TOP > Products > Okada Hydraulic Breakers Stringent quality control and exhaustive testing Every step of production, from material selection and machining to hardening and final assembly, is controlled by an exhaustive quality control system. To ensure the absolute best quality possible, each unit is fully tested in a specially equipped room dedicated to performance inspection. Long life New special alloy steels and an advanced heat treatment system enhance main component durability. Medium and large class breakers are equipped with a threaded port for attaching an automatic lubrication system. Unprecedented durability The square-shaped main body is created using special alloy and subjected to advanced heat treatment processing, making the hammer body extremely durable. In addition, Okada hammers use fewer parts than competing brands of hydraulic breakers, so there is far less chance of problems developing. Light class (TOP25, 30, 35, 40, 45B and 60B) Okada light class hammers are suitable for mounting onto mini-excavators, skid-steer loaders, and tractor loader backhoes. Typical uses include all types of demolition work, excavation, trenching work and more. Specifications TOP25 TOP30 TOP35 TOP40 TOP45B TOP60B Operating pressure MPa 8-15 12-16 12-16 12-16 12-16 12-16 Oil flow required L/min 18-38 24-35 35-55 31-46 65-81 48-80 Blow number bpm 730-1350 850-1100 1000-1250 600-910 800-1100 730-970 Back cap N2 gas pressure MPa 0.2-0.3 0.5-0.6 0.8-1.0 1.0-1.2 1.0-1.2 1.1-1.2 Built in accumulator gas pressure MPa - - - - - - Tool diameter mm 50 61 61 68 68 85 Tool length mm 500 550 550 700 700 900 Operating weight kg 154 224 224 293 325 457 Overall length (without bracket) mm 1032 1206 1206 1362 1362 1570 Piping diameter (minimum I.D.) mm 13 13 13 13 13 13 Circuit relief valve set pressure MPa 17.5 17.5 17.5 17.5 17.5 19 Carrier machine weight range Tons 1.5 - 3.5 2.0 - 4.0 2.0 - 4.0 4.0 - 5.5 4.0 - 7.0 5.5 - 9 The operating weight varies depending on the type of bracket and the base machine. Performance data varies depending on the base machine. The above specifications are subject to change without notice. Medium class (TOP90, 100A, 200, 205 and 250) The Okada line of five breakers for 10-27 ton class excavators provide a variety of specifications designed to match up well with a broad range of customer need. Specifications TOP90 TOP100A TOP200 TOP205 TOP250 Operating pressure MPa 13.7-18 14-18 14-18 14-18 14-18 Oil flow required L/min 70-110 80-115 120-160 100-130 120-160 Blow number bpm 550-850 550-710 465-625 340-700 310-480 Back cap N2 gas pressure MPa 0.7-0.9 0.5-1.1 0.5-1.0 1.9-3.0 0.3-0.6 Built in accumulator gas pressure MPa - - - 5.9 5.9 Tool diameter mm 98 110 125 135 135 Tool length mm 925 1000 1200 1200 1200 Operating weight kg 665 1070 1640 1761 1850 Overall length (without bracket) mm 1732 1890 2205 2108 2317 Piping diameter (minimum I.D.) mm 19 19 25 25 25 Circuit relief valve set pressure MPa 19 19 19 19 21 Carrier machine weight range Tons 7 - 12 10 - 19 14 - 22 18 - 27 18 - 27 The operating weight varies depending on the type of bracket and the base machine. Performance data varies depending on the base machine. The above specifications are subject to change without notice. Heavy class (TOP300, 400 and 800) These breakers are perfect for mounting onto very large crawler excavators. The tremendous impact force of these units produces maximum results in quarries and for large scale trenching jobs. Specifications TOP300 TOP400 TOP800 Operating pressure MPa 14-18 14-18 15-18 Oil flow required L/min 160-215 220-270 280-380 Blow number bpm 280-420 270-350 260-340 Back cap N2 gas pressure MPa 0.3-0.4 0.3 0.5 Built in accumulator gas pressure MPa 5.9 4.4 4.4 Tool diameter mm 155 169 186 Tool length mm 1400 1580 1600 Operating weight kg 2925 4230 5600 Overall length (without bracket) mm 2727 3063 3480 Piping diameter (minimum I.D.) mm 25 32 32 Circuit relief valve set pressure MPa 21 20 20 Carrier machine weight range Tons 28 - 43 38+ 50+ The operating weight varies depending on the type of bracket and the base machine. Performance data varies depending on the base machine. The above specifications are subject to change without notice.