TOP DRIVE FLOATING CUSHION SUB

The top drive floating cushion sub is a critical supporting component in drilling operations. Widely applied in petroleum, natural gas development and geological exploration drilling, it is particularly well-suited for vertical drilling in deviated and straight wells using top drive-equipped rigs. This assembly effectively absorbs shocks and vibrations during drilling, greatly extending the service life of key components inside the top drive swivel box, including bearings and gears, while enhancing overall equipment operational stability.

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Technical Specification

Lifting Load	Stroke	Seal Pressure	Working Torque	Weight	Connection
Ton	mm(inch)	MPa(PSI)	KNm(Ibfft)	KG	Connection
150	76(3)	35(5,000)	30(22,000)	310	6-5/8 REG B×P
180	76(3)	35(5,000)	50(37,000)	440	6-5/8 REG B×P
250	76(3)	35(5,000)	50(37,000)	380	6-5/8 REG B×P