Description
Agricultural Hydraulic Cylinder for Grain Tank Lifting Systems
The HCYY11112016 is a purpose-built agricultural hydraulic cylinder engineered specifically for grain tank lifting mechanisms on modern combine harvesters. With a bore specification of Phi65xPhi35x607mm, rated working pressure of 16.7MPa, and maximum withstand pressure of 24.5MPa, this unit handles the repetitive, high-load duty cycles that define grain harvest season. The 607mm stroke delivers the full angular travel required to raise and hold a loaded grain tank securely while the unloading auger operates. At 18kg, the weight-to-strength ratio reflects careful material selection without unnecessary mass penalty on the machine.
Technical Specifications
Every procurement decision for a combine harvester hydraulic cylinder starts with matching the specification to the machine’s structural requirements. The table below consolidates the full parameter set for confirmed compatibility checks and hydraulic circuit sizing.
| Parameter | Value | Notes |
|---|---|---|
| Model | HCYY11112016 | OEM-replaceable |
| Specifications | Phi65 x Phi35 x 607mm | Bore x Rod x Length |
| Working Pressure | 16.7 MPa | Rated continuous duty |
| Max. Withstand Pressure | 24.5 MPa | Static proof pressure |
| Stroke | 607 mm | Full extension travel |
| Installation Distance | 823 mm | Pin-to-pin retracted |
| Weight | 18 kg | Dry weight |
Engineering Design and Construction Quality
Agricultural field conditions rank among the most demanding environments for any hydraulic actuator. Dust, crop debris, temperature swings, and continuous vibration combine to stress every component. The HCYY11112016 addresses each of these realities through deliberate material and process choices.
High-Strength Alloy Steel Barrel
The cylinder barrel is cold-drawn from high-strength alloy steel tube, honed internally to Ra 0.4-0.8um. This surface finish directly governs seal life — tighter honing tolerances translate to longer seal service intervals and fewer in-season breakdowns when replacement parts may be hours away from the field.
Chrome-Plated Piston Rod
The 35mm piston rod receives hard chrome plating ground and polished to tolerance after plating. Surface hardness reaches approximately 68-72 HRC, providing corrosion resistance against rain, dew, and fertiliser splash, plus the low-friction surface that gland seals depend on for service life.
Precision Sealing System
The HCYY11112016 uses a composite seal kit comprising a polyurethane piston seal, PTFE-backed rod seal, and nitrile rod wiper — validated for agricultural duty across thousands of service hours. Seal compounds resist wide temperature range and remain compatible with ISO VG 46/68 mineral hydraulic oils specified by machine OEMs.
Application: Grain Tank Lifting in Combine Harvesters
The grain tank on a modern combine harvester holds several tonnes of harvested grain. During field operation, the tank must lift sufficiently to allow grain to feed into the unloading auger. The agricultural machinery cylinder handling this motion operates under dynamic loading — grain shifts as the machine traverses uneven terrain — with cycle frequency varying by field conditions.
The HCYY11112016’s 607mm stroke and 823mm pin-to-pin installation distance match the lever geometry used in mainstream combine designs. This cylinder can serve as a direct replacement for equipment originally fitted with Parker, Bosch Rexroth, or Hydac OEM cylinders where bore, stroke, and mounting dimensions align. Contact our technical team with your machine model for a confirmed fitment assessment.
Performance Advantages
Honed bore and hard chrome rod extend seal intervals, reducing mid-season replacements and keeping machines productive during the harvest window.
Phosphate-and-paint exterior with chrome rod handles fertiliser, moisture, and crop chemical exposure found in grain fields worldwide.
Standard clevis-to-clevis with optional pin kits. Bore, stroke, and port orientation adjustable for OEM-level integration into new machine designs.
Every cylinder pressure tested to 1.5x working pressure, with rod dimensional verification and seal leakage inspection before shipment.
Installation Steps
Both mounting pins must be parallel. Angular misalignment over 1 degree imposes side-loading on the rod seal and accelerates wear.
Flush hoses before connecting to remove installation debris. Particulate contamination is the leading cause of premature seal failure.
Cycle slowly through five full strokes to purge air from the system before applying full working pressure.
Tighten hydraulic fittings to the torque specification for the thread standard used — over-torquing deforms threads; under-torquing allows seepage.
Maintenance and Service Life
A hydraulic cylinder for farm equipment maintained correctly will outlast multiple harvests. The HCYY11112016 gland assembly uses a standard hex pattern addressable with common tools, and seal kits are available separately to avoid complete cylinder replacement when only seals require attention.
Inspect the rod surface and wiper seal visually at the start of each season and mid-season. Any sign of oil film weeping past the wiper, or rod surface pitting, warrants gland inspection. Check hydraulic fluid condition at the same intervals — oxidized or water-contaminated fluid degrades seal compounds and is a primary contributor to premature cylinder failure.
Manufacturing Facility and Quality Standards
Hangzhou Ever-Power Hydraulic Cylinder Co., Ltd. operates a purpose-built facility in Hangzhou, Zhejiang Province. CNC honing machines, hard chrome plating lines, automated welding stations, and a dedicated pressure test bay ensure every cylinder meets specification before leaving the production floor. Production capacity spans 25mm to 320mm bore across a wide stroke range, supporting standard catalogue orders and complex OEM supply programs.
Contact and Ordering
Standard units ship from Hangzhou within 7-15 working days. Custom bore/stroke variants require 20-30 working days from drawing confirmation. Contact us at +86-571-88220653 or [email protected]. For confirmed fitment on a specific combine model, visit our about us page or use the contact form.
