OKADA Hydraulic breakers (Mid.class)




This breaker (TOP210,TOP300) features unique patentedOKADA technology that takes advantage of theupper high pressure chamber reversion principle toutilize both
hydraulic power andcompressednitrogengas.
When the piston is in strike motion, the lower part of the piston is free of back pressure.The hydraulic power plus compressed nitrogen gas applied to the piston head is highly efficiently converted into impact power, producing unmatched impact power.
Model:TOP210





Advanced precision machining, sophisticated assembling processes, and strict quality control all work together to create a compact breaker body with fewer moving parts. The advantage is efficient and safe operation and economical total operating cost.

Breaker brackets are made of heavy gauge high tensile steel plates and are designed to afford maximum protection to the breaker body while allowing for heat dissipation. The advantage is a cooler-running breaker that offers easy maintenance access and less downtime.

Okada bushing designs, a special heat treatment process and individually lubricated bushings enhance the service life of the wear parts








TOP90 TOP100A TOP200 TOP205 TOP210
Energy class ftlb 2000 2500 3500 4000 4000
Working pressure range psi 2000-2620 2030-2620 2030-2620 2030-2600 2030-2620
Internal oil flow range GPM 18.5-29.1 21.2-30.4 31.7-42.3 26.5-34.4 31.7-42.3
Frequency range bpm 550-850 550-710 465-625 340-700 310-480
Approx. operating weight lbs 1450 2400 3700 4000 4150
Carrier machine weight range USton 7.7-13.2 11-21 18-24 20-30 20-30
Piping inner diameter (") 3/4 3/4 1 1 1
Circuit relief valve set at psi 2700 2700 2700 2700 3000
Carrier output flow range GPM 22-31 29-35 39.5-53 43-53 47-53


OKB316 OKB318 TOP300
Energy class ftlb 5000 7500 7500
Working pressure range psi 1850-2420 1850-2420 2030-2620
Internal oil flow range GPM 38.3-48.8 42.3-55.6 42.3-56.9
Frequency range bpm 360-700 320-600 280-420
Approx. operating weight lbs 5600 6400 6450
Carrier machine weight range USton 22-33 31-47 31-47
Piping inner diameter (") 1 1 1
Circuit relief valve set at psi 2700 2700 3000
Carrier output flow range GPM 47-63 63-72 63-72
OKB316, OKB318 and TOP205 have 2 speed feature.
Specifications are subject to change without prior notice








OKADA Hydraulic breakers (Large class)



These breakers are perfect for mounting onto very large crawler excavators.
The tremendous impact force of these units produces maximum results in quarries and
large scale trenching jobs



Unprecedented durability
The square-shaped main body is created using a special alloy and subjected to advanced heat treatment processing, making the hammer body extremely durable. In addition, OKB series hammers use fewer parts than competing brands of hydraulic breakers, so there is far less chance of problems developing. There are only three moving parts - the piston, the valve and the accumulator bladder. (There are only two moving parts in theTop200 and smaller models.)

Long life
New special alloy steels and an advanced heat treatment system enhance main component durability. By adding greasing points, both the shank bushing and front cap bushing are lubricated individually, resulting in longer service life.

Stringent quality control and exhaustive testing
Every step in 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.



TOP400 OKB330
Energy class ftlb 10000 15000
Working pressure range psi 2030-2620 1990-2630
Internal oil flow range GPM 74-92.6 74 -100
Frequency range bpm 320-400 260-340
Approx. operating weight lbs 9350 12000
Carrier machine weight range USton 38-53 50-
Piping inner diameter (") 1-1/4 1-1/4
Circuit relief valve set at psi 3000 2800
Carrier output flow range GPM 74-93 79-101
Specifications are subject to change without prior notice.