Technical specifications and parameters for Top Drive

Specification

250Ton

350Ton

500Ton

Nominal drilling depth (5 1/2" drill pipe)

4,000m(13,000ft)

5,000m(16,000ft)

7,000m(23,000ft)

Rated load capacities

2,250KN(250t))

3,150KN(350t)

4,500KN(500t)

Drilling torque (continuous, max.)

32KN.m

36KN.m

54KN.m

Rotary speed

0 - 180rpm

0 - 180rpm

0 - 220rpm

Rated power of AC induction motor

315 KW x 1

350KW x 1

350KW x 2

Tilt angle of tilt arm ( max)

Forth 30" Back 55"

Forth 30" Back 55"

Forth 30" Back 55"

Maximum torque of break out

50KN.m

65KN.m

80KN.m

Working pressure of hydraulic system

16MPa

16MPa

16MPa

Input voltage of driving cabinet

600VAC

600VAC

600VAC

Range of variable frequency

Rated 0 - 121Hz

Rated 0 - 121Hz

Rated 0 - 121Hz

Shift gears range of motor

0 - 2,400rpm

0 - 2,400rpm

0 - 2,400rpm

Drill pipe range

2 7/8" - 5 1/2"

2 7/8" - 5 1/2"

2 7/8" - 5 1/2"

Alarm Temperature of motor

220degree

220degree

Alarm Temperature of gear oil

75degree

75degree

Alarm Temperature of hydraulic oil

75degree

75degree

Transmission ratio

12.8:1

10.4:1