Description
HCYY11112006 Aerial Work Platform Lift Hydraulic Cylinder
The HCYY11112006 is an industrial aerial work platform lift hydraulic cylinder engineered for reliable and consistent platform elevation in boom lift, scissor lift, and mobile elevating work platform (MEWP) equipment. This cylinder serves as the primary elevation actuator, generating the hydraulic force that raises the work platform to the required height and supports the combined weight of the platform structure, operator, tools, and working load throughout the entire lift cycle.
The HCYY11112006 is specifically designed for aerial equipment applications where lift cylinders operate under sustained static loads for extended periods while the operator performs work at height. This holding requirement demands a sealing system with minimum internal leakage and compatibility with load-holding valves in the hydraulic circuit. The cylinder specification balances bore size for force output with rod diameter for column stability under the longest part of the stroke.
Aerial platform manufacturers and distributors sourcing lift cylinders for new machine production or maintenance spare parts will find the HCYY11112006 offers a well-documented technical specification, verified pressure test data, and full OEM manufacturing support including custom dimension capability for platform-specific requirements.
Hydraulic cylinder installation positions on aerial work platforms, including lifting cylinder, boom luffing cylinder, telescopic cylinder, leveling cylinder and steering cylinder.
Installation Position and Function
The HCYY11112006 lift hydraulic cylinder is installed in a near-vertical orientation within the platform elevation mechanism. On scissor lift designs, it mounts between the chassis base and the first scissor arm set, pushing the scissors upward as it extends. On boom platforms with a mast or tower structure, the lift cylinder is positioned inside the mast column, extending to raise the platform carriage upward along the mast guide rails.
The cylinder is anchored at the cap end to a fixed structural point on the chassis or mast base, while the rod end connects to the moving platform structure. Hydraulic oil is supplied to the piston-side port to extend the rod and raise the platform. A proportional or on-off control valve regulates the oil flow to control lift speed. When lowering, a metered return flow through the lowering valve controls descent speed to ensure safe, gradual platform lowering even if the operator releases the control input suddenly.
Because the HCYY11112006 is the primary structural load path for the elevated platform, the cylinder body, end cap welds, and mounting pin interfaces are designed and tested to carry not just the rated platform capacity but also the overload conditions that may occur during machine tipping scenarios, where regulations require the machine to remain structurally intact at a specified overload factor.
Key Features
- High load capacity for platform weight and full working payload at maximum extension
- Designed for sustained static load holding at working height
- Precision-honed bore for minimal internal leakage and consistent seal performance
- Rod diameter calculated for column stability across full stroke extension
- Hard chrome rod surface for outdoor corrosion and abrasion resistance
- Compatible with counterbalance and load-holding valve configurations
- Mounting interfaces designed for standard aerial platform structural pin arrangements
- OEM customization: bore, stroke, pressure rating, port configuration
Technical Specifications
| Parameter | Value |
|---|---|
| Model | HCYY11112006 |
| Cylinder Bore | 90 mm |
| Rod Diameter | 63 mm |
| Stroke | 960 mm |
| Working Pressure | 18 MPa |
| Maximum Pressure | 25 MPa |
| Installation Distance | 1250 mm |
| Weight | 31 kg |
Engineering Design Advantages
Hydraulic Performance
The 90 mm bore provides a generous piston area that generates substantial lift force at the rated 18 MPa working pressure. This force output is sufficient to lift a fully loaded aerial work platform — including maximum rated platform capacity, operator, and equipment — from the lowest to the highest position in the lift range without requiring excessive system pressure that would stress hydraulic pumps and valves. The bore size also provides good oil volume per stroke for smooth, jerk-free platform acceleration during lift initiation.
Structural Strength
The 63 mm rod provides adequate cross-sectional area for compressive column load resistance across the 960 mm stroke. This rod-to-stroke ratio is within established engineering guidelines for hydraulic cylinder buckling resistance, ensuring the rod remains straight under the combined static and dynamic loads of the elevated platform. The rod is manufactured from high-tensile steel with no welds in the load-bearing section, providing consistent material properties along the entire rod length.
Sealing Reliability
Platform lift cylinders hold the operator at height for extended periods, sometimes hours, between lift and lower operations. The piston seal system is designed for minimum internal leakage to prevent platform drift — even small amounts of piston bypass leakage accumulate over time and can result in measurable platform descent. The rod seal assembly uses a combination of pressure-activated lip seals and wiper seals to prevent both external leakage and contamination ingress during the long static holding periods typical of platform work at height.
Surface Treatment
The cylinder rod surface finish and hard chrome plating are specified to withstand the continuous seal contact over a 960 mm stroke, which represents a demanding travel distance for chrome durability. The bore internal surface is honed to Ra 0.4 or better, which is the standard required for the composite piston seals used in this application. All external surfaces receive corrosion-resistant coating appropriate for the outdoor operating environment of aerial work platforms.
Durability
The 31 kg weight of the HCYY11112006 reflects the material required to achieve the pressure vessel strength needed at 18 MPa working pressure across the 90 mm bore and 960 mm cylinder length. Cylinder tube wall thickness is calculated per relevant hydraulic cylinder design standards to provide an adequate safety factor at maximum working pressure. Each cylinder is tested at 1.5 times maximum pressure in a static hydrostatic test before delivery to verify structural integrity and seal performance under overload conditions.
Applications
The HCYY11112006 aerial work platform lift hydraulic cylinder is suitable for the following equipment types:
- Scissor Lift: Primary lift actuator for electric and diesel scissor platforms
- Mast Boom Lift: Vertical mast platform elevation cylinder in compact mast-type aerial platforms
- Boom Lift: Secondary lift cylinder in combination boom-and-lift configurations
- Mobile Elevating Work Platform (MEWP): All classes of self-propelled vertical lift platforms
- Truck Mounted Aerial Platform: Elevation stage cylinder on multi-stage truck-mounted lift platforms
OEM Hydraulic Cylinder Manufacturing Capability
The HCYY11112006 is available for OEM supply to aerial platform manufacturers and distributors with the following production capabilities:
- Custom Dimensions: Bore, rod, and stroke modifications to match platform design requirements
- Drawing Approval: Dimensional drawing package for engineering verification before production
- Prototype Development: First-article samples with pressure test and dimensional inspection report
- Sample Production: Pre-production sample batch for platform fit and endurance validation
- Mass Production: Serial production with delivery scheduling to platform assembly program
- Quality Inspection: Full hydrostatic pressure test, dimensional check, and surface quality verification for each unit
Frequently Asked Questions
What is the difference between HCYY11112003 and HCYY11112006 lift cylinders?
Both are aerial work platform lift cylinders, but they differ in bore diameter, rod diameter, stroke, and working pressure to suit different platform weight classes and lift height requirements. The HCYY11112006 has a larger bore (90 mm vs 80 mm) and longer stroke (960 mm vs 820 mm), making it suitable for heavier or taller platform configurations. Selection depends on your specific platform load and height specifications.
Can I use this cylinder as a direct replacement without modifying the hydraulic circuit?
Direct replacement is possible if the bore, stroke, installation distance, and mounting dimensions match your existing cylinder. If the bore diameter changes, the hydraulic force output changes and the system pressure relief valve setting may need adjustment. We recommend submitting your existing cylinder specifications to our engineering team for a compatibility review before ordering replacement cylinders.
Is the HCYY11112006 suitable for rough terrain aerial platforms that experience vibration and shock loads?
Yes. The cylinder is designed with structural safety factors appropriate for the dynamic loading conditions of rough terrain aerial platforms. The rod guide bearing clearance and the piston fit are specified to handle lateral loads from machine vibration without excessive wear. For very demanding rough terrain applications, we can supply the cylinder with reinforced mounting lugs and additional bearing material in the gland for extended durability.
What quality testing is performed on each lift cylinder before shipment?
Each HCYY11112006 is subjected to a static hydrostatic pressure test at 1.5 times the maximum working pressure (37.5 MPa) with all ports plugged to confirm structural integrity. After pressure test, the cylinder is cycled at working pressure to verify smooth movement and zero external leakage. A dimensional inspection confirms bore, rod, stroke, and installation distance compliance with the approved drawing before packing and shipment.
What are your payment and delivery terms for bulk lift cylinder orders?
Standard payment terms for new customers are 30% advance with order and 70% before shipment. For established OEM customers with production agreements, open account terms up to 60 days are available with approved credit. Delivery terms are EXW factory, with FOB and CIF options available for sea freight shipments. Specific delivery terms are confirmed in the purchase order or supply agreement.
Request a Quote for HCYY11112006 Aerial Work Platform Lift Hydraulic Cylinder
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