Komatsu PC1250 Stick Cylinder Assembly OEM Heavy Duty Mining Excavator Arm Cylinder

This premium Komatsu PC1250 stick cylinder assembly is an OEM-spec PC1250 arm hydraulic cylinder, a dedicated excavator stick cylinder for Komatsu PC1250 large mining excavators. As a reliable Komatsu replacement hydraulic cylinder and heavy duty mining excavator cylinder, it is an essential excavator hydraulic spare part for stick swinging and heavy-load digging. Built with thickened alloy steel cylinder tube and imported multi-layer sealing system, it effectively solves oil leakage, weak digging thrust, slow arm movement, pressure loss and jitter. Strict 1:1 original mounting dimensions for direct plug-and-play installation. It performs stably in open-pit mining, quarry stripping and heavy earthwork conditions.

• 1:1 OEM size matching PC1250, direct installation without modification
• Thickened alloy steel cylinder barrel, high pressure resistance, no deformation under heavy load
• Hard chrome plated piston rod, wear & scratch resistant, adapts to harsh mining sites
• Imported multi-layer seals, oil & high temperature resistant, long-term zero leakage
• Built-in buffer structure, reduces hydraulic impact, protects main pump and pipelines
• Sensitive telescopic response, stable stick movement, restores original digging efficiency
• Complete assembly delivery, full accessories, saves on-site maintenance time

This PC1250 stick cylinder adopts mining-grade heavy-duty hydraulic cylinder manufacturing technology. The cylinder tube undergoes precision deep hole boring and mirror polishing to reduce friction heat and internal wear. The piston rod goes through high-frequency quenching + hard chrome plating for high surface hardness and overall toughness. Integral forged piston and seamless welding ensure compact internal structure. Imported high-temperature seals prevent aging and leakage under frequent impact. Every finished cylinder passes 24-hour constant pressure test and reciprocating fatigue test.

This PC1250 stick cylinder adopts mining-grade heavy-duty hydraulic cylinder manufacturing technology. The cylinder tube undergoes precision deep hole boring and mirror polishing to reduce friction heat and internal wear. The piston rod goes through high-frequency quenching + hard chrome plating for high surface hardness and overall toughness. Integral forged piston and seamless welding ensure compact internal structure. Imported high-temperature seals prevent aging and leakage under frequent impact. Every finished cylinder passes 24-hour constant pressure test and reciprocating fatigue test.

Special replacement hydraulic part for Komatsu PC1250 large mining excavators. Widely used in open-pit mining, quarry stone stripping, large-scale earthwork, road construction and mine infrastructure projects. Mainly used to replace old cylinders with oil leakage, weak thrust, slow movement and pressure loss, quickly restore excavator working performance. It is an essential spare part for mine machinery repair workshops and engineering fleets.

• ✅ Perfect OEM Fit: Exactly matches PC1250 hydraulic system, zero installation error, no modification needed
• ✅ Mining-grade Performance: 31.4MPa pressure resistance, no power drop during continuous mining operation
• ✅ Zero Leakage: Imported wear-resistant seals, fundamentally solves cylinder oil leakage faults
• ✅ High Efficiency: Sensitive response and smooth movement, improves mining construction progress
• ✅ Durable & Low Failure: Reinforced alloy structure, impact resistant, low maintenance frequency
• ✅ Cost-Effective: Factory direct supply, OEM quality at competitive price, reduces fleet maintenance cost

Q1: Which excavator does this stick cylinder fit?

A1: It is specially designed for Komatsu PC1250 series large mining excavators, with 250mm bore and 2435mm stroke matching original specifications.

Q2: What faults can this new cylinder fix?

A2: It solves common problems including weak stick thrust, slow movement, hydraulic oil leakage, arm jitter and insufficient pressure holding.

Q3: Is modification needed during installation?

A3: No modification required. 1:1 OEM size, plug-and-play installation, perfectly matches original mounting points and hydraulic interfaces.

Q4: Will it leak oil after long-term mining work?

A4: No. It adopts imported multi-layer composite seals and passes strict 31.4MPa high-pressure test, ensuring no leakage under long-term heavy-load mining operation.

Q5: Do you support bulk wholesale for mining fleets?

A5: Yes, we support bulk orders for mining repair workshops and engineering fleets with competitive quotation and stable after-sales support.