Geonex GR 15

Geonex DTH-drilling rotary heads

Geonex GR 15 - Geonex 3 Geonex GR 15 - Geonex 2 Geonex GR 15 - Geonex 1 Geonex GR 15 - Geonex Geonex GR 15 - Geonex

Geonex Rotary Heads are engineered for DTH-Drilling. Design is compact and strong engineered for both horizontal and vertical drilling. Rotary head can be mounted straight to feed carriage or as an option, there is also possibility for tilt function with cuttings collector. Speed switching valve option and different motor sizes also enables drilling of large diameter range. Rotary head has in-built air swivel with large hole through.

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Applications for Geonex GR 15

  • HZR400 horizontal drilling rig

    The GR15 rotary head is compatible with the HZR400 horizontal drilling rig.

  • Vertical drilling and micro piling rigs

    The rotary head is engineered for both horizontal and vertical drilling applications.

  • Anchoring and special drilling rigs

    The GR15 can be attached to a variety of special drilling rigs from different brands.

Technical information

Geonex GR 15

Weight kg (lb)200(440)
Length (with out threads adapter) mm (ft in)363 (1’ 3”)
Width mm (ft in)400 (1’ 4”)
Height mm (ft in)370 (1’ 3”)
Thread connection (can be specified according to customer needs)Api Reg 2 3/8”F, Api Reg 3 1/2”F, Api Reg 4 1/2”F
Max oil flow lpm (gpm)270 (71)
Max pressure Bar (psi)250 (3625)
Hydraulic motor size cm3/r (cid)min. 200 (12) max. 400 (24)
Max rotation torque, slow gear Nm (ftlb)min. 7500 (5530) max. 15000 (11060)
Max rotation speed, slow gear r/min min. 60 max. 30
Max rotation torque, fast gear Nm (ftlb)min. 5000 (3690) max. 10000 (7370)
Max rotation speed, fast gear r/min min. 90 max. 45


OPTIONSpeed switching valve
OPTIONTilt function
OPTIONSliding cuttings collector
OPTIONDifferent sub savers