HCG4004 Enerpac 400 Ton Single-Acting High-Tonnage Cylinder, 3.94 in Stroke, 450 Ton Max Capacity

The Enerpac HCG4004 is a 400-ton class single-acting cylinder from the HCG-Series high-tonnage range, with a 3.94 in stroke and a maximum capacity of 450 tons at 10,150 psi. As a load-return cylinder, the plunger retracts under the weight of the load once pressure is released, so it suits lifting and lowering where the load itself pushes the cylinder back down.

Features

• Hardened surface that resists side-loading and cyclic wear
• Designed to withstand up to 10% side-load of maximum capacity
• Stop-ring to prevent plunger blow-out
• Weather protected, inside and out
• Upper and lower replaceable bearings support the plunger throughout the stroke
• Certified lifting eyes, base mounting holes and collar threads

Sizing

The HCG4004 has an effective area of 88.75 in² and needs 349.39 in³ of oil to advance its full stroke. It is 14.61 in tall collapsed and about 18.55 in extended. Choose a pump with at least 384 in³ of usable oil; a ZE pump with a 1.8 gal (416 in³) reservoir or larger covers a single cylinder. Under full load, a ZE4 pump (60 in³/min at 10,000 psi) takes about 5.8 minutes to complete the stroke and a ZE5 (120 in³/min) about 2.9 minutes; under light load two-stage pumps move it much faster.

How it compares

The HCR4004 is the double-acting version with the same capacity and stroke. Other strokes in the 400-ton HCG range: HCG4002 (1.97 in), HCG4006 (5.91 in), HCG4008 (7.87 in), HCG40010 (9.84 in), HCG40012 (11.81 in).

Before you order: A load-return cylinder needs the load (or an external force) to retract it; keep side-load below 10% of maximum capacity; on 400-ton models the collar thread is optional: order HCG4004E002 for a cylinder with collar thread.

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