Home > news

Contact

Bauer kelly bar from Unimate

2019-04-18

Bauer kelly bar from Unimate. For last few years, unimate made kelly bar for Bauer BG12 BG15 BG26 BG28 BG30 BG36 BG38 BG44 BG55 etc.

Kelly pipe raw Material: 1st and 2nd Q345B same as ST53; 3rd and 4th 35CrMo same as 25CrMo4V.

For Bauer BG20

For Bauer BG26

Maintenance Intervals

For kellys used under normal soil conditions (non-cohesive and cohesive soils up to grade 6)

Prescribed intervals for

double and triple kellys

quadruple and quintuple kellys

1st inspection after

100-150 hours

50-100 hours

Subsequent inspection every:

400-500 hours

250-300 hours

For kellys used under tougher conditions, the interval should be shortened by half the time given.

     In case of a failure such:

Ø Sections are slipping through

Ø Kelly top cover is deformed

Ø Sections will not retract extend smoothly

Disassembly and repair will require a free space as long as double the length of the Kelly when it is retracted.

For Bauer BG38