Hi-Force product

STS Range - Imperial

Topside Bolt Tensioners - Imperial

Single acting design with manual piston retraction
High grade alloy steel construction
Nitrocarburised piston
Maximum piston stroke indicator

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Product Overview

The STS imperial 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 26 imperial size options ranging from ¾” to 4” thread size and all models are suitable for working pressures up to 1500 bar.

Capacities from 234 to 2649 kN
Bolt sizes from ¾" to 4"
Working pressure 1500 bar

Product resources

STS - Imperial Catalogue Page

STS1 Spare Part Sheet

STS2 Spare Part Sheet

STS3 Spare Part Sheet

STS4 Spare Part Sheet

STS5 Spare Part Sheet

STS6 Spare Part Sheet

STS Operating Manual

Model Number	Bolt Thread Size	Threads per inch	Capacity		Effective area cm2	Stroke mm	Weight kg
Model Number	Bolt Thread Size	Threads per inch	kN	tonnes	Effective area cm2	Stroke mm	Weight kg
STS1-075B1	3/4"	10	234	23.9	15.6	10	1.7
STS1-087B1	7/8"	9	234	23.9	15.6	10	1.7
STS1-100B2	1"	8	234	23.9	15.6	10	1.7
STS1-112B2	1 1/8"	8	234	23.9	15.6	10	1.7
STS2-125B1	1 1/4"	8	457	46.6	30.5	15	3.5
STS2-137B1	1 3/8"	8	457	46.6	30.5	15	3.5
STS2-150B1	1 1/2"	8	457	46.6	30.5	15	3.5
STS3-162B1	1 5/8"	8	822	83.8	54.8	15	6.1
STS3-175B1	1 3/4"	8	822	83.8	54.8	15	6.1
STS3-175B2	1 3/4"	8	822	83.8	54.8	15	6.1
STS3-187B1	1 7/8"	8	822	83.8	54.8	15	6.1
STS3-187B2	1 7/8"	8	822	83.8	54.8	15	6.1
STS3-200B2	2"	8	822	83.8	54.8	15	6.1
STS4-187B1	1 7/8"	8	1264	128.9	84.3	15	10.6
STS4-200B1	2"	8	1264	128.9	84.3	15	10.6
STS4-200B2	2"	8	1264	128.9	84.3	15	10.6
STS4-225B2	2 1/4"	8	1264	128.9	84.3	15	10.6
STS4-250B2	2 1/2"	8	1264	128.9	84.3	15	10.6
STS5-250B1	2 1/2"	8	1833	186.9	122.2	15	16.0
STS5-275B1	2 3/4"	8	1833	186.9	122.2	15	16.0
STS5-300B1	3"	8	1833	186.9	122.2	15	16.0
STS6-300B1	3"	8	2649	270	176.6	15	23.5
STS6-325B1	3 1/4"	8	2649	270	176.6	15	23.5
STS6-350B1	3 1/2"	8	2649	270	176.6	15	23.5
STS6-375B3	3 3/4"	8	2649	270	176.6	15	23.5
STS6-400B3	4"	8	2649	270	176.6	15	23.5

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.

Tensioner Range	Tommy Bar
STS1	TTB06
STS2	TTB08
STS3	TTB10
STS4	TTB10
STS5	TTB14
STS6	TTB14

Dimensions (mm)

Model Number
Model Number	A	B	C min	D	E	F
STS1-075B1	74	28	74	90	45	51
STS1-087B1	74	28	74	90	45	54
STS1-100B2	74	30	80	98	45	61
STS1-112B2	74	30	80	98	45	64
STS2-125B1	102	39	103	128	54	74
STS2-137B1	102	39	103	128	54	77
STS2-150B1	102	39	103	128	54	80
STS3-162B1	133	47	115	150	56	92
STS3-175B1	133	47	115	150	56	93
STS3-175B2	133	50	117	155	56	104
STS3-187B1	133	47	115	150	56	97
STS3-187B2	133	50	117	155	56	104
STS3-200B2	133	50	117	155	56	104
STS4-187B1	163	50	119	149	57	104
STS4-200B1	163	50	119	149	57	104
STS4-200B2	163	62	119	149	57	106
STS4-225B2	163	62	135	165	57	121
STS4-250B2	163	62	135	165	57	127
STS5-250B1	193	73	145	187	60	134
STS5-275B1	193	73	145	187	60	140
STS5-300B1	193	73	145	187	60	147
STS6-300B1	233	84	178	216	64	161
STS6-325B1	233	84	178	216	64	167
STS6-350B1	233	84	178	216	64	172
STS6-375B3	233	105	205	257	64	191
STS6-400B3	233	105	205	257	64	196

Services and support

Whether it is choosing the right tool for the job, improving technical and operational knowledge or product maintenance and warranty, HES is here to help.

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