Okada Aiyon History

Okada Aiyon was founded with the launch of OKADA Rock Drill Co. in 1938 by Tatsuo Okada (pen name was Haku-Un) next to the current National Bunraku Theater. However, after that, as the war intensified, the business closed due to war damage. Eventually, Japan was defeated and after the war was a dark period called the black market era. Amid such confusion, in the latter half of 1945 our company started doing business with nothing more than a bag. We used to travel on bicycles around not only Osaka City but also the Amagasaki and Sakai areas.
An iconic event in Japan’s rapid growth was the 1970 World Exposition outside Osaka. Many Okada Aiyon units were used to prepare the exposition site in the Senri Hills. Around this time we imported hydraulic breakers for the first time in Japan. At the time, we never imagined that we would sell American machines in Japan. Even more so, it was inconceivable to us that we would go on to export many hydraulic breakers to the US and other countries.

OKADA Specification 

TMB70

TMB70
Working Weight: 222 Kg
Required Oil Flow: 167-242Lpm
Operating Pressure: 210 Bar
Overall width: 1,610 mm
Application Carry Weight: 18-27 ton
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TOP21H

TOP21H
TOP21H
Working Weight: 88 Kg
Required Oil Flow: 15 - 34Lpm
Operating Pressure: 90 - 120Bar
High speed mode: 550 - 1,000Bpm
Tool Shark Diameter: 45 mm
Application Carry Weight: 0.7-2.3ton
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TOP21LT

TOP21LT
Working Weight: 120Kg
Required Oil Flow: 19 - 34Lpm
Operating Pressure: 90 - 120Bar
High speed mode: 550 - 1,000 Bpm
Tool Shark Diameter: 45 mm
Application Carry Weight: 1-2.3 ton
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TOP31

TOP31
Working Weight: 120 Kg
Required Oil Flow: 26 – 49 Lpm
Operating Pressure: 100-140 Bar
High speed mode: 450-1000 Bpm
Tool Shark Diameter: 57 mm
Application Carry Weight: 1.5 - 4 ton
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TOP35B

TOP35B
TOP35B
Working Weight: 256 Kg
Required Oil Flow: 49 - 64Lpm
Operating Pressure: 110 - 165 Bar
High speed mode: 380 - 1,000Bpm
Tool Shark Diameter: 61 mm
Application Carry Weight: 2 - 4 ton
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TOP45B

TOP45B
Working Weight: 354 Kg
Required Oil Flow: 64 – 83 Lpm
Operating Pressure: 100 – 160 Bar
High speed mode: 800 - 1,100 Bpm
Tool Shark Diameter: 69 mm
Application Carry Weight: 4.5-8 ton
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TOP55B

TOP55B
Working Weight: 481 Kg
Required Oil Flow: 60 - 87 Lpm
Operating Pressure: 140 - 170 Bar
High speed mode: 400 - 1.100 Bpm
Tool Shark Diameter: 74 mm
Application Carry Weight: 4.5 - 8 ton
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TOP60B

TOP60B
TOP60B
Working Weight: 540 Kg
Required Oil Flow: 64 - 87 Lpm
Operating Pressure: 120 - 160 Bar
High speed mode: 730 - 970 Bpm
Tool Shark Diameter: 84 mm
Application Carry Weight: 5 - 9 ton
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TOP90

TOP90
Working Weight: 658 Kg
Required Oil Flow: 3 - 117 Lpm
Operating Pressure: 140 - 180 Bar
High speed mode: 550 - 850 Bpm
Tool Shark Diameter: 99 mm
Application Carry Weight: 7 - 12 ton
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TOP100A

TOP100A
Working Weight: 1.107 Kg
Required Oil Flow: 110 - 132 Lpm
Operating Pressure: 140 - 180 Bar
High speed mode: 550 - 710 Bpm
Tool Shark Diameter: 109 mm
Application Carry Weight: 10 - 18 ton
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 TOP150

TOP150
TOP150
Working Weight: 1.361 Kg
Required Oil Flow: 114 - 132 Lpm
Operating Pressure: 140 - 180 Bar
High speed mode: 600 - 750 Bpm
Tool Shark Diameter: 122 mm
Application Carry Weight: 13 - 19 ton
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TOP205J

TOP205J
Working Weight: 1.868 Kg
Required Oil Flow: 163 - 200 Lpm
Operating Pressure: 140 - 180 Bar
High speed (S)mode: 500 - 560 Bpm
Tool Shark Diameter: 135 mm
Application Carry Weight: 18 - 27 ton
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 TOP270

TOP270
Working Weight: 2.576 Kg
Required Oil Flow: 178 - 238 Lpm
Operating Pressure: 128 - 167 Bar
High speed (S)mode: 600 - 700 Bpm
Tool Shark Diameter: 140 mm
Application Carry Weight: 20 - 30 ton
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TOP300

TOP300
TOP300
Working Weight: 3.016 Kg
Required Oil Flow: 238 - 273 Lpm
Operating Pressure: 140 - 180 Bar
High speed mode: 280 - 420 Bpm
Tool Shark Diameter: 155 mm
Application Carry Weight: 28 - 52 ton
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TOP400

TOP400
Working Weight: 4.240 Kg
Required Oil Flow: 280 - 352 Lpm
Operating Pressure: 140 -180 Bar
High speed mode: 320 - 400 Bpm
Tool Shark Diameter: 170 mm
Application Carry Weight: 45 - 80 ton
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TOP800

TOP800
Working Weight: 5.601 Kg
Required Oil Flow: 299 - 382 Lpm
Operating Pressure: 137 - 180 Bar
High speed mode: 260 - 340 Bpm
Tool Shark Diameter: 188 mm
Application Carry Weight: 50 - 100 ton
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