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The HTH400 is valueless DTH Hammer designed for drilling 105mm - 140mm (4.5 – 5.5") dia. Holes over wide range of operating air pressures. HTH400 gives upto 20% increase in performance Achieved through improved hammer cycle and greater blow energy output. The hammer can be used for wide range of applications The HTH400 is supplied with a 23/8" API REG. pin Blackhead, as standard but other connections are available on request.

Complete Hammer

Back Head                                HTH402

Check Valve                              HTH404

Diverter                                     HTH412

Buffer Tube                                HTH414

Compression Ring                      HTH413

Tube Holder                               HTH409

Control Tube                              HTH406

Piston                                       HTH403

Wear Sleeve                              HTH401

Piston Release Ring                   HTH408

Bit Retainer                                HTH410

Chuck Release Washer               HTH407

Front Chuck                                HTH411

Bit                                              HTHB400


Hammer Specification

Diameter                                    95.0 mm

Hole Range                                105.0 mm -140.0 mm

Bore                                          76.19 mm

Hammer Weight                         75.0 kg

Length Shoulder to Shoulder 1065.0 mm

Length Shoulder to Bit Face        1145.0mm

Standard API thread                   23/8" API REG

Piston Diameter                         76.13 mm

Piston Weight                            8.3kg

Bit Shank Length                        208.0 mm

Width of the Back head slot         76.20

Adaptable Bit Range                    DHD 340A


Air Consumption

Psi      CFM    BAR     Cu. Mtr/Min

150     150     10.3    4.2

200     232     13.8    6.5

250     325     17.2    9.2

300     427     20.7    12.1
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