81.51101.6264 F3000 Front Air Chamber M16

81.51101.6264 is an exclusive M16 specification front air chamber for SHACMAN F3000 series heavy-duty trucks, serving as the core executive component of the vehicle front axle pneumatic brake system. It converts the compressed air pressure of the brake system into mechanical thrust, pushing the brake shoe to contact the brake drum and realize vehicle deceleration and parking. The M16 connecting thread design ensures firm and precise assembly with the brake bracket, guarantees stable brake force output, and adapts to harsh working conditions of heavy-duty trucks such as heavy-load transportation, frequent braking, long downhill driving and complex road operation.

Applicable Vehicles: SHACMAN F3000 series heavy-duty trucks (tractors, dump trucks, cargo transport vehicles, special-purpose vehicles)

Adaptable Systems: Original factory front axle pneumatic brake system, matching with air dryer, brake valve, air pipeline and brake shoe assembly

OE Reference Number: 81.51101.6264

Interchangeability: Direct replacement of original factory front air chamber, M16 thread perfectly matches the brake bracket mounting interface, precise fitting of push rod and brake shoe connection position, no need to modify the brake system structure or air pipeline

Value-added Service: Support vehicle VIN code-based configuration verification, provide professional matching suggestions for pneumatic brake system pressure parameters and assembly specifications

Main Dimensions: Chamber body outer diameter 200±2mm, total length 320±3mm; M16×2 fine thread connecting port (thread length 30±1mm); push rod stroke 50±2mm, push rod diameter 25±0.5mm

Material Specification: Chamber body made of high-quality cold-rolled steel plate (stretching forming), end cover made of cast iron HT200, push rod made of 45# carbon steel, sealing ring made of nitrile rubber (NBR) with high oil resistance and aging resistance

Rated Working Pressure: 0.8MPa (maximum working pressure 1.0MPa, meets heavy-duty truck brake system pressure requirements)

Output Thrust: ≥ 25kN (under rated pressure, ensures sufficient brake force for heavy-load operation)

Operating Temperature Range: -40℃~120℃ (adapts to extreme temperature changes in different regions)

Sealing Performance: No air leakage under 1.2 times rated pressure test for 30min, pressure drop ≤0.01MPa

Fatigue Life: ≥ 1 million times of reciprocating action (resists frequent braking of heavy-duty trucks)

Protection Grade: IP65 (dustproof, waterproof and oilproof, suitable for chassis harsh working environment)

Core Materials: High-strength cold-rolled steel (chamber body, good stretching performance and pressure resistance), HT200 cast iron (end cover, high structural strength), 45# carbon steel (push rod, quenched and tempered for high toughness), NBR nitrile rubber (sealing ring, excellent air tightness and aging resistance), stainless steel spring (return spring, anti-fatigue and anti-rust)

Surface Treatment: Chamber body adopts electrophoretic coating + powder coating double anti-corrosion treatment, push rod adopts galvanizing + passivation treatment, cast iron end cover adopts anti-rust paint spraying; all metal parts are treated with anti-corrosion and anti-oxidation

Production Process: Precision steel plate stretching (chamber body), CNC machining (M16 thread and mounting surface), high-precision casting (end cover), quenching and tempering heat treatment (push rod), professional sealing assembly, air tightness pressure test, push rod stroke calibration, 100% performance detection before leaving the factory

Production Line Capacity: Equipped with automatic steel plate stretching equipment and CNC machining centers, monthly output ≥ 8000 pieces; standardized assembly line ensures consistent product precision

Quality Grade: High-quality aftermarket parts, fully compliant with SHACMAN original factory technical standards and GB/T 13594 automotive pneumatic brake air chamber specifications

Inspection Items: Dimensional accuracy test (M16 thread and push rod stroke), air tightness pressure test, output thrust test, fatigue life test, high and low temperature operation test, corrosion resistance salt spray test, push rod flexibility test

Quality System: IATF16949, ISO9001 certified, strict implementation of incoming material inspection, process inspection and final product inspection; the whole production process is traceable

Batch Tracking: Support full batch traceability, each air chamber is marked with batch number, production date and OE number on the chamber body, and complete production and test records are retained for 3 years

Average Service Life: ≥ 8 years (or 600,000 kilometers) under normal working conditions and regular maintenance

Performance Improvement: Double anti-corrosion treatment of chamber body effectively resists chassis corrosion and extends service life; high-quality NBR sealing ring ensures long-term air tightness without leakage; M16 fine thread connection has high assembly precision and strong anti-loosening performance; optimized return spring design ensures fast brake release and no jamming

Harsh Environment Adaptation: Resists -40℃ extreme low temperature without sealing ring hardening and air leakage; withstands 120℃ high temperature without sealing ring aging and spring fatigue; adapts to dusty construction sites, humid coastal areas and muddy road conditions, no internal component jamming; resistant to vehicle chassis vibration and impact, no chamber body deformation and thread loosening

Common Fault Improvement: Solves the problems of the original front air chamber such as air leakage, insufficient output thrust, push rod jamming, brake release delay and chamber body corrosion caused by poor sealing performance and low material grade

Maintenance Value: Direct assembly replacement without disassembling the entire front axle brake system, reducing maintenance time by 30%; long service life reduces replacement frequency and maintenance costs; stable air tightness and sufficient thrust ensure reliable braking performance, avoiding potential safety hazards such as brake failure and brake deviation

Packaging Configuration: Individual EPE anti-collision foam wrapping (chamber body) + plastic film sealing (moisture-proof) + corrugated carton; push rod and thread part are protected by plastic sleeves to prevent collision damage; bulk orders are packed with wooden pallets (fixed with steel straps)

Outer Carton Marking: OE number, product name (F3000 Front Air Chamber M16), applicable vehicle models, quantity, batch number, production date, gross weight, net weight, anti-collision and moisture-proof warning signs

Product Marking: Laser marking of OE number, rated working pressure, M16 thread specification, batch number and production date on the chamber body; push rod is marked with stroke scale for easy adjustment

Customization Service: Support neutral packaging or customized packaging with customer brand logo; support customized push rod length for special brake system modification needs

Inventory Status: In-stock supply for SHACMAN F3000 series mainstream models

Minimum Order Quantity (MOQ): 5 pieces (sample order acceptable with MOQ 1 piece)

Delivery Cycle: 3 working days for spot goods; 8-15 working days for bulk customized orders (depending on customization requirements)

Supply Stability: Monthly output ≥ 8000 pieces, stable supply of steel plate, cast iron and rubber raw materials, mature production process ensures no delivery delay; sufficient safety stock for emergency maintenance orders

Certification Qualifications: IATF16949, ISO9001 certified; compliant with GB/T 13594 national standard; can provide third-party test reports (air tightness, output thrust, fatigue life)

Quality Guarantee Policy: 24-month warranty, 7-day free replacement and return for non-human damage (such as air leakage, push rod jamming, chamber body corrosion without improper use and external impact)

Technical Support: 24-hour online technical response, providing installation guidance, M16 thread assembly torque specifications, pneumatic brake system fault diagnosis and troubleshooting solutions

Return and Exchange Policy: Accept return and replacement for non-human damage, freight borne by the supplier; provide fast replenishment service for defective products to minimize vehicle downtime

Northern China Long-haul Transportation: Applied to SHACMAN F3000 tractors operating in Jilin and Heilongjiang, the air chamber runs stably in -35℃ low temperature, no sealing ring hardening and air leakage, sufficient brake force for long downhill driving, service life exceeding 650,000 kilometers

Northwest Construction Site: Used in SHACMAN F3000 dump trucks in Xinjiang Gobi region, double anti-corrosion treatment resists sand and dust erosion and temperature difference, no chamber body corrosion and push rod jamming, stable braking performance under 50-ton heavy-load operation

Southern China Coastal Area: Adapted to SHACMAN F3000 cargo trucks in Fujian and Guangdong, IP65 protection grade and anti-corrosion treatment effectively resist salt spray and moisture corrosion, no air leakage and thread rust after 6 years of use, brake response remains sensitive

Installation: Clean the M16 thread of the brake bracket and the contact surface before installation; apply anti-seize lubricant on the thread to prevent rust and jamming; tighten the air chamber to the brake bracket with the specified torque (85-95N·m); connect the air pipeline according to the inlet and outlet marks (no reverse connection); check the push rod stroke and flexibility after installation, ensure no jamming.

Inspection: Check the air chamber for air leakage, chamber body deformation and thread loosening every 30,000 kilometers; check the push rod for bending and rust, and the sealing ring for aging and damage; drain the water in the brake system regularly to avoid moisture corroding the internal components.

Storage: Store in a dry and ventilated warehouse, avoid contact with water, oil and corrosive substances; the M16 thread and push rod end should be protected with plastic sleeves; place horizontally to prevent chamber body deformation and push rod bending.

Replacement: Replace the air chambers of the left and right front axles in pairs to ensure consistent brake force output and avoid brake deviation; after replacement, exhaust the air in the pneumatic brake system and perform a road test to confirm normal braking and release performance.

Q1: How to confirm that this M16 front air chamber matches my SHACMAN F3000 truck?

A1: You can provide the vehicle VIN code, front brake bracket model or original air chamber OE number, and we will verify the compatibility of the M16 thread specification, push rod stroke and mounting dimensions with your brake system to ensure perfect fit.

Q2: What is the advantage of the M16 fine thread design of this air chamber?

A2: The M16×2 fine thread has higher assembly precision and larger contact area than coarse thread, with strong anti-loosening performance under vehicle chassis vibration, ensuring firm connection with the brake bracket without thread slipping, and easy to adjust the assembly position during installation.

Q3: Can samples be provided for performance testing?

A3: Yes, sample supply is supported. The sample fee can be fully deducted from the subsequent formal order, and the sample delivery cycle is 2-3 working days.

Q4: What are the common causes of air chamber air leakage and how to avoid it?

A4: The main causes are sealing ring aging, chamber body deformation and thread connection looseness. It is recommended to replace the air chamber in time when the sealing ring is aged, avoid violent collision during installation to prevent chamber body deformation, and tighten the M16 thread according to the specified torque to avoid looseness.

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