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Jet Series Hammers


Technical Description

GENERAL CARE


Before shutting down at the end of each shift, we recommend the following
procedures :
1. Flush Hammer with air/ water for a few minutes, then turn off water
    injection.
2. Flush Hammer with air/oil for a few minutes. This will coat the internal     Hammer parts preventing corrosion / rust.
3. Never leave the tool in a wet/ muddy hole. Pull back from bottom as
    far as necessary to prevent the Hammer sitting under water.
4. It is also good practice to pour at least half a litre of oil down the drill     at start up of a new shift.
5. If the Hammer is removed from the drill rig for any reason, it is wise     to pour a quantity of oil into it and block both ends, providing the     flushing as outlined in steps one and two above have been carried     out. If steps one and two have not been carried out the Hammer     should be stripped, cleaned and oiled before being stored.
     
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Component Name
Piston Case/ Barrel
Piston
Control Tube
Top Sub/ Back Head
Driver Sub/ Front Chuck
Air Dristributor
Guide Sleeve/ Assembly Bush
Bit Retainer Ring/ Bit Lock
Dart/ Bonded Check Valve
Retainer Pin/ Dowell Pin
Spring
Circlip
Bit Lock O Ring
Choke
O Ring/ Assembly Bush O Ring
Front Chuck Rubber Cap
Back Head Rubber Cap
H475JCR
HB475JCR
HP475JCR
HCT475JCR
HC475JCR
HFC475JCR
HAD475JCR
HAB475JCR
HBL475JCR
HBCV475JCR
HDP475JCR
HS475JCR
HCL475JCR
HOR475JCR
HBC475JCR
HABOR475JCR
HFCRC475JCR
HCRC475JCR
H60JCR
HB60JCR
HP60JCR
HCT60JCR
HC60JCR
HFC60JCR
HAD60JCR
HAB60JCR
HBL60JCR
HBCV60JCR
HDP60JCR
HS60JCR
HCL60JCR
HOR60JCR
HBC60JCR
HABOR60JCR
HFCRC60JCR
HCRC60JCR
H65JCR
HB65JCR
HP65JCR
HCT60JCR
HC65JCR
HFC65JCR
HAD60JCR
HAB65JCR
HBL65JCR
HBCV60JCR
HDP65JCR
HS60JCR
HCL65JCR
HOR60JCR
HBC60JCR
HABOR60JCR
HFCRC60JCR
HCRC60JCR

SPECIAL FEATURES

JCR SUPER JET HAMMERS

•  For use in hard rock application
•  Valve less DTH Hammer design
•  Reversible wear sleeve (Cylinder)
•  Less number of moving parts
•  Can work on low to high pressure radius
•  High rate of penetration while utilising less air
•  Excellent under water characteristics
 
SPECIFICATIONS
# Hammer Name Part Number Outside Dia (mm) Recomm Bit size (mm) Top Sub Thread (IN) Ham. Wt. Without Bit (kg.) Total Len without Bit (mm) Wrench Flat (mm) Working Pressure (Bar)
1 JCR 4 3/4 H475JCR 103.00 120.60 to 140.00 2-7/8 Reg Pin 40.00 960.0 74.00 7.5-21
2 JCR 60 H60JCR 140.00 152.40 to 216.00 2-7/8 Reg Pin 73.50 1005.0 90.00 90.00 10.5-24
3 JCR 65 H65JCR 148.00 165.10 to 228.60 2-7/8 Reg Pin 83.50 1005.0 90.00 10.5-24
 
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