic pump stations.

Feature

• Unique through hollow plunger structure, single acting design; the plunger retracts automatically via spring force after pressure relief, capable of penetrating rods to finish tensioning, pulling and lifting tasks.

• Anti-corrosion coating on cylinder surface with glossy texture, resisting rust and oxidation during long-term indoor & outdoor use.

• Constructed from high-strength alloy steel with professional heat treatment, precisely machined by imported CNC lathes, drilling and grinding machines for excellent rigidity and stable pressure resistance.

• Imported sealing assemblies minimize friction loss, supporting long continuous operation without abrasion and hydraulic oil leakage.

• Every model is fitted with NPT 3/8” male high-pressure connector and matched dust cap to protect thread fittings from dirt and collision damage.

• The plunger head is strengthened by heat treatment with high hardness and anti-slip performance, no saddle seat needed for lifting operations.

Technical Parameter