Hunan Chengzhai Machinery Equipment Co., Ltd.
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- Rocker Arm Assembly 12420479 (Genuine DEUTZ/MWM Part)
- Product Details
- Company Details
Product Specification
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|
|
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| Fitting Clearance between Rocker Arm and Shaft |
0.015–0.040 mm |
Packaging Details |
Original packaging |
| Contact Surface Width at Valve End |
12 mm |
Delivery Time |
15days |
| ocker Ratio |
1.75:1, amplifying cam lift to increase valve opening stroke |
Unit Weight |
Approx. 1.2 kg per piece |
| Shaft Diameter (Bushing Inner Diameter) |
φ16 mm |
Adjusting Screw Specification |
M9×1 |
| Payment Terms |
T/T,Western Union |
Supply Ability |
9999 |
| Place of Origin |
Germany |
Brand Name |
MWM DEUTZ |
| Model Number |
12420479 |
| |
Part No. 12420479 is a valve rocker arm assembly for DEUTZ MWM gas engine series. It is a genuine original part matched with the valve train including valves, valve seat inserts, valve guides, valve stem seals and valve springs.
1. Basic Information
- Part Number: 12420479
- Name: Rocker Arm Assembly
- Brand: DEUTZ / MWM
- Applicable Models:
DEUTZ MWM TBG/TCG 2020/2032 series gas engines
DEUTZ TCG 620 V12/V16/V20 series
BF6M1013, BF4M2012 industrial, power generation and marine engines
- Applicable Valves: Universal for intake and exhaust valves (valve stem diameter: φ8 mm)
- Function: Core component of the valve train, transmitting thrust from the camshaft to drive valve opening and closing.
2. Material & Manufacturing Process
- Main Body Material: Alloy cast iron / Ductile iron, featuring high strength, high rigidity and excellent impact resistance.
- Bushing Material: Copper-tin based alloy (CuSn) with self-lubricating property, outstanding wear resistance and low friction.
- Heat Treatment: Overall quenching and tempering plus high-frequency quenching on working surfaces. Hardness: HRC 52–58.
- Surface Treatment: Black oxide / Phosphating for rust prevention and resistance to oil and gas corrosion.
- Operating Temperature: -40℃ ~ +450℃, suitable for high-temperature service of gas engines.
3. Key Dimensions (Original Standard)
- Rocker Ratio: 1.75:1, amplifying cam lift to increase valve opening stroke
- Shaft Diameter (Bushing Inner Diameter): φ16 mm
- Fitting Clearance between Rocker Arm and Shaft: 0.015–0.040 mm
- Contact Surface Width at Valve End: 12 mm
- Adjusting Screw Specification: M9×1
- Unit Weight: Approx. 1.2 kg per piece
4. Functions & Features
- Precise Power Transmission: Optimized rocker ratio ensures accurate valve timing and stable valve lift.
- Long Service Life: Combination of alloy cast iron and copper bushing delivers great resistance to alternating loads and wear.
- Adjustable Clearance: Equipped with M9 adjusting screw and lock nut for precise control of valve lash.
- High Temperature Stability: Resists thermal deformation and carbon deposition, free from sticking during long-term operation of gas engines.
- Reliable Lubrication: Built-in oil passage provides forced lubrication for bushings and contact surfaces to reduce wear.
5. Replacement & Compatibility
- Genuine Alternative Part No.: 12420479 (No updated replacement part)
- Recommended Aftermarket Brands: ELRING, INA, CTP. The rocker ratio, shaft diameter, material and adjusting screw specification must be fully matched.
6. Installation Instructions
- Inspection & Cleaning: Check the rocker arm for cracks and deformation, and confirm the bushing is firmly fitted. Ensure all oil passages are unobstructed.
- Fitting Clearance: Maintain the clearance between rocker arm and shaft within 0.015–0.040 mm. Replace the bushing if the tolerance is out of range.
- Installation Sequence: Install the rocker shaft first, then fit the rocker arm and mount the adjusting screw.
- Valve Lash (Cold State): 0.25–0.30 mm for intake valves; 0.35–0.40 mm for exhaust valves.
- Tightening Torque: Lock nut of adjusting screw: 20±5 Nm; Rocker shaft bolt: 40±5 Nm.
- Complete Replacement: Replace together with valves, valve seat inserts, valve guides, valve stem seals and valve springs to ensure reliable performance of the entire valve train.
Company Details
Bronze Gleitlager
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Graphite Plugged Bushings
from Quality China Factory
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Business Type:
Trading Company,Seller,Exporter,Importer,Distributor/Wholesaler,Manufacturer,Agent
-
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Total Annual:
CNY 20M-CNY 50M
-
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Ecer Certification：
Verified Supplier
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