Tsubaki is proud to offer a market leading portfolio of Engineering Class Drive Chains. This unique and encompassing collection of premium designs has been continuously improved and perfected over the last century.
Manufactured in Sandusky, Ohio since 1917, this cornerstone product is widely recognized around the world for its superior quality and workmanship. When it comes to efficient power transfer, Tsubaki Drive Chain is second to none.

PINS
  • Premium alloy steel.
  • Heat treated for superior strength and toughness.
    • Core – Through hardened for superior impact resistance.
    • Surface – Induction hardened for extended wear resistance.
  • Precision manufactured to maintain high interference fit with sidebars.
    • Prevents pin rotation and subsequent sidebar wear.
BUSHINGS
  • Premium alloy steel.
  • Heat treated for superior strength.
    • Surface – Case hardened for ultimate/extended wear resistance.
  • Precision manufactured to maintain smooth bearing surfaces and high interference fit with sidebars.
    • Favorable residual stresses resist fatigue and allow for extended life.
SIDEBARS
  • Premium alloy steel.
  • Heat treated for superior strength, toughness and fatigue resistance.
  • Proprietary manufacturing processes ensure consistent hole quality and precise pitch control.
ROLLERS
  • Premium alloy steel.
  • Through hardened for superior strength, toughness and the ability to withstand high shock loads.
TYPICAL APPLICATIONS
  • Mechanical Drives
  • Drum Drives
  • Draw Bench
  • Crawler Crane Drives
COMMON INDUSTRIES
ASPHALT
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INDUSTRIALS MINERALS
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Tsubaki Part Number

Chain Number

Alternate Part Number

Sidebar Style

Pitch

Inside Width - A

Roller Diameter - B

Pin Diameter - C

Sidebar Height - D

Sidebar Thickness - E

Pin Head to CL - F

Pin End to CL -G

Overall Width - H

Average Ultimate Strength

Max Working Load

N/A N/A RO3140 N/A 2 N/A 1.750 in N/A 1.00 in N/A 1.00 in N/A 0.55 in N/A 1.66 in N/A 0.25 in N/A 1.19 in N/A 1.41 in N/A 2.59 in N/A 60000 lb N/A 2900 lb
N/A US2065 N/A RO1613AK N/A 1 N/A 2.000 in N/A 1.27 in N/A 1.13 in N/A 0.59 in N/A 1.63 in N/A 0.31 in N/A 1.44 in N/A 1.69 in N/A 3.13 in N/A 70000 lb N/A 3900 lb
N/A N/A RO3180 N/A 2 N/A 2.250 in N/A 1.44 in N/A 1.41 in N/A 0.69 in N/A 2.09 in N/A 0.28 in N/A 1.47 in N/A 1.74 in N/A 3.21 in N/A 86000 lb N/A 4800 lb
N/A N/A RO25H N/A 1 N/A 2.500 in N/A 1.50 in N/A 1.25 in N/A 0.65 in N/A 1.63 in N/A 0.38 in N/A 1.72 in N/A 1.95 in N/A 3.67 in N/A 84000 lb N/A 5100 lb
N/A N/A RO1625 N/A 2 N/A 2.500 in N/A 1.53 in N/A 1.56 in N/A 0.78 in N/A 2.37 in N/A 0.31 in N/A 1.60 in N/A 1.91 in N/A 3.51 in N/A 96000 lb N/A 5900 lb
N/A 520RX N/A N/A 1 N/A 2.563 in N/A 1.06 in N/A 1.13 in N/A 0.50 in N/A 1.25 in N/A 0.25 in N/A 1.22 in N/A 1.44 in N/A 2.66 in N/A 31000 lb N/A 2700 lb
N/A US882 N/A RO588 N/A 1 N/A 2.609 in N/A 1.13 in N/A 0.88 in N/A 0.44 in N/A 1.13 in N/A 0.25 in N/A 1.20 in N/A 1.42 in N/A 2.63 in N/A 30000 lb N/A 2500 lb
N/A 1184RX N/A N/A 1 N/A 2.640 in N/A 1.06 in N/A 1.13 in N/A 0.50 in N/A 1.50 in N/A 0.25 in N/A 1.22 in N/A 1.44 in N/A 2.63 in N/A 40000 lb N/A 2700 lb
N/A US3011 N/A RO568N N/A 1 N/A 3.067 in N/A 1.56 in N/A 1.63 in N/A 0.75 in N/A 2.25 in N/A 0.38 in N/A 1.75 in N/A 2.13 in N/A 3.88 in N/A 116000 lb N/A 6100 lb
N/A US1030 N/A N/A 1 N/A 3.075 in N/A 1.50 in N/A 1.25 in N/A 0.63 in N/A 1.50 in N/A 0.31 in N/A 1.56 in N/A 1.85 in N/A 3.41 in N/A 31000 lb N/A 4650 lb
N/A US1031 N/A RO3 N/A 1 N/A 3.075 in N/A 1.50 in N/A 1.25 in N/A 0.63 in N/A 1.50 in N/A 0.31 in N/A 1.56 in N/A 1.84 in N/A 3.41 in N/A 59000 lb N/A 4650 lb
N/A US3075 N/A RO3H N/A 1 N/A 3.075 in N/A 1.50 in N/A 1.25 in N/A 0.65 in N/A 1.75 in N/A 0.38 in N/A 1.72 in N/A 1.95 in N/A 3.67 in N/A 78000 lb N/A 5100 lb
N/A N/A RO3125 N/A 1 N/A 3.125 in N/A 1.56 in N/A 1.62 in N/A 0.88 in N/A 2.25 in N/A 0.38 in N/A 1.75 in N/A 2.12 in N/A 3.87 in N/A 127000 lb N/A 7100 lb
N/A N/A RO3125H N/A 1 N/A 3.125 in N/A 1.63 in N/A 1.63 in N/A 0.88 in N/A 2.25 in N/A 0.50 in N/A 2.09 in N/A 2.44 in N/A 4.53 in N/A 153000 lb N/A 8000 lb
N/A US3514 N/A RO1616 N/A 1 N/A 3.500 in N/A 1.50 in N/A 1.75 in N/A 0.88 in N/A 2.25 in N/A 0.50 in N/A 2.03 in N/A 2.38 in N/A 4.41 in N/A 158000 lb N/A 7700 lb
N/A N/A RO1338 N/A 1 N/A 3.625 in N/A 1.67 in N/A 2.13 in N/A 0.94 in N/A 2.38 in N/A 0.56 in N/A 2.25 in N/A 2.63 in N/A 4.88 in N/A 181000 lb N/A 9200 lb
N/A N/A RO1644A N/A 1 N/A 3.750 in N/A 1.50 in N/A 1.75 in N/A 0.94 in N/A 2.38 in N/A 0.56 in N/A 2.17 in N/A 2.54 in N/A 4.71 in N/A 181000 lb N/A 8600 lb
N/A N/A RO3924T N/A 1 N/A 3.906 in N/A 1.51 in N/A 2.25 in N/A 1.19 in N/A 3.38 in N/A 0.56 in N/A 2.16 in N/A 2.60 in N/A 4.76 in N/A 279000 lb N/A 11000 lb
N/A N/A RO1664A N/A 1 N/A 4.000 in N/A 2.20 in N/A 2.25 in N/A 1.19 in N/A 3.38 in N/A 0.56 in N/A 2.52 in N/A 2.93 in N/A 5.45 in N/A 269000 lb N/A 14000 lb
N/A N/A RO5 N/A 1 N/A 4.063 in N/A 1.52 in N/A 1.75 in N/A 0.88 in N/A 2.25 in N/A 0.50 in N/A 2.04 in N/A 2.37 in N/A 4.41 in N/A 152000 lb N/A 7700 lb
N/A US1241 N/A N/A 1 N/A 4.063 in N/A 1.94 in N/A 1.75 in N/A 0.88 in N/A 2.25 in N/A 0.50 in N/A 2.25 in N/A 2.59 in N/A 4.81 in N/A 139000 lb N/A 9000 lb
N/A US1242 N/A RO4 N/A 1 N/A 4.063 in N/A 1.94 in N/A 1.75 in N/A 0.88 in N/A 2.25 in N/A 0.50 in N/A 2.25 in N/A 2.56 in N/A 4.81 in N/A 158000 lb N/A 9000 lb
N/A N/A RO4HF N/A 1 N/A 4.063 in N/A 1.94 in N/A 1.75 in N/A 0.94 in N/A 2.38 in N/A 0.63 in N/A 2.52 in N/A 2.89 in N/A 5.40 in N/A 181000 lb N/A 10500 lb
N/A US1245 N/A RO1245 N/A 1 N/A 4.073 in N/A 1.94 in N/A 1.78 in N/A 0.94 in N/A 2.38 in N/A 0.56 in N/A 2.39 in N/A 2.37 in N/A 5.13 in N/A 181000 lb N/A 10000 lb
N/A US4121 N/A RO1343 N/A 1 N/A 4.090 in N/A 1.94 in N/A 1.88 in N/A 1.10 in N/A 2.75 in N/A 0.56 in N/A 2.39 in N/A 2.76 in N/A 5.15 in N/A 235000 lb N/A 11700 lb
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