Friction Kelly Bar

Friction Kelly bars are used with piling rigs for drilling in silt, clay and less dense sand and gravel. The Friction Kelly bars manufactured by DRILLSTAR are un-lockable with drive keys on each section. Kelly bars can be equipped with specially designed springs or pressure plates for shock absorbing purpose. Please see below chart of some of our standard productions for Friction Kelly bars:

Identification No.	Torque(ton.m)	O.D.(mm)	Sections	Drilling Depth (m)
FK 36/470/3/27~28	36	470	3	27~28
FK 36/470/4/36~72	36	470	4	36~72
FK 25/440/3/36	25	440	3	36
FK 25/440/4/50	25	440	4	50
FK 25/440/5/65	25	440	5	65
FK 28/394/3/24~48	28	394	3	24~48
FK 28/394/4/32~65	28	394	4	32~65
FK 18/377/3/36	18	377	3	36
FK 18/377/4/50	18	377	4	50
FK 22/406/3/36	22	406	3	36
FK 22/406/4/50	22	406	4	50
FK 36/508/4/60	36	508	4	60
FK 36/508/5/75	36	508	5	75

      

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*Other sizes can be manufactured as per customer demand