Beschreibung
Primary Keyword: Hook Lift Swing Arm Hydraulic Cylinder
Related Keywords: roll-off hoist swing arm cylinder, refuse compactor arm cylinder, hook lift long-stroke cylinder, heavy-duty hook lift spare parts, environmental protection truck hydraulic cylinder
Long-tail Keywords: large bore hydraulic cylinder for hook lift swing arm, OEM swing arm cylinder for roll-off truck, high-force hook lift cylinder 1925mm stroke, replacement swing arm cylinder for refuse compactor, long-stroke hydraulic cylinder for waste collection vehicle
HCYY11112014 — Hook Lift Swing Arm Hydraulic Cylinder
Environmental Protection Series · Double-Acting · Bore Φ160 × Rod Φ80 × Stroke 1925 mm
The hook lift swing arm hydraulic cylinder HCYY11112014 is the primary power actuator in a hook lift system — the cylinder that drives the swing arm through its full arc from rest position to loading height and back. With a Φ160 mm bore, 1925 mm stroke, and 30 MPa working pressure, it generates 603.2 kN of extension force: the highest output in the Environmental Protection Series. This is the cylinder doing the heaviest mechanical work in the entire hook lift assembly — raising and lowering loaded skip containers that may weigh 10 tonnes or more through arcs exceeding three metres of travel.
At 290 kg, it is also the heaviest cylinder in the series — a reflection of the structural material required to contain 30 MPa across a Φ160 mm bore over a 1925 mm stroke without barrel deflection or piston rod instability. The 50% rod-to-bore ratio (Φ80 mm rod) provides substantial retract force of approximately 452 kN while maintaining Euler column stability across the extended rod length. Adjustable cushioning is fitted at both ends to control arm deceleration at the limits of travel — protecting both the cylinder and the swing arm structure from end-of-stroke impact loads.
Like all cylinders in the Environmental Protection Series, the HCYY11112014 is available with HNBR seals for biodegradable hydraulic fluid compatibility, and optional HNBR is specified without modification to the cylinder body dimensions. For OEM hook lift manufacturers and refuse compactor builders sourcing the primary arm actuator for production integration, this cylinder is available with custom mounting geometry, port configuration, and cushioning adjustment range.
Product Overview
In a hook lift system, the swing arm cylinder is mounted between the vehicle chassis and the hook arm — its extend stroke drives the arm upward and rearward to engage a container, and its retract stroke pulls the loaded container forward and down onto the vehicle bed. The geometry of this motion means the cylinder operates under significant combined load: axial compression during the initial lift, and a bending moment component as the arm moves through its arc and the container’s centre of gravity shifts relative to the cylinder’s mounting axis. The HCYY11112014 is designed to handle this combined loading reliably across many thousands of operating cycles.
The 1925 mm stroke — the longest in the Environmental Protection Series — reflects the arc length required by hook lift systems on larger vehicles, where the hook must travel far enough to reach a container at ground level from a mounting position several metres above it. This stroke length also makes the cylinder’s installed length management important: at full extension the piston rod protrudes nearly two metres beyond the barrel, making rod straightness, surface finish, and guide bearing length critical parameters for preventing rod seal scoring caused by lateral load during extension. These considerations are addressed in the cylinder’s guide bearing design and rod specification.
The 603.2 kN extend force is generated at 30 MPa across the full Φ160 mm bore area. For context, this is sufficient to lift approximately 61 tonnes against gravity — far in excess of the container loads encountered in practice, but the margin accounts for the mechanical disadvantage of the arm geometry at certain positions in the arc, and for the inertial component of accelerating a heavy container from rest. Real operating forces seen by the cylinder depend on the arm geometry and the system’s hydraulic flow rate; the rated force provides the envelope within which the arm designer works.
For roll-off hoist manufacturers, the HCYY11112014 platform covers the swing arm actuator requirement across a range of vehicle GVW classes. Bore and stroke can be scaled to match specific arm geometry and container weight class requirements. Customers with existing swing arm designs can supply the pivot-to-pivot dimension at full extension and at rest, and we will confirm whether the standard installation distance (2376 mm) is appropriate or whether a modified stroke is required.
Technical Specifications
| Parameter | Specification |
|---|---|
| Cylinder Model | HCYY11112014 |
| Type | Double-Acting |
| Bore Diameter | Φ160 mm |
| Rod Diameter | Φ80 mm |
| Stroke | 1925 mm |
| Installation Distance | 2376 mm |
| Working Pressure | 30 MPa |
| Maximum Pressure | 35 MPa |
| Extend Force (at 30 MPa) | 603.2 kN |
| Rod Ratio | 50% |
| End Cushioning | Adjustable, both ends |
| Weight | 290 kg |
| Series | Environmental Protection Series |
| Optional Seal | HNBR (biodegradable fluid compatible) |
Installation Position on Hook Lift Garbage Truck
The diagram above illustrates where each cylinder sits within the complete hook lift system. The swing arm cylinder (HCYY11112014) is the large-bore, long-stroke actuator running diagonally between the vehicle chassis sub-frame and the upper section of the hook arm — the dominant structural cylinder visible in the system layout. It is the primary force element: everything the hook arm does in terms of arc travel and container weight handling passes through this cylinder.
The cylinder mounts via pin eyes at both ends — one pin fixed to the chassis sub-frame, the other to the hook arm pivot bracket. As the arm swings from its stowed position down to ground level and back, the cylinder extends and retracts through its full 1925 mm stroke, rotating around both mounting pins. This rotation is why pin-eye mounting with adequate bush clearance is essential: the cylinder must be free to articulate in the swing plane without binding at the end fittings.
Engineering Design Details
Bore Diameter and Extend Force: The Φ160 mm bore is the largest in the Environmental Protection Series. At 30 MPa working pressure, the piston face area of approximately 201 cm² generates 603.2 kN of extension force. Bore diameter directly determines lifting capacity; increasing bore by 10% increases force by approximately 21%, so the Φ160 mm dimension represents a deliberate sizing decision for the 10–20 tonne container class the system is designed for. Bore honing tolerance and surface finish are held to ensure piston seal longevity across the long stroke.
Rod Diameter and Column Stability: At Φ80 mm across a 1925 mm stroke, the piston rod operates at a slenderness ratio that requires careful attention to Euler column stability under compressive loading. The rod diameter is sized so that the column safety factor against buckling is maintained at the maximum extension condition with the full 603.2 kN applied. Rod material and straightness tolerance are selected to support this. The hard-chrome surface finish on the rod protects the rod seal and minimises friction across the long stroke, where variations in surface quality would cause progressive seal wear.
Stroke and Arc Coverage: The 1925 mm stroke — the longest in the series — allows the hook arm to reach from a stowed position at vehicle height to a container sitting on the ground several metres behind the vehicle. The actual arc covered depends on the arm pivot geometry; the cylinder stroke must match the pivot-to-pivot distance change between the arm’s rest and full-extension positions. This is a parameter that must be verified against the specific arm design rather than assumed from catalogue data.
Adjustable End Cushioning: Cushioning at both ends allows the arm’s deceleration rate to be tuned at commissioning for the specific container weight class and operating cycle speed of each application. Insufficient cushioning causes end-of-stroke impact that fatigues both the cylinder mounting and the arm structure. Excessive cushioning slows cycle time. Adjustable cushioning allows operators to find the correct balance for their specific operating conditions without replacing components.
Cylinder Tube and Surface Treatment: At Φ160 mm bore and 2376 mm installation length, the cylinder barrel is a substantial structural element as well as a pressure vessel. Wall thickness is calculated for the 35 MPa burst condition. External surface treatment provides corrosion protection for vehicle chassis mounting, where moisture and road contamination exposure is continuous.
Hydraulic Seals and HNBR Option: Standard seals are selected for petroleum-based fluid in the temperature range of vehicle hydraulic systems. The HNBR option substitutes all elastomers with hydrogenated nitrile rubber for biodegradable fluid compatibility — required for environmental compliance in certain European markets. The seal change does not affect the cylinder’s external dimensions or mounting interface.
Why Choose This Swing Arm Cylinder
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603.2 kN extend force — series maximum: The highest output cylinder in the Environmental Protection Series, sized for hook lift arms handling the largest container classes. Force margin over minimum requirement translates directly into longer cylinder service life under the fatigue loading of high-cycle fleet operation. - →
1925 mm stroke — longest in series: Covers the arc geometry of hook lift systems on large vehicle platforms, where ground-to-vehicle-height travel exceeds what shorter-stroke cylinders can accommodate without additional linkage complexity. - →
Adjustable cushioning at both ends: Allows deceleration tuning for different container weights and cycle speeds at commissioning, without component replacement. This is a practical advantage in fleets operating mixed container weights across different routes. - →
Column-stable rod design across full stroke: The Φ80 mm rod diameter is sized for Euler stability at the full 1925 mm extension with rated compressive load applied — a calculation that determines minimum rod diameter for long-stroke cylinders and is non-negotiable for reliable service life. - →
HNBR seal option for biodegradable fluid compliance: Environmental regulations on waste collection vehicles are tightening across multiple markets. The HNBR package allows fleet operators to adopt biodegradable hydraulic fluid without modifying or replacing the cylinder body. - →
OEM-configurable mounting and porting: Mounting interface, port thread standard, and cushioning adjustment range are configurable to match the specific hook lift arm design — supporting both new OEM production and direct-fit replacement for existing vehicles.
Application Scenarios for the High-Force Hook Lift Cylinder
- Hook lift truck swing arm actuation — primary lifting cylinder for container loading and unloading
- Roll-off hoist systems on 16–30 tonne GVW heavy trucks
- Refuse compactor arm actuation — driving the compaction arm through its working cycle
- Waste collection vehicles operating under biodegradable hydraulic fluid regulations
- Skip loaders with long-reach arm geometry requiring extended stroke
- Recycling collection vehicles handling large-volume containers in the 8–15 tonne net weight class
- Heavy-duty transportation equipment requiring high-force linear actuation over long travel
- OEM hook lift arm replacement for high-cycle fleet operations
OEM and Custom Manufacturing Service
Hook lift arm geometry varies significantly between vehicle manufacturers and vehicle GVW classes — the cylinder pivot positions, arm arc, and container weight class all influence the required stroke, bore, and mounting configuration. The HCYY11112014 is offered as a platform with configurable dimensions rather than a fixed catalogue specification.
For OEM production integration, customers supply pivot-to-pivot dimensions at rest and full extension, maximum container weight, hydraulic system pressure, and required cycle time. We will confirm bore diameter, stroke, rod diameter for column stability, and mounting configuration from these inputs. Drawing review and prototype production are available before batch order commitment.
For aftermarket replacement, the cylinder can be configured to match the installation distance, port thread, and mounting pin geometry of the original unit. Provide the original cylinder drawing, stamped part number, or measured dimensions of the unit being replaced. Batch pricing is available for fleet operators replacing worn cylinders across multiple vehicles simultaneously.
Häufig gestellte Fragen
How do I determine the correct stroke length for my hook lift arm?
Measure the distance between the cylinder’s chassis pivot pin center and the arm pivot pin center at full retraction (arm stowed), and again at full extension (arm at maximum reach). The difference between these two measurements is the required stroke. For new designs, these dimensions come from the arm geometry drawing at the two extreme positions.
Can you adjust the cushioning for different container weights?
Yes. The adjustable cushioning at both ends can be tuned at commissioning using the external adjustment screws. This allows deceleration to be set for a specific container weight class without disassembling the cylinder. If a fleet operates a very wide range of container weights, it may be practical to establish separate cushioning settings for light and heavy loads.
What is the maximum working pressure and is it safe for high-pressure vehicle hydraulic circuits?
The working pressure is 30 MPa and the maximum (design) pressure is 35 MPa. This is compatible with high-pressure open and closed-centre vehicle hydraulic circuits. The 35 MPa maximum provides headroom against pressure spikes from thermal expansion or valve switching. If your system regularly generates spikes above 35 MPa, consult us before ordering.
Can this cylinder be manufactured to our OEM arm design drawings?
Yes. Submit your assembly drawing with pivot positions, container weight class, and hydraulic system pressure. We will confirm bore, stroke, rod diameter (column check), mounting interface, and port configuration. Prototype production is available for fitment and function testing before batch orders are placed.
What is the production lead time for batch orders?
Lead time for standard-configuration batch orders is confirmed at quotation stage based on order volume and current production schedule. For custom-configuration orders requiring drawing approval and tooling preparation, lead time includes drawing review and prototype stages. Provide your required delivery schedule at enquiry stage so it can be factored into the quotation.
Is the HNBR seal option a dimensional change from the standard seal package?
No. HNBR is a material substitution only — the seal geometry, groove dimensions, and cylinder body are unchanged. Cylinders ordered with the HNBR option are dimensionally interchangeable with standard-seal units. Specify HNBR at order stage; it cannot be retrofitted to an installed cylinder without disassembly.
Can samples be provided for fleet evaluation before a full order?
Yes. Sample units in standard or custom configuration are available. Provide installation dimensions and operating parameters so the sample can be configured correctly for your arm design. We recommend functional testing on a single vehicle before batch order commitment for a new application.
What mounting configurations are available?
Standard mounting is a clevis or pin-eye at both ends, which is the most common configuration for swing arm cylinders that rotate through an arc during operation. Trunnion and flange mounting are available as custom options. Specify your arm design’s mounting interface — pin diameter, eye width, and boss geometry — at order stage.
Request a Quote for the HCYY11112014 Swing Arm Cylinder
Contact us for OEM swing arm cylinder drawings, fleet pricing, and customized solutions for hook lift and refuse compactor systems. Provide your pivot-to-pivot dimensions, container weight class, and system pressure for a direct technical response.
Engineering enquiries welcome — send drawings or dimensional data to receive a formal quotation within 24 hours.
