YSJ Type Z Oil Jar

Product Detail

YSJ Type Z Oil Jar

Technical Features

YSJ type hydraulic up jar is used to be free from drilling sticking ,through hydraulic principle, by means of elastic potential produced from drill tool elastic deformation. Once the elastic potential energy is released, it would produce a large up striking load to reach a purpose of fishing and coring. It features easy structures, strong jarring force, easy to return, convenient operation. If it is used with ZJS type jar intensifier, it may gain better jarring effect.

working principle

The key principle is : the piston moves up and make hydraulicking so that it makes enough time to make drill tool to save energy. With the piston continue to move slowly to releasing bore, after the binding of hydraulic oil is released, elastic potential is released by drill tool saved , immense dynamic loading is passed to drill tool due to jar pad ‘s hitting on the bottom of up jar cylinder liner. A desire return mechanism makes a reciprocating jarring action.

Technical Parameters

Parameters/Model	YSJ95B	YSJ108B	YSJ114B	YSJ121B	YSJ159B	YSJ178B	YSJ203B	YSJ229B
Product Code	0103000	0105000	0106000	0108000	0110000	0113000	0115000	0116000
O.D. (mm)	95	108	114	121	159	178	203	229
I.D. (mm)	28	32	38	38	57	57	71	76
Work stroke (mm)	245	254	289	290	380	380	380	380
Ma. work torque (kN.m)	4	4.5	4.9	7.8	15	19.6	22	25
Max. jarring lifting tons (kN)	160	180	200	300	600	650	800	900
Sealing pressure (MPa)	30	30	30	30	30	30	30	30
Max. work temperature (℃)	150	150	150	150	150	150	150	150
Connection	NC26	NC31	NC31	NC38	NC50	NC50	6 5/8 REG	7 5/8 REG
(mm)	2450	2450	2660	3065	3340	3340	3500	3500