Truck Crane Boom Anti-Tilt Cylinder | EP-HCYY11112014 Model
Truck Crane Boom Anti-Tilt Cylinder
EP-HCYY11112014 · Φ190mm · Stroke 1,400mm · 590 kg · Safety-Critical
The safety cylinder that prevents catastrophic boom over-tilt. At 590 kg, the anti-tilt cylinder is the second-heaviest cylinder in the truck crane family — mounted between the crane superstructure and the boom base. It limits the boom's backward tilt angle, preventing the boom from folding over the back of the crane during luffing operations. A failure of this cylinder can result in boom collapse.
Technical Specifications
▲ Dimension Drawing
| Parameter | Specification |
|---|---|
| Product Name | Truck Crane Boom Anti-Tilt Cylinder |
| Cylinder Model | EP-HCYY11112014 |
| Bore Diameter (D) | Φ190 mm |
| Rod Diameter (d) | Φ160 mm |
| Stroke (S) | 1,400 mm |
| Installation Distance (L) | 4,300 mm |
| Working Pressure | 20 MPa |
| Maximum Withstand Pressure | 30 MPa |
| Weight | 590 kg |
| Application | Truck-Mounted Crane |
▲ Truck Crane Boom Anti-Tilt Cylinder | EP-HCYY11112014 ModelHow the Anti-Tilt Cylinder Prevents Boom Over-Rotation
During crane luffing (raising the boom angle), the boom can reach a position where gravity reversal occurs — the boom's centre of gravity passes over the pivot point, and the boom would accelerate backward uncontrollably. The anti-tilt cylinder acts as a hydraulic backstop, absorbing the boom's energy and limiting the maximum backward angle.
The extreme rod-to-bore ratio (Φ160/Φ190 = 84.2%) tells the engineering story: this cylinder works primarily in tension — pulling against the boom to resist backward tilt. The thick Φ160 rod provides the tensile strength needed to restrain a boom that can weigh tens of tonnes, while the relatively narrow annular area limits the oil volume for controlled energy absorption.
The 4,300 mm installation distance and 1,400 mm stroke span the full angular range of the boom — from working position to maximum safe backward angle. The cylinder must be long enough to accommodate the full arc of boom rotation without bottoming out. Browse the full mobile machinery hydraulic cylinder range.
Why 590 kg? The Engineering of Heavy-Duty Safety
At 20 MPa, the Φ190 bore produces approximately 567 kN (57 tonnes) of restraining force — enough to arrest a multi-tonne boom that is accelerating backward under its own weight.
The Φ160 rod resists the full boom load in tension. The thick-wall rod prevents buckling and provides the structural integrity needed for this safety-critical function.
The cylinder spans from the superstructure to the boom base — a distance that increases as the boom tilts backward. The 1,400 mm stroke accommodates the full range of safe boom angles.
Key Advantages
- Safety-critical boom protection — prevents catastrophic backward over-tilt that could collapse the boom onto the crane cab or surrounding structures.
- 20 MPa / 30 MPa rating — designed for the dynamic loads of boom luffing, including wind gusts, sudden stops, and load swing.
- 84.2% rod ratio — primarily a tension member. The thick Φ160 rod provides the tensile strength to restrain the full weight of the boom and suspended load.
- ⚡ 1,400 mm stroke — covers the full range of safe boom angles from working position to maximum backward tilt.
- ️ 590 kg heavy-duty construction — the wall thickness and material grade are specified for the extreme forces in large truck crane applications.
Truck Crane Cylinder Family
Spring Cyl. Φ63, 5kg
Anti-Tilt Cyl. Φ190, 590kg
Pin Cyl. Φ80, 18kg
Luffing Cyl. Φ320, 3500kg
Counterweight Cyl. Φ200, 55kg
Why Choose Korea Ever-Power
Korea Ever-Power is a professional hydraulic cylinder manufacturer and supplier, specialising in forklift hydraulic cylinders, aerial work vehicle cylinders, mobile machinery cylinders, offshore cylinders, and industrial engineering cylinders. Our production facilities are equipped with composite machining centres, multi-station welding robots, automated assembly lines, specialised cylinder testing machines, and a dedicated quality inspection area — ensuring every cylinder meets OEM-grade performance standards.
Korea Ever-Power forklift tilt cylinders are manufactured to the same specifications and quality standards as original equipment cylinders fitted to major forklift brands worldwide. Every cylinder is 100% hydrostatic pressure tested, dimensionally inspected, and shipped with a test certificate and seal kit. Contact the Korea Ever-Power team for pricing and lead time.
Frequently Asked Questions
What Our Customers Say
"The anti-tilt cylinder is the most important safety component on our 220-tonne crane. Korea Ever-Power delivered the EP-HCYY11112014 with full pressure test certification. Installation required a 2-tonne crane within the workshop — at 590 kg, this is not a hand-carry part."
V. Kozlov — Heavy Crane Engineer, Russia
"We tested the replacement anti-tilt cylinder at 30 MPa for 15 minutes — zero leakage, zero pressure drop. The chrome on the Φ160 rod is uniform across the full 1,400 mm length. Quality matches OEM."
H. Zhang — QC Inspector, Singapore
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