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STU - SUB-SEA STUD BOLT TENSIONERS

Hi-Force STU series sub-sea stud bolt tensioners are designed and manufactured to suit the demanding requirements of divers operating in harsh sub-sea environments. With an easy to use two part construction, a quick release and fit threaded puller fitted as standard and an extra long stroke length, to reduce re-setting operations, Hi-Force STU sub-sea tensioners offer a consistent, reliable and cost effective method of tensioning sub-sea bolted joints.

» Working pressure 1500 Bar

» Easy to use two part construction

» Dual hose connection for easy hook up

» Available for imperial and metric stud bolts

» Extra long piston stroke to reduce re-setting time

» Single acting design with failsafe stroke limiting device

» Corrosion protected for operation in sub-sea environments

Model number	Stud bolt thread size	Capacity		Effective area cm2	Stoke mm	Weight kg	Dimensions in mm
Model number	Stud bolt thread size	kN	Tonnes	Effective area cm2	Stoke mm	Weight kg	A	B	C	D	E	F
IMPERIAL SUB-SEA TENSIONERS
STU1-100	1" - 8UN	256.04	26.10	17.07	30	3.2	82	22	129	129	150	61
STU1-112	1 1/8 " - 8UN	256.04	26.10	17.07	30	3.2	82	22	129	129	150	64
STU2-125	1 1/4 " - 8UN	430.36	43.87	28.69	30	4.8	102	30	140	140	164	73
STU2-137	1 3/8 " - 8UN	430.36	43.87	28.69	30	4.8	102	30	140	140	164	75
STU3-150	1 1/2 " - 8UN	533.39	56.41	36.89	30	6.2	114	35	142	142	169	82
STU3-162	1 5/8 " - 8UN	533.39	56.41	36.89	30	6.2	114	35	142	142	169	85
STU4-175	1 3/4 " - 8UN	756.30	77.09	50.42	30	8.5	128	41	151	151	181	94
STU4-187	1 7/8 " - 8UN	756.30	77.09	50.42	30	8.5	128	41	151	151	181	98
STU5-200	2" - 8UN	1168.19	119.08	77.88	30	12.2	148	48	164	164	202	112
STU5-225	2 1/4 " - 8UN	1168.19	119.08	77.88	30	12.2	148	48	164	164	202	116
STU6-250	2 1/2 " - 8UN	1649.12	168.11	109.94	30	19.2	176	60	183	183	231	136
STU6-275	2 3/4 " - 8UN	1649.12	168.11	109.94	30	19.2	176	60	183	183	231	141
STU7-300	3" - 8UN	2483.44	253.15	165.56	30	29.0	215	89	215	215	260	162
STU7-325	3 1/4 " - 8UN	2483.44	253.15	165.56	30	29.0	215	89	215	215	260	173
STU7-350	3 1/2 " - 8UN	2483.44	253.15	165.56	30	29.0	215	89	215	215	260	175
METRIC SUB-SEA TENSIONERS
STU1-24	M24 x 2	256.04	26.10	17.07	30	3.2	82	22	129	129	150	61
STU1-27	M27 x 3	256.04	26.10	17.07	30	3.2	82	22	129	129	150	64
STU2-30	M30 x 3.5	430.36	43.87	28.69	30	4.8	102	30	140	140	164	73
STU2-33	M33 x 3.5	430.36	43.87	28.69	30	4.8	102	30	140	140	164	75
STU2-36	M36 x 4	430.36	43.87	28.69	30	4.8	102	30	140	140	164	78
STU3-39	M39 x 4	553.39	56.41	36.89	30	6.2	114	35	142	142	169	82
STU3-42	M42 x 4.5	553.39	56.41	36.89	30	6.2	114	35	142	142	169	85
STU4-45	M45 x 4.5	756.30	77.09	50.42	30	8.5	128	41	151	151	181	94
STU4-48	M48 x 5	756.30	77.09	50.42	30	8.5	128	41	151	151	181	98
STU5-52	M52 x 5	1168.19	119.08	77.88	30	12.2	148	48	164	164	202	112
STU5-56	M56 x 5.5	1168.19	119.08	77.88	30	12.2	148	48	164	164	202	116
STU6-64	M64 x 6	1649.12	168.11	109.94	30	19.2	176	60	183	183	231	136
STU6-72	M72 x 6	1649.12	168.11	109.94	30	19.2	176	60	183	183	231	141
STU7-76	M/6 x 6	2483.44	253.15	165.56	30	29.0	215	94	215	215	260	164
STU7-80	M80 x 6	2483.44	253.15	165.56	30	29.0	215	94	215	215	260	164
STU7-85	M85 x 6	2483.44	253.15	165.56	30	29.0	215	94	215	215	260	175
STU7-90	M90 x 6	2483.44	253.15	165.56	30	29.0	215	94	215	215	260	175