STS Metric Range

Capacities from 234 to 2649 kN
Bolt sizes from M16 to M100
Working pressure 1500 bar

The STS metric bolt tensioner range is designed for topside operation in a wide variety of applications including pipeline flanges, heat exchangers, pressure vessels, compressor covers, boiler feed pumps, anchor bolts and many others. The range comprises of 32 metric size options ranging from M16 to M100 thread size and all models are suitable for working pressures up to 1500 bar. Each model of hydraulic tensioning cylinder within the tensioner range can be operated with a variety of threaded pullers and nut rotating sockets ensuring that the maximum possible range of bolt sizes can be accommodated using the minimum number of hydraulic cylinders. Threaded pullers and nut rotating sockets are available as individual components.

All Hi-Force hydraulic bolt tensioners are designed and manufactured to include a wear coated piston, maximum piston stroke indicator, self-energising high pressure seals, dual quick connect couplings for easy multiple tensioner connection and a user friendly operation and maintenance procedure.

Single acting design with manual piston retraction
High grade alloy steel construction
Nitrocarburised piston
Maximum piston stroke indicator
Dual quick connect couplings for easy connection
Designed to fit most sizes of ANSI and API flanges and some Compact flanges
Interchangeable accessories to cover multiple stud bolt sizes using same tensioner

Specifications

Model No.	Bolt Thread Size	Thread pitch	Capacity		Effective area cm²	Stroke mm	Weight kg	Dimensions in mm
Model No.	Bolt Thread Size	Thread pitch	kN	tonnes	Effective area cm²	Stroke mm	Weight kg	A	B	C	D	E	F
STS1-M16B1	M16	2	234	23.9	15.6	10	1.7	74	28	74	90	45	47
STS1-M18B1	M18	2.5	234	23.9	15.6	10	1.7	74	28	74	90	45	49
STS1-M20B1	M20	2.5	234	23.9	15.6	10	1.7	74	28	74	90	45	51
STS1-M22B2	M22	2.5	234	23.9	15.6	10	1.7	74	30	80	98	45	56
STS1-M24B2	M24	3	234	23.9	15.6	10	1.7	74	30	80	98	45	59
STS1-M27B2	M27	3	234	23.9	15.6	10	1.7	74	30	80	98	45	61
STS2-M30B1	M30	3.5	457	46.6	30.5	15	3.5	102	39	103	128	54	71
STS2-M33B1	M33	3.5	457	46.6	30.5	15	3.5	102	39	103	128	54	74
STS2-M36B1	M36	4	457	46.6	30.5	15	3.5	102	39	103	128	54	77
STS2-M39B1	M39	4	457	46.6	30.5	15	3.5	102	39	103	128	54	80
STS3-M42B1	M42	4.5	822	83.8	54.8	15	6.1	133	47	115	150	56	91
STS3-M45B1	M45	4.5	822	83.8	54.8	15	6.1	133	47	115	150	56	94
STS3-M45B2	M45	4.5	822	83.8	54.8	15	6.1	133	50	117	155	56	105
STS3-M48B1	M48	5	822	83.8	54.8	15	6.1	133	47	115	150	56	97
STS3-M48B2	M48	5	822	83.8	54.8	15	6.1	133	50	117	155	56	105
STS3-M52B2	M52	5	822	83.8	54.8	15	6.1	133	50	117	155	56	105
STS4-M48B1	M48	5	1264	128.9	84.3	15	10.6	163	50	119	149	57	105
STS4-M52B1	M52	5	1264	128.9	84.3	15	10.6	163	50	119	149	57	108
STS4-M52B2	M52	5	1264	128.9	84.3	15	10.6	163	62	135	165	57	120
STS4-M56B2	M56	5.5	1264	128.9	84.3	15	10.6	163	62	135	165	57	120
STS4-M60B2	M60	5.5	1264	128.9	84.3	15	10.6	163	62	135	165	57	124
STS4-M64B2	M64	6	1264	128.9	84.3	15	10.6	163	62	135	165	57	126
STS5-M64B1	M64	6	1833	186.9	122.2	15	16.0	193	73	145	187	60	134
STS5-M68B1	M68	6	1833	186.9	122.2	15	16.0	193	73	145	187	60	136
STS5-M72B1	M72	6	1833	186.9	122.2	15	16.0	193	73	145	187	60	139
STS5-M76B1	M76	6	1833	186.9	122.2	15	16.0	193	73	145	187	60	142
STS6-M76B1	M76	6	2649	270.0	176.6	15	23.5	233	84	178	216	64	158
STS6-M80B1	M80	6	2649	270.0	176.6	15	23.5	233	84	178	216	64	160
STS6-M85B1	M85	6	2649	270.0	176.6	15	23.5	233	84	178	216	64	162
STS6-M90B1	M90	6	2649	270.0	176.6	15	23.5	233	84	178	216	64	170
STS6-M95B3	M95	6	2649	270.0	176.6	15	23.5	233	105	205	257	64	184
STS6-M100B3	M100	6	2649	270.0	176.6	15	23.5	233	105	205	257	64	190

Note: Weight is for load cell and bridge only. Total weight of complete assembly depends on size of puller and nut rotating socket selected. Tommy bars are not included. Hi-Force recommends one tommy bar for every four tensioners.