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Tentec
®
www.tentec.net
Aero Model: WTB
Fully aware of the difficulties associated with wind turbine blade tensioning,
the new Tentec Aero WTB is a purpose designed range of hydraulic bolt
tensioning tools to suit most wind turbine bolting applications. All
WTB Tensioning tools have the capacity to achieve the specified
proof load requirements as detailed in EN ISO 898-1:1999 and
ASTM A490M for grade 10.9 Bolts. These feature packed tensioners have been designed with rapid tensioning in mind and
offer a safe, reliable and consistent method to simultaneously
tension many bolts.
Main Wind Turbine bolted applications
Image Courtesy of Nordex GmbH
• Rear Main Bearing
• Nacelle Frame
• Nacelle/Yaw Bearing
• Blade to Bearing
• Front Main Bearing
• Intermediate Tower Bolting
Swivel movement ensures versatility.
Due to the very limited space available in many blade bolt compartments and to help
where many tensioners are connected together every Aero WTB tensioner has the
option of a 360º swivel connection. This 360º swivel operation allows the hydraulic
hoses to be positioned in the best possible position to allow open access to the tensioning tools.
360º degree swivel action ensures that the hoses are
positioned where you want them.
Geared Nut Run-Down
The inclusion of a gear nut run-down mechanism offers a very rapid and consistent way of seating the hexagon nuts during the tensioning procedure. A common
1/2” square drive hand torque wrench can be used to rapidly seat the nuts to the
required 30Nm (Max) torque.
Tentec products are subject to continual development and we reserve the right to make changes in the
specification and design of products without prior notice.
Geared Nut Rundown, allows for rapid seating of
hexagon nut.
Tentec Limited
Plymouth House. Guns Lane
West Bromwich. West Midlands
United Kingdom. B70 9HS
ISO 14001
BS OHSAS 18001
© 2012 - Tentec Limited.
ISO 9001
Internet: www.tentec.net
email:[email protected]
Telephone: +44(0)121 524 1990
Telefax: +44(0)121 525 1999
Document No: TDR:100R1
• Quick Delivery, Local Stock
• On-Site Support
• On-Site Training
• Technical Assistance
• Easy On-Site Tool
Maintenance
“Snap-Down” Nut Drive.
High Life Puller
Specially Designed Tools
Again to increase speed all Aero WTB tensioners are fitted with a spring loaded device that
automatically engages the tensioner drive socket with the hexagon nut. The operation is completely transparent to the operator and no time
is wasted aligning the tensioner with the nut.
At the heart of all Aero WTB tensioners is
the Puller. Manufactured from high grade
aerospace material and carefully designed
to give the maximum possible life.
All Aero WTB tensioners have a device that
ensures the tool fails safely in the unlikely
event of a puller failure.
Tentec have many years experience of designing bespoke special Bolt Tensioning Tools
for instances where standard tools are not
suitable. Contact Tentec for more information
Optional Cycle Counter
For maintenance scheduling purposes all
Aero WTB Tools offer an optional mechanical
pressure cycle counter. See at a glance exactly how many pressurisations the tool has
performed.
A
Dmin
Stud Protrusion
B
Automatic Tensioner Reset
‘Best Fit’
Again to increase speed all Aero WTB tensioners are fitted with a spring mechanism
that automatically resets the tensioner once
the pressure has been released to zero.
The tensioner is then automatically ready to
tension the next bolt, no operator intervention is required.
Aero WTB Tensioners are profile cut at the
base to ensure they fit onto as many applications as possible. The interchangeable profile
cut spacer at the base of the tool gives the
tensioner the flexibility to be used on many different applications.
Technical Specification - WTB
Ident
Ident
Bolt Diameter
Diameter
Bolt
Maximum Working Pressure = 1350bar
Stud Protrusion
Protrusion
Stud
(mm)
(mm)
Max Stroke
Stroke
Max
Maximum Load
Load
Maximum
Hydraulic Pressure
Pressure
Hydraulic
Area
Area
Dia A
A
Dia
Height B
B
Height
D
D
Weight
Weight
Metric
Metric
Min
Min
Max
Max
mm
mm
kN
kN
lbs
lbs
mm2
mm2
In2
In2
mm
mm
mm
mm
mm
mm
kg
kg
WTB30
WTB30
WTB33
WTB33
M30
M30
M33
M33
59
59
64
64
69
69
73
73
WTB36
WTB36
WTB39
WTB39
M36
M36
M39
M39
71
71
76
76
81
81
86
86
88
10
10
10
10
465.38
465.38
575.80
575.80
678.26
678.26
104622
104622
129444
129444
152478
152478
3447.21
3447.21
4265.09
4265.09
5024.05
5024.05
5.343
5.343
6.611
6.611
7.787
7.787
72
72
79
79
84.5
84.5
205
205
217.5
217.5
229.5
229.5
64
64
71
71
77
77
6.16
6.16
7.24
7.24
8.75
8.75
WTB42
WTB42
WTB45
WTB45
M42
M42
M45
M45
83
83
88
88
93
93
98
98
10
10
10
10
810.58
810.58
929.67
929.67
182225
182225
208999
208999
6004.20
6004.20
6886.37
6886.37
92
92
97
97
11.12
11.12
12.75
12.75
WTB48
WTB48
WTB56
WTB56
M48
M48
M56
M56
94
94
110
110
104
104
120
120
1079.48
1079.48
1221.57
1221.57
1686.19
1686.19
242682
242682
274620
274620
379070
379070
WTB64
WTB64
M64
M64
124
124
134
134
10
10
2221.00
2221.00
499300
499300
7996.12
7996.12
9048.67 14.025
14.025
9048.67
12490.29 19.359
19.359
12490.29
16461.30 25.515
25.515
16461.30
263
263
262.5
262.5
275.5
275.5
83
83
95
95
10
10
10
10
10
10
9.307
9.307
10.674
10.674
12.394
12.394
105
105
111
111
132
132
286.5
286.5
314
314
94.5
94.5
100.5
100.5
115
115
15.86
15.86
17.84
17.84
26.5
26.5
150
150
352
352
124
124
35
35
Dia A
A
Dia
Height B
B
Height
D
D
Weight
Weight
Technical Specification - WTB Low Height
Ident
Ident
WTBLH36
WTBLH36
WTBLH42
WTBLH42
Bolt Diameter
Diameter
Bolt
Stud Protrusion
Protrusion
Stud
(mm)
(mm)
Max Stroke
Stroke
Max
Maximum Load
Load
Maximum
Hydraulic Pressure
Pressure
Hydraulic
Area
Area
Metric
Metric
Min
Min
Max
Max
mm
mm
kN
kN
lbs
lbs
mm2
mm2
In2
In2
mm
mm
mm
mm
mm
mm
kg
kg
M36
M36
M42
M42
71
71
83
83
91
91
103
103
10
10
10
10
678.14
678.14
930.15
930.15
152452
152452
209106
209106
5023.4
5023.4
6889.96
6889.96
7.79
7.79
10.68
10.68
123
123
142.5
142.5
167.5
167.5
181.3
181.3
---
9.97
9.97
13.94
13.94