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{"title":"SB131 Hydraulic Hammer Oil Seal Kit Excavator Hydraulic Breaker Accessories","imgUrl":"https:\/\/img.chinax.com\/nimg\/df\/46\/16b23f14110ab1d7c1ccbad12524-200x200-1\/sb131_hydraulic_hammer_oil_seal_kit_excavator_hydraulic_breaker_accessories.jpg","attrs":{"Materials":"PU+TPFE+FKM+NBR","Application":"Used for maintaining hydraulic breakers to prevent leaks and ensure optimal performance","Durability":"Wear-resistant and long-lasting","Brand Name":"MSGB"}}
{"title":"SB121 Hydraulic Breaker Seal Kit Heavy Duty Corrosion Resistant","imgUrl":"https:\/\/img.chinax.com\/nimg\/5d\/66\/9ace65126ca7601ec994f06c3337-200x200-1\/sb121_hydraulic_breaker_seal_kit_heavy_duty_corrosion_resistant.jpg","attrs":{"Minimum Order Quantity":"10","Preservation Notice":"Closed,Dry and Avoid The Sun","Place of Origin":"China","Delivery Time":"1-7 days"}}
{"title":"Rubber SB81 Hydraulic Rock Breaker Seal Kit Wear Resistant Leak Proof","imgUrl":"https:\/\/img.chinax.com\/nimg\/c8\/44\/7b08f29a82e40b91c1de6939262a-200x200-1\/rubber_sb81_hydraulic_rock_breaker_seal_kit_wear_resistant_leak_proof.jpg","attrs":{"Delivery Time":"1-7 days","Temperaturerange":"-40\u00b0C to 120\u00b0C","Model Number":"PC300-7","Shipping":"Sea Freight\/Air Freight"}}
High-pressure hot mold one-step seamless compression vulcanization under fixed temperature & constant pressure.
Post-vulcanization secondary tempering standing to release internal vulcanization stress of rubber.
Appearance full inspection: surface pinhole, crack, deformation screening one by one.
Random sampling: air tightness inflation test & alternating expansion fatigue durability test.
Qualified finished product surface dust cleaning, individual PE bag sealing packing.
Working Principle
Return stroke: High-pressure hydraulic oil flows into breaker lower cavity, piston moves upward, hydraulic oil enters accumulator oil chamber to squeeze diaphragm inward, inner nitrogen of diaphragm is compressed, hydraulic energy converts into nitrogen compression potential energy for storage.
Oil circuit reverses when piston reaches top dead center, high-pressure oil switches into upper piston cavity.
Power stroke: Compressed high-pressure nitrogen inside diaphragm expands outward instantly, push diaphragm to extrude stored hydraulic oil back into hydraulic circuit, supplement instantaneous high flow to drive piston fast downward striking chisel.
Single striking finished, hydraulic oil pushes diaphragm to compress nitrogen again, repeat reciprocating energy storage & release cycle continuously.
The diaphragm always separates nitrogen gas and hydraulic oil completely to avoid gas-liquid mixing and system pressure failure.
Supplier Supporting Service
24/7 online technical consultation for global buyers: model matching, installation guidance and breakdown troubleshooting.
Three-step pre-delivery QC: raw material inspection → finished appearance screening → random air tightness spot check.
OEM customized service: print customer’s private brand logo on export carton, customizable packing specification.
Multiple global shipping options: sea freight, air freight, international express with full logistics tracking inquiry.
One-stop SB81 full spare supply: seal kit, piston, chisel, front bushing, back head spare parts all in stock.
FAQ
Q1: What causes original diaphragm frequent nitrogen leakage?
A1: Rubber aging, inner crack or pinhole damage caused by over-high pre-charged nitrogen pressure.
Q2: What is the raw material of this SB81 membrane?
A2: High-performance imported HNBR hydrogenated nitrile rubber with anti-aging formula.
Q3: Can I buy one piece sample first before bulk purchase?
A3: Yes, single sample available, bulk order gets preferential tiered pricing.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2008
Total Annual:
20000000-25000000
Employee Number:
90~100
Ecer Certification：
Verified Supplier
Guangzhou Liantuo Machinery Trading Company is a professional cross-border supplier specializing in full-series excavator and construction machinery spare parts. We cover a complete product range, including hydraulic parts, undercarriage components, engine core parts, electrical control parts, sle...
Guangzhou Liantuo Machinery Trading Company is a professional cross-border supplier specializing in full-series excavator and construction machinery spare parts. We cover a complete product range, including hydraulic parts, undercarriage components, engine core parts, electrical control parts, sle...
