Round Bar

Heavy Duty Excavator Cylinder Rod – Hard Chrome Plated

Material

1045414051205140

Tolerance

h9h11+/-0.05mm

Surface Finish

ground_polished, chrome_plated

Minimum Order

1 tons - Contact us for smaller quantities

Specifications

Parameter Details
Product Name Cold Drawn Steel Bar / Cold Drawn Special Shaped Steel Bar
Material / Grade Carbon Steel: A36, 1018, 1020, 1045 Alloy Steel: 4140, 4340, 5120, 5140, 20CrMnTi Stainless Steel: 304, 316, 430, 17-4PH
Standard GB / ASTM A108 / JIS
Shape Round Bar, Square Bar, Flat Bar, Rectangular Bar, Hexagonal Bar, Special Shaped Bar (Customized)
Tolerance ±0.05mm (High Precision)
Surface Finish Bright / Polished/Chromed
Length Standard: 3m ~ 6m Custom Length Available
Sample Free Samples Available (According to Customer Requirements)
Customization Fully Customizable (Special Shapes & Sizes as per Drawings)

Size

Shape Size Range Notes
Round Bar
Diameter: 4mm ~ 400mm
Most common shape
Square Bar
4×4mm ~ 90×90mm
High precision corners
Flat Bar
Thickness: 3~60mm × Width: 4~110mm
Excellent for structural & parts use
Hexagonal Bar
S4mm ~ S101mm
Ideal for fasteners & tools
Special Shaped Bar
Fully Customized
According to customer drawings

Material & Application

Material Key Features Common Applications
A36 / 1018 / 1020 Good weldability, general purpos Construction, machinery parts
1045 Medium carbon, high strength Shafts, gears, bolts
4140 / 4340 High strength, wear resistant Automotive, heavy machinery
SCM440 / 42CrMo High strength + good hardenability Excavator rods, heavy-duty hydraulic cylinders
5120 / 5140 Good hardenability Gears, shafts
20CrMnTi Excellent carburizing performance Automotive gears, transmission parts
304 / 316 Excellent corrosion resistance Food machinery, chemical equipment, marine applications
430 Good formability & magnetic Decorative, automotive trim
630/17-4PH High strength + corrosion resistance Aerospace, medical, high-end machinery
CK45 Best cost-performance ratio, excellent machinability, high surface finish after chrome plating Standard excavator rods, hydraulic cylinder rods
SCM440 Higher strength, superior wear resistance, ideal for high-load conditions Heavy-duty excavator rods, large hydraulic cylinders

Production Process

Process Flow 1

Peeling → Phosphating → Annealing → Phosphating and Soapingcold → drawing → polishing and straightening → cutting

Other Products

Other Products

Other Products

Special Type Bars

Special Type Bars

Custom Steel Bar

Custom Steel Bar

Product Details

Heavy Duty Excavator Cylinder Rod – Hard Chrome Plated
Premium Quality Piston Rods for Excavator Boom, Arm & Bucket Cylinders

YaDa Metal manufactures high-performance excavator cylinder rods specifically engineered for the demanding conditions of construction and mining equipment. Made from premium SCM440 (42CrMo) alloy steel and finished with thick hard chrome plating, our rods deliver exceptional strength, wear resistance, and corrosion protection even in the harshest environments. Trusted by excavator manufacturers and hydraulic cylinder repair companies worldwide.

Key Features

High Strength Base Material — SCM440 (42CrMo) alloy steel for heavy loads
Thick Hard Chrome Plating — 30–50μm chrome layer for superior wear and corrosion resistance
High Surface Hardness — HV 900–1000
Ultra Smooth Surface — Ra ≤ 0.2μm, reduces friction and extends seal life
Excellent Straightness — ≤ 0.2mm/m for smooth cylinder operation
Tight Tolerance — ±0.05mm
Custom Made — Available for 20–200 ton excavators (different models)

Specifications

Parameter Details
Product Name Excavator Hydraulic Cylinder Rod
Base Material SCM440 (42CrMo)
Diameter Range 40mm – 180mm (common sizes in stock)
Length Range Up to 6000mm
Chrome Thickness 30–50μm
Surface Hardness HV 900–1000
Surface Roughness Ra ≤ 0.2μm
Straightness ≤ 0.2mm/m
Salt Spray Resistance ≥ 96 hours
Working Pressure Suitable for high-pressure hydraulic systems

Compatible Excavator Brands & Models

Our excavator cylinder rods are widely used in:
Komatsu (PC200, PC300, PC400, PC600, etc.)
Caterpillar (CAT 320, 330, 336, 349, etc.)
Hitachi (ZX200, ZX300, ZX350, ZX470, etc.)
Hyundai (R210, R290, R450, etc.)
Doosan, Sany, XCMG, LiuGong and other Chinese brands

Applications

Excavator boom cylinders
Excavator arm cylinders
Excavator bucket cylinders
Mining excavators and heavy-duty equipment
Hydraulic breaker and demolition attachments

Why Choose YaDa Excavator Cylinder Rods?

Engineered for Harsh Conditions — Dust, mud, high impact, and heavy load
Full In-House Production — From steel bar to finished chrome plated rod
Strict Quality Testing — 100% inspection + salt spray + hardness testing
Fast Delivery — Popular sizes in stock, custom orders within 15–25 days
Competitive Pricing — Factory direct supply

Get Your Custom Quote Today

We offer free samples and technical support for excavator cylinder rod orders.
Contact us now for the best price and fast delivery!
Email: [email protected]
Tel: +86 13920216030

Related Products

Custom Cold Drawn Steel Profile – Made to Your Drawing

Custom Cold Drawn Steel Profile – Made to Your Drawing

Precision Custom Shaped Steel Bars According to Your Design YaDa Metal specializes…

Learn More →
HHigh Strength Alloy Steel Cold Drawn Bar (4140 / SCM440)

HHigh Strength Alloy Steel Cold Drawn Bar (4140 / SCM440)

High Strength Alloy Steel Cold Drawn Bar (4140 / SCM440)Premium High-Strength Cold…

Learn More →
High Precision Ground Steel Bar – Centerless Ground

High Precision Ground Steel Bar – Centerless Ground

High Precision Ground Steel Bar – Centerless GroundUltra-Precision Steel Bars with Tolerance…

Learn More →

Related Applications

Applications at Automotive parts

Cold Drawn Steel Bars for Automotive Components Precision & Performance for Demanding Automotive Applications Our…

Need Custom Specifications?

Contact our engineering team for customized solutions, technical specifications, and volume pricing.

!
Chat with us on WhatsApp