Esx Series Automatic Return Bolt Tensioner Maximum Working Pressure
1500Bar
Product Brief
Available in standard or custom models, to suit any application.
Works with hand, air or electrical pump types.
Bolt tensioning cylinders with one piston surface and with
automatic piston return for high bolting cycles. With innovative
AILESEN quick exchange mechanism for different bolt designs.
Designed to match common flange standards.
Features of Stu
1. Single acting design spring return
2. Simple design, easy to operate
3. Made of high-quality anti-corrosion materials, increased
anti-corrosion performance
4. Maximum stroke indicator line to warn operator not to overextend
the piston
5. Two quick oil inlets for easy use of tools in tandem
6. Overtravel safety valve
7. Designed to fit most sizes of ANSI and API flanges as well as
some compact flanges
8. Replaceable quick pull heads for handling other bolt sizes
Technical parameters for reference
Type | Threadsize | Preload forco | Stroke |
| Inch | Metric | Kn | Ton | mm |
| ESX1 | 3/4’’ | M20 | 160 | 16 | 15 |
| ESX2 | 13/16’’ | M22 | 275 | 28 | 15 |
| 7/8’’ | M24 |
ESX3
| 7/8’’ | M24 |
375 |
38 |
15 |
| 1’’ | M27 |
| 1 1/8’’ | M30 |
ESX4
| 7/8’’ | M24 |
460 |
46 |
15 |
| 1’’ | M27 |
| 1 1/8’’ | M30 |
| 1 1/4’’ | M33 |
ESX5 | 1 1/8’’ | M30 |
660 |
66 |
15 |
| 1 1/4’’ | M33 |
| 1 3/8’’ | M36 |
| 1 1/2’’ | M39 |
ESX6 | 1 1/4’’ | M33 |
785 |
78 |
15 |
| 1 3/8’’ | M36 |
| 1 1/2’’ | M39 |
| 1 5/8’’ | M42 |
ESX7 | 1 3/8’’ | M36 |
925 |
92 |
15 |
| 1 1/2’’ | M39 |
| 1 5/8’’ | M42 |
| 1 3/4’’ | M45 |
ESX8 | 1 1/2’’ | M39 |
1070 |
107 |
15 |
| 1 5/8’’ | M42 |
| 1 3/4’’ | M45 |
| 1 7/8’’ | M48 |
ESX9 | 1 5/8’’ | M42 |
1225 |
122 |
15 |
| 1 3/4’’ | M45 |
| 1 7/8’’ | M48 |
| 2’’ | M52 |
ESX10 | 1 3/4’’ | M45 |
1575 |
157 |
15 |
| 1 7/8’’ | M48 |
| 2’’ | M52 |
| 2 1/4’’ | M56 |
ESX11 | 1 7/8’’ | M48 |
1960 |
196 |
15 |
| 2’’ | M52 |
| 2 1/4’’ | M56 |
| 2 3/8’’ | M60 |
| 2 1/2’’ | M64 |
ESX12 | 2 3/8’’ | M60 |
2600 |
260 |
15 |
| 2 1/2’’ | M64 |
| 2 3/4’’ | M68 |
| 3’’ | M72 |
| 3’’ | M76 |
ESX13 | 2 1/2’’ | M64 |
3050 |
305 |
15 |
| 2 3/4’’ | M68 |
| 3’’ | M72 |
| 3’’ | M76 |
| 3 1/4’’ | M80 |
ESX14 | 3’’ | M72 |
3600 |
360 |
15 |
| 3’’ | M76 |
| 3 1/4’’ | M80 |
| M85 |
| 3 1/2’’ | M90 |
ESX15 | 3 1/2’’ | M90 |
4725 |
472 |
15 |
| 3 3/4’’ | M95 |
| 4’’ | M100 |
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