{"id":1458,"date":"2026-08-26T02:44:12","date_gmt":"2026-08-26T02:44:12","guid":{"rendered":"https:\/\/ever-powers.com\/?post_type=product&p=1458"},"modified":"2026-08-26T03:51:21","modified_gmt":"2026-08-26T03:51:21","slug":"combine-header-lift-cylinder-63mm","status":"publish","type":"product","link":"https:\/\/ever-powers.com\/kk\/product\/combine-header-lift-cylinder-63mm\/","title":{"rendered":"Header Lift Cylinder for Combine Harvester | 63mm Bore, 350mm Stroke"},"content":{"rendered":"
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\"Header<\/div>\n
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Model: \u5272\u53f0\u6cb9\u7f38 \/ Header Lift<\/p>\n

Header Lift Cylinder \u2014 Combine Harvester<\/h2>\n

The header lift cylinder<\/strong> is the primary actuator responsible for raising and lowering the cutting platform on a combine harvester. This unit \u2014 bore 63 mm, rod 55 mm, stroke 350 mm, closed length 480 mm \u2014 is engineered for high-force, high-cycle operation across cereal, rice, soybean, and maize harvest platforms where consistent cutting height directly determines grain loss rates.<\/p>\n

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Key Specifications<\/p>\n

Bore Diameter<\/span>63 mm<\/span>
\nRod Diameter<\/span>55 mm<\/span>
\nStroke<\/span>350 mm<\/span>
\nMounting Length<\/span>480 mm<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Header Lift Cylinder for Combine Harvester: Role and Operating Demands<\/h2>\n

No hydraulic function on a combine is exercised more continuously than header height control. Over a typical 500-acre harvest day, the operator adjusts header height dozens to hundreds of times \u2014 responding to slope changes, headlands, wet patches, and crop stand variation. The combine header hydraulic cylinder that handles this workload needs to be more than just a force-delivery device: it needs to be a precision positioning actuator that responds consistently, holds position under gravity-assisted header weight, and survives the cumulative fatigue of repetitive full-cycle operation.<\/p>\n

The 63 mm bore on this cylinder is the largest in the standard combine cylinder lineup we offer. Bore area of approximately 31.2 cm\u00b2 means that at 150 bar system pressure, the push force reaches approximately 46.8 kN \u2014 enough to lift and rapidly re-position headers weighing 500\u2013900 kg, including those carrying mud and wet crop residue load that can add 20\u201330% to dry weight during adverse conditions.<\/p>\n

The high rod-to-bore ratio (55\/63 = 87%) is a deliberate engineering choice for this application. A thicker rod reduces the annulus-side area differential, which in practice means pull force approaches push force more closely \u2014 important when combine header designs load the cylinder in both directions during terrain following, rather than relying purely on header weight for the retract stroke.<\/p>\n

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\"Reaper<\/p>\n

The header lift cylinder controls cutting platform height across the full harvest pass, from headland to headland.<\/p>\n<\/div>\n

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63mm Bore Combine Header Hydraulic Cylinder Replacement: Dimensional Compatibility Explained<\/h2>\n

When sourcing a replacement header lift cylinder, the four core dimensions \u2014 bore, rod, stroke, and closed length \u2014 must all match. Substituting a cylinder with even a 5 mm stroke variance will alter the calibrated height stops on your combine’s electronic header control system, requiring recalibration and potentially compromising auto-contour response on sloped ground.<\/p>\n