MS/AT SERIES
FULL-HYDRAULIC HAMMER

OVERVIEW

Fully hydraulic operational mechanism of MS/AT breakers ensure maximum and constant blow energy at every hitting and protect carrier pumps from hydraulic pressure spikes.

AT breakers, the premium products of MSB, are designed for a longer life based on their unique structure.

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SPECIFICATIONS

METRIC
ItemUnitMS
200
MS
220
MS
250
MS
255
MS
300
MS
400
MS
460
MS
520
MS
550
MS
600
MS
700
MS
30AT
MS
35AT
MS
45AT
MS
55AT
MS
75AT
Min Carrier Weightt23335710141822252830405070
Max Carrier Weightt67881012161825283232455575100
Working Weight (Non-silent Type)kg285310410355
(Backhoe)
470670830
Working Weight (Silent Type)kg325430490665890120015001734225024402950375055007500
Relief Pressurebar160160160160160160160170170170180180180180180190
Max Operating Pressurebar130130130130130140140140140140150150150150150160
Min Operating Pressurebar110110110110110120120120120120130130130130130140
Max Oil Flowl/min509085858590100100150150200200220240305400
Min Oil Flowl/min4040606060707080110130170170190210250300
Max Impact Ratebpm1000120010001000900700650500500500500450450400400400
Tool Diametermm637075758595100110120130140150165175180205
IMPERIAL
ItemUnitMS
200
MS
220
MS
250
MS
255
MS
300
MS
400
MS
460
MS
520
MS
550
MS
600
MS
700
MS
30AT
MS
35AT
MS
45AT
MS
55AT
MS
75AT
Min Carrier Weightlb440066006600660011000154002200030800396004850055100617006610088100110200154300
Max Carrier Weightlb13200154001760017600220002640035200396005510061700705007050099200121200165300220400
Working Weight (Non-silent Type)lb630685905785
(Backhoe)
104014801830
Working Weight (Silent Type)lb7209501080146519652645330638224960538035042671212516535
Relief Pressurepsi2320232023202320232023202320246524652465261026102610261026102756
Max Operating Pressurepsi1885188518851885188520302030203020302030217521752175217521752320
Min Operating Pressurepsi1595159515951595159517401740174017401740188518851885188518852030
Max Oil Flowg/min132423232324262639395252586380105
Min Oil Flowg/min10101515151818212934444450556679
Max Impact Ratebpm1000120010001000900700650500500500500450450400400400
Tool Diameterin2.482.752.952.953.343.743.934.334.725.115.515.916.56.897.098.07