The 8094845 Piston Ring Set is a CNH Original (Genuine) standard-size (TOR STD) engine component engineered for Case 580 M Series 2, M Series 3, N, and Super variants. This complete ring set is designed to restore optimal combustion sealing, oil control, and heat transfer between the piston and cylinder wall.
In the exploded piston assembly, this set is identified as DIAGRAM NO. 4, representing the three critical ring functions installed on the piston:
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Top Compression Ring – seals combustion pressure
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Second Compression Ring – assists sealing and controls blow-by
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Oil Control Ring – regulates oil film and prevents oil consumption
This TOR STD set includes:
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Top Compression Ring: 2854603
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Second Compression Ring: 2830158
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Oil Control Ring: 2852037
Manufactured to strict CNH OEM tolerances, each ring is produced from high-grade materials with precision profiles and surface finishes to ensure correct ring tension, rapid seating, and long-term durability under heavy-duty operating conditions. Proper piston ring performance is essential for maintaining engine compression, reducing oil consumption, and protecting cylinder liners from abnormal wear.
This genuine ring set is recommended during:
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Engine overhaul or rebuild
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Piston replacement or inspection
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Loss of compression or excessive blow-by
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High oil consumption diagnosis
Using CNH Original piston rings ensures exact fitment, correct metallurgy, and reliable engine performance consistent with factory specifications.
Key Functions & Benefits
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Seals combustion chamber for maximum compression
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Controls oil consumption and cylinder lubrication
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Transfers heat from piston to cylinder wall
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OEM-standard ring tension and durability
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Designed for heavy-duty construction engines
8094845 活塞环套件为 **CNH 原厂正品(Genuine)**标准尺寸(TOR STD)发动机零件,适用于 Case 580 M2、M3、N 及 Super 系列反铲装载机。该套件用于恢复发动机燃烧密封性、机油控制能力以及活塞与缸套之间的热传导性能。
在活塞总成爆炸图中,该活塞环组件标示为 DIAGRAM NO. 4,包含三种关键功能环:
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第一道压缩环(Top Compression Ring):密封燃烧压力
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第二道压缩环(Second Compression Ring):辅助密封并减少窜气
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机油环(Oil Control Ring):控制机油膜、防止烧机油
TOR STD 套件包含:
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第一压缩环:2854603
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第二压缩环:2830158
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机油环:2852037
该活塞环按照 CNH 原厂标准制造,具备精准尺寸、公差及弹性张力,确保快速磨合、稳定密封及长期耐用性。优质活塞环可有效防止压缩泄漏、降低机油消耗,并延长缸套使用寿命。
主要特点
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提供良好燃烧密封
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控制机油消耗
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提升发动机效率
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原厂材料与精密加工
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适合工程机械高负荷工况




