BR1 & BR2VALVED DTH HAMMERTechnical Brochure

Certificate Number 2446/00ISO9001

Weight (less bit)Length (less bit)Outside dia.Piston weightStroke

17.6Ibs27.9"2.0"2.2Ibs3.0”

8kgs709mm51mm1kg76mm

28.6Ibs33"2.44"4.0Ibs4.0”

13kgs838mm62mm1.8kg101mm

BR1English Metric

COMPONENT PARTS

Bulroc Valved Type HammerBR1 (60-64mm) BR2 (70-80mm) dia hole

AIR CONSUMPTIONHAMMER SPECIFICATIONSPSI Bar Hammer CFM M3/minBR2

English Metric

BUTTON BITS

6064707680

BBS011FF060BBS011FF064

BBS012FF070BBS012FF076BBS012FF080

Bit Dia. BR1 BR2

3

11

16

17

99

88

7

5

6

1

3

18

1212

15

14

111

4

2

Ref.

123456789

101112131415161718

Description

WearsleeveInner CylinderBearingPistonAir Metering PlugBevelled Valve HousingCentraliserDisc ValveValve ChestBackheadBackhead ‘O’ RingBit Retaining RingBackhead SpacerChuckChuck Sealing RingCheck ValveCheck Valve SpringSplit Spacer

Complete Hammer

Part No BR1

HSB1S00HSB1S01HSB1S02HSB1S03IPP04HSB1S04HSB1S05HSB1S06HSB1S07HSB1S3810FIPBOR06IPBR03IPBS05HSB1S35STIPCS05IPCV06IPCVS05IPSS07

BR1S01

Part No BR2

HSB2S00HSB2S01HSB2S02HSB2S03IPP04HSB2S04HSB2S05HSB2S06HSB2S07HSB2S3811FHSB2S14HSB2S37STHSB2S12HSB2S35STHSB2S13IPRCV01IPRCVS01HSB2S36ST

BR2S01

101010

100

150

200

250

7

10.3

13.8

17.2

BR1BR2BR1BR2BR1BR2BR1BR2

17.7926.6532.6948.9650.3275.3870.33105.35

0.500.750.931.391.432.131.992.98

Manufacturers of Rock Drilling EquipmentTurnoaks Business Park, Burley Close, Chesterfield ,Derbyshire S40 2UBTel: +44(0) 1246 544700 Fax: +44(0) 1246 544701E-mail: info@bulroc.com Website bulroc.com BROBR12A 02/9/14

13The BR1 and BR2 are both valved type hammers designedfor high performance at low operating air pressures.

Simplicity of design, ease of service and low air consumptionare all factors which combine to make these hammers robustand reliable drilling tools. Both hammers are available asstandard with box backheads, RD40 for the BR1 and RD50for the BR2. However alternative backhead options are availableon request.

The BR1 and BR2 hammers both incorporate a positive fittingcheck valve to guard against the ingress of ground water debriswhen the air is shut off.