Soosan SB121 Hydraulic Breaker Cylinder Block OEM 20CrMo Middle Hammer Cylinder
Price:
Negotiable
MOQ:
1
Delivery Time:
1-7 days
Brand:
MSGB
Product Description
High hardness 20CrMo forged SB121 middle cylinder for Soosan SB121 excavator rock breaker, OEM replacement center cylinder with, wholesale price available.
Core Product Features
- Integral die forging blank forming, compact internal metal grain, no internal shrinkage cavity or sand hole, anti-deformation under long period alternating pressure.
- Inner cylinder wall high-frequency quenching treatment, 1.2~1.5mm thick wear-resistant hardened layer, resist piston reciprocating scratch abrasion.
- All internal oil passage CNC one-step drilling, smooth inner channel without burr, stable hydraulic oil circulation to avoid pressure loss.
- All through bolt installation hole, valve mounting hole precise tapping, consistent OEM hole spacing, direct assembly without field reaming.
- Stress relief tempering after finish machining, eliminate processing internal stress, effectively prevent cylinder body crack under cold-hot alternating construction environment.
- Black anti-rust finish on outer surface, anti-corrosion for muddy, damp open-air mine working condition.
- Independent solid wooden case packaging, avoid collision deformation during long-distance sea & land transportation.
Advanced Production Technology
- 20CrMo alloy steel bar incoming spectrum inspection, chemical composition & mechanical performance test to reject inferior recycled steel.
- High-temperature integral die forging, multiple forging compaction to optimize internal metal structure.
- Rough machining outer outline + pre-drill all oil passage and mounting holes.
- Fine boring inner cylinder bore to guarantee precision tolerance matching with piston.
- Inner wall high-frequency surface quenching + low temperature tempering to lock hardness and remove quenching stress.
- Full finish tapping for all thread holes, strict OEM dimension calibration.
- Full dimensional inspection + hydraulic pressure leakage test before finished storage.
Product Application
- Core overhaul replacement spare for SB121 breaker when original cylinder inner bore scratch crack, oil channel blockage, body crack happen.
- Solve typical faults: continuous internal hydraulic leakage, insufficient impact force, cylinder overheating, frequent seal burnout.
- Regular heavy maintenance spare for 20~30t excavator equipped SB121 hammer in quarry mining, rock excavation, road demolition, municipal foundation construction.
- Bulk stocking core spare parts for global construction machinery spare parts wholesaler and local professional breaker repair factory.
- Adapt to heavy-load continuous working in granite mine, reinforced concrete breaking, frozen soil excavation harsh working scenarios.
FAQ
Q1: Which hydraulic breaker fits this SB121 middle cylinder?
A1: Specially for Soosan SB121, SB121TS, SB121TR hydraulic breaker for 20~30 ton excavator.
Q2: What material is your SB121 cylinder made of?
A2: Integral forged 20CrMo chrome molybdenum alloy steel with inner wall surface quenching treatment.
Q3: Why original cylinder easily crack in mining work?
A3: Inferior cast iron blank without standard heat treatment, poor toughness against frequent impact load.
Q4: Can I buy one piece sample before bulk purchase?
A4: Sample purchase is available, big bulk order enjoys preferential price and priority delivery.
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Get in Touch
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Company
Guangzhou Liantuo Machinery Trading Company
Location
255 Zhongshan Ave, Maogang, Huangpu Dist, Guangzhou, Guangdong, China
Contact Person
liantuo