Changzhou Yulindingli Construction Machinery Co.,Ltd.
| Kit Includes | Piston Seal, Buffer Seal, Dust Wiper, O-Ring, Back Up Ring, Accumulator Seals |
| Packaging Details | Standard Wooden Case Packaging |
| Fit Models | B series |
| Seal Kits Material | FKM Viton, HNBR, Abrasion Resistant PU, PTFE Back-up Ring, NBR |
| Product Name | Hydraulic Breaker Diaphragm |
| Buffer Material | High Density PU, HNBR, FKM, Reinforced Composite Rubber, Customizable |
| Payment Terms | L/C,D/A,D/P,T/T,Western Union |
| Operating Temp | -35℃ ~ +130℃ |
| Size | Based on original drawings, customization available |
| Diaphragm Material | Fiber Reinforced HNBR, FKM Viton, High Toughness Composite Rubber |
| Available Chisel Types | Moil Point, Wide Flat Chisel, Wedge Chisel, Blunt Tool, Asphalt Cutter |
| Delivery Time | 15-30 days |
| Hardness | 70–85 Shore A |
| Chisel Material | 40Cr 42CrMo 20CrMo GCr15 40CrNiMo 9Cr2Mov SCM440 SAE4140 SAE4340 Customizable |
| Alias | Accumulator Diaphragm, Nitrogen Isolation Membrane, Rubber Energy Storage Film |
| Applicable Brand | CAT |
| Model Number | CatB1 CatB2 CatB4 CatB6 CatB30 |
| Brand Name | YULINDINGLI |
| Certification | ISO9001 , CE Certified |
| Place of Origin | China |
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Product Specification
| Kit Includes | Piston Seal, Buffer Seal, Dust Wiper, O-Ring, Back Up Ring, Accumulator Seals | Packaging Details | Standard Wooden Case Packaging |
| Fit Models | B series | Seal Kits Material | FKM Viton, HNBR, Abrasion Resistant PU, PTFE Back-up Ring, NBR |
| Product Name | Hydraulic Breaker Diaphragm | Buffer Material | High Density PU, HNBR, FKM, Reinforced Composite Rubber, Customizable |
| Payment Terms | L/C,D/A,D/P,T/T,Western Union | Operating Temp | -35℃ ~ +130℃ |
| Size | Based on original drawings, customization available | Diaphragm Material | Fiber Reinforced HNBR, FKM Viton, High Toughness Composite Rubber |
| Available Chisel Types | Moil Point, Wide Flat Chisel, Wedge Chisel, Blunt Tool, Asphalt Cutter | Delivery Time | 15-30 days |
| Hardness | 70–85 Shore A | Chisel Material | 40Cr 42CrMo 20CrMo GCr15 40CrNiMo 9Cr2Mov SCM440 SAE4140 SAE4340 Customizable |
| Alias | Accumulator Diaphragm, Nitrogen Isolation Membrane, Rubber Energy Storage Film | Applicable Brand | CAT |
| Model Number | CatB1 CatB2 CatB4 CatB6 CatB30 | Brand Name | YULINDINGLI |
| Certification | ISO9001 , CE Certified | Place of Origin | China |
| High Light | Fiber Reinforced Hydraulic Breaker Diaphragm ，Rubber Hydraulic Breaker Diaphragm ，hydraulic hammer tools Diaphragm | ||
Fiber Reinforced Rubber CAT B Breaker Diaphragm Nitrogen Accumulator Isolation Membrane For Excavator Hammer
CAT B series hydraulic breaker diaphragm is the core elastic rubber component installed inside the rear nitrogen accumulator of all CAT B medium hydraulic breakers from B12 to B90. As an isolation film between high-pressure nitrogen and hydraulic oil, it stores rebound energy to boost striking efficiency, widely used in municipal demolition, road renovation, landscaping excavation and medium quarry secondary rock crushing projects.
Made of fiber-reinforced HNBR and FKM composite rubber via integrated compression molding. Built-in fiber reinforcement layer enhances tear resistance, avoiding crack and permanent deformation under repeated reciprocating expansion. The material features excellent hydraulic oil resistance and high temperature stability to adapt dusty, high-load construction environments.
Uniform wall thickness and precise OEM dimensions ensure seamless fit with the accumulator cavity, fully blocking gas-oil mixing and nitrogen leakage. A intact diaphragm keeps stable nitrogen pressure, maximizes energy recovery and reduces blank firing abrasion of piston, seal kits and metal wear parts. It can be matched with complete CAT B seal kits for full machine overhaul to cut equipment downtime greatly.
Each batch of diaphragms passes nitrogen tightness test, reciprocating fatigue cycle test and high-temperature oil aging inspection to meet original equipment interchange standards. Full model stock supports small retail maintenance orders and large bulk wholesale for construction contractors and machinery rental firms. Custom diameter, thickness and special anti-aging rubber formula can be customized for global machinery maintenance factories and spare parts dealers.
| Part Name | CAT B Series Hydraulic Diaphragm |
| Fit Models |
|
| Position | Hydraulic Breaker Front Head System |
| For |
CAT Hydraulic Breaker Hydraulic Hammer |
| Material | 40Cr , 42CrMo , 20CrMo , GCr15 , 40CrNiMo , 9Cr2Mov , SCM440 , SAE4140 , SAE4340 , Customizable |
| Certification | ISO9001 , CE Certified |
| Packaging Details | Packed by standard export wooden box |
| Delivery Time | 15-30 days upon payments confirmed |
| Brand | YULINDINGLI , CAT |
| Payment Terms | PayPal , Western Union , , T'T in advance , L/c at sight , Alipay etc |
Hydraulic Breaker Hammer Chisel of Shipping photos
Hydraulic Breaker Hammer Chisel of factory photos
Workers Inspecting Hydraulic Breaker Chisels
Heat Treatment Process of Hydraulic Breaker Chisels
We also provide other brands of hydraulic breaker spare parts
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler
Year Established:
2008
Total Annual:
5000000-10000000
Employee Number:
51~200
Ecer Certification：
Verified Supplier
Changzhou Yulindingli Construction Machinery Co., Ltd. is a hydraulic breaker accessories manufacturer, specializing in the production of breaker chisels (hydraulic breaker working tools) and related accessories. The Yulindingli factory produces tens of thousands of series breaker chise... Changzhou Yulindingli Construction Machinery Co., Ltd. is a hydraulic breaker accessories manufacturer, specializing in the production of breaker chisels (hydraulic breaker working tools) and related accessories. The Yulindingli factory produces tens of thousands of series breaker chise...
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