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The HTH300 is valueless DTH Hammer designed for drilling 89mm - 102mm {3.5' - 4") dia. holes over wide range of operating air Pressures. It is especially suitable for water well drilling applications where great depth requirements demand less air usage with minimal performance loss. The HTH300 Hammer gives 25% increase in performance compared to conventional 3" hammers.

The HTH300 is supplied with a 23/8" API REG. pin Blackhead, as standard but other connections are available on request.

Description   Part Nos.
Complete Hammer HTH302
Back Head HTH306
Check Valve HTH320
Diverter HTH328
Compression Ring HTH329
Buffer Tube HTH331
Tube Holder HTH330
Control Tube HTH303
Piston HTH301
Wear Sleeve HTH332
Piston Retaining Ring HTH337
Bit Retainer HTH335
Front Chuck  HTH326
Chuck Release Washer HTHB300

Hammer Specifications

Diameter                                     79.0mm

Hole Range                                 89.0 mm-127.0mm

Bore                                          62.23 mm

Hammer Weight                           24.0 kg

Length Shoulder to Shoulder 953.0 mm

Length Shoulder to Bit Face           1033.0 mm

Standard API thread                     23/8”APIREG

Piston Diameter                           62.16 mm

Piston Weight                              5.1kg

Bit Shank Length                          170.0mm

Width of the Blackhead slot           76.2mm


Air Consumption
150  96 10.3 2.7
200 148 13.8 4.2
250 206 17.2 5.8
300 271 20.7 7.7
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