Boart Longyear Drill Rod Specifications

Dcdma standardizes w world drill rod with coarser 3 tpi threads and larger od 1966. 30 provides a third of the strength. The lf 230 deep hole drill provides the features and the power required to get just about any job done easily and efficiently.

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Canadian longyear starts producing rod and casing in north bay 1958.

Boart longyear drill rod specifications.

English pdf in hole tools catalog. Lf 230 core drill technical data sheet boart longyear is constantly striving to improve its products and must therefore reserve the right to change designs materials specifications and price without notice. Rod midbody outer diameter 114 00 mm 4 50 in rod midbody inner diameter 106 00 mm 4 19 in rod joint inner diameter 102 0 mm 4 0 in rod stiffness moment of inertia 53 739 mm483 3 in4. They only have pin thread case hardening for wear.

Lm 75 underground coring drill rig. Other drill rods are typically through wall hardened to 32 hrc. To new unused boart longyear rods used in a straight vertical hole assuming compliance to wireline drill rod care and handling manual and standard core drilling practices. Click on the links below to view catalogs and information for boart longyear s complete drilling services tooling and drill rig product line.

Rod weight per unit length 37 30 kg 3 m 82 16 lb 10 ft rod content weight water per unit length 8 80 l m 0 70 gal ft. This is a measure of how much load a joint can carry as compared to the midbody e g. All standard rotary overburden casing is manufactured by boart longyear with a double start cylindrical thread. English pdf diamond products catalog.

Coring rods and casing catalog. This difference minimizes wear compared to the rapid galling that other threads experience. Boart introduces first q wireline system 1965. Lf 230 surface coring drill rig.

20 ft container load of 3 0 m 10 ft rods holds 20 bundles 380 rods 40 ft container load of 3 0 m 10 ft rods holds 30 bundles 570 rods do not use rods shorter than 1 5m at top of hole as a drive sub or kelly rod because they do not have q t heat treatment. Q drill rod launched with tapered acme thread. Boart longyear coring rods are case hardened on the pin thread to maximum hardness 60 hrc creating a significant hardness difference between pin and box. Conical threads are similar in thread form and appearance to cylindrical threads except there is a 0 5 1 0 angle resulting in a slight conical shape.

Designed to be modular with a number of options the lm75 is easily tailored to specific needs and can be upgraded when requirements change. A 40 000 lb hoist allows for rig depth capacity beyond its class. The lm 75 is a mid sized drill rig for underground diamond coring with a 75 kw electric motor.