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Heavy-Duty Duplex Roller Chains for High-Load Systems

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Heavy-duty roller chain is a chain specially designed for transmission in high-load environments, which has a stronger load capacity and higher durability to meet the high requirements of mechanical transmission in heavy industry.
  • AH series

  • PLW or Made to order

  • 7315119000

  • Carbon Steel

  • for Free

  • Plastic Bag+Carton Box+Plywood Case

  • Roller Chain

  • Oil Blooming

  • Oil Resistant

  • Standard

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Heavy-Duty Duplex Roller Chains for High-Load Systems


Overview


The Heavy-Duty Duplex Roller Chains are designed for applications demanding double the load capacity of standard single-row chains without compromising speed or efficiency. Featuring two parallel rows of rollers and bushings connected by a common pin, these chains offer enhanced power transmission in compact spaces, making them ideal for heavy machinery and high-torque drives.


Features


Dual-Row Design: Doubles tensile strength (up to 160kN) while maintaining the same pitch as single-row chains, reducing drive system size by 30%.

Enhanced Stability: Wide inner plates and precision-ground pins minimize lateral movement, ensuring smooth operation at speeds up to 15m/s.

Corrosion Resistance: Optional zinc-nickel plating (8-12μm thickness) provides 500+ hours of salt spray resistance (ASTM B117), suitable for marine and offshore applications.

Lubrication Optimization: Deep roller grooves retain grease for longer intervals, reducing maintenance frequency by 40% compared to standard chains.

ANSI/ISO Compatibility: Meets ANSI B29.3 and ISO 1275 standards, ensuring seamless integration with international sprocket systems.


Application


Construction Machinery: Powers excavator tracks, crane hoists, and compactor drives in rugged job sites.

Mining Equipment: Used in conveyor belts, rock crushers, and ore processing machinery requiring reliable high-load transmission.

Industrial Engines: Drives auxiliary systems in diesel generators, steam turbines, and large motors with consistent power transfer.

Automotive Manufacturing: Supports heavy-duty assembly line drives and robotic welding stations with minimal downtime.


Why Choose Us


Load Customization: Available in triple/quadruple row configurations for specialized ultra-high-load applications (up to 300kN tensile strength).

Advanced Testing: Dynamic load testing at 1.5x rated capacity for 1,000 hours to ensure fatigue resistance.

Eco-Friendly Coatings: Offer RoHS-compliant anti-corrosion treatments without heavy metals for sustainable industrial solutions.

Global Service Network: 5 regional warehouses in North America, Europe, and APAC for rapid delivery and local technical support.


China Professional ISO DIN ANSI Zinc-Plated Industrial Transmission Roller Chain for Transportation with High Quality

Roller Chains

DIN/ISO
CHAIN NO.
ANSI
CHAIN NO.
Pitch Roller
diameter
Width
between
inner plates
Pin
diameter
Pin length Inner
plate
depth
Plate
thickness
Transverse
pitch
Ultimate
tensile
strength
Average
tensile
strength
Weight
per meter
DIN/ISO
Cadena
No
ANSI
Cadena
No
Paso Diámetro
rodillo
Ancho
interior
Diámetro
pasador
Longitud pasador Altura
placas
Ancho
placas
Paso
transversal
Resis.rotura Resis.
media
tracción
Peso
por
metro
P d1
max
b1
min
d2
max
L
max
Lc
max
h2
max
T
max
Pt Q
min
Qo q
mm mm mm mm mm mm mm mm mm kN/LB KN kg/m

*35H-1 9.525 5.08 4.77 3.58 13.3 14.3 9.00 1.50 - 7.9/1795 10.8 0.41
08AH-1 40H-1 12.700 7.95 7.85 3.96 18.8 19.9 12.00 2.03 - 14.1/3205 19.1 0.82
10AH-1 50H-1 15.875 10.16 9.40 5.08 22.1 23.4 15.09 2.42 - 22.2/5045 30.2 1.25
12AH-1 60H-1 19.050 11.91 12.57 5.94 29.2 31.0 18.00 3.25
31.8/7227 42.7 1.87
16AH-1 80H-1 25.400 15.88 15.75 7.92 36.2 37.7 24.00 4.00
56.7/12886 71.4 3.10
20AH-1 100H-1 31.750 19.05 18.90 9.53 43.6 46.9 30.00 4.80
88.5/20114 112.4 4.52
24AH-1 120H-1 38.100 22.23 25.22 11.10 53.5 57.5 35.70 5.60
127.0/28864 160.9 6.60
28AH-1 140H-1 44.450 25.40 25.22 12.70 57.6 62.2 41.00 6.40
172.4/39182 217.3 8.30
32AH-1 160H-1 50.800 28.58 31.55 14.27 68.2 73.0 47.80 7.20
226.8/51545 285.8 10.30
36AH-1 180H-1 57.150 35.71 35.48 17.46 75.9 81.6 53.60 8.00
281.0/63863 341.8 14.83
40AH-1 200H-1 63.500 39.68 37.85 19.85 86.6 93.5 60.00 9.50 - 353.8/80409 444.5 19.16
48AH-1 240H-1 76.200 47.63 47.35 23.81 109.6 115.9 72.30 12.70
510.3/115977 622.5 30.4
12AH-2 60H-2 19.050 11.91 12.57 5.94 55.3 57.1 18.00 3.25 26.11 63.6/14455 84.5 3.71
16AH-2 80H-2 25.400 15.88 15.75 7.92 68.8 70.3 24.00 4.00 32.59 113.4/25773 145.3 6.15
20AH-2 100H-2 31.750 19.05 18.90 9.53 82.7 86.0 30.00 4.80 39.09 177.0/40227 225.9 9.03
24AH-2 120H-2 38.100 22.23 25.22 11.10 102.4 106.4 35.70 5.60 48.87 254.0/57727 322.7 13.13
28AH-2 140H-2 44.450 25.40 25.22 12.70 109.8 114.4 41.00 6.40 52.20 344.8/78364 437.7 16.60
32AH-2 160H-2 50.800 28.58 31.55 14.27 130.1 134.9 47.80 7.20 61.90 453.6/103091 571.6 20.20
40AH-2 200H-2 63.500 39.68 37.85 19.85 164.9 171.8 60.00 9.50 78.31 707.6/160818 894.9 38.11
12AH-3 60H-3 19.050 11.91 12.57 5.94 81.4 83.2 18.00 3.25 26.11 95.4/21682 113.9 5.54
16AH-3 80H-3 25.400 15.88 15.75 7.92 101.4 102.9 24.00 4.00 32.59 170.1/38659 203.5 9.42
20AH-3 100H-3 31.750 19.05 18.90 9.53 121.8 125.1 30.00 4.80 39.09 265.5/60341 314.8 12.96
24AH-3 120H-3 38.100 22.23 25.22 11.10 151.2 155.2 35.70 5.60 48.87 381.0/86591 444.7 19.64
28AH-3 140H-3 44.450 25.40 25.22 12.70 162.0 166.6 41.00 6.40 52.20 517.2/117545 598.4 24.90
32AH-3 160H-3 50.800 28.58 31.55 14.27 192.0 196.8 47.80 7.20 61.90 680.4/154636 787.3 30.10
40AH-3 200H-3 63.500 39.68 37.85 19.85 243.2 250.1 60.00 9.50 78.31 1061.4/241227 1228.2 57.06


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