|
PRATT BURNERD |
|
 |
 |
Indexing Turrets
|
Dim
|
120
|
160
|
200
|
250
|
|
A
|
185
|
219
|
250
|
310
|
|
B
|
250
|
250
|
310
|
345
|
|
C
|
430
|
430
|
480
|
520
|
|
øD
|
90
|
120
|
145
|
182
|
|
E
|
50
|
73.5
|
66
|
82
|
|
F
|
219
|
219
|
164
|
210
|
|
H
|
80
|
80
|
100
|
125
|
|
I
|
M8
|
M8
|
M10
|
M12
|
|
M
|
6
|
6
|
9
|
10
|
|
øN
|
171
|
211
|
247
|
297
|
|
øO
|
110
|
140
|
162
|
202
|
|
øP
|
30
|
40
|
50
|
63
|
|
Q
|
165
|
190
|
220
|
280
|
|
R
|
32
|
32
|
40
|
44
|
|
S
|
32
|
32
|
30
|
43
|
|
øV
|
11
|
13
|
15
|
20
|
|
Z
|
114
|
114
|
130
|
150
|
|
K
|
385
|
385
|
440
|
485
|
|
W
|
45.5
|
45.5
|
40
|
45
|
|
a
|
COOLANT PORT
1/4" BSP
|
|||
|
b
|
UNCLAMP PORT
1/4" BSP
|
|||
|
c
|
CLAMP PORT
1/4" BSP
|
|||
|
d
|
VENT PORT 3/8"
BSP
|
|||
Fast Index 1.2 seconds per 180° for NSIGO (clamped to clamped)
|
Nominal Size
|
||||||
| Characteristic | Units | 120 | 160 | 200 | 250 | |
| Inertia at input shaft | kgm² | I | 0.025 | 0.024 | 0.051 | 0.040 |
| Drive ratio | - | G | 36:1 | 50:1 | 80:1 | 150:1 |
| Maximum pressure | bar | Pmax |
100
|
|||
| Effective area | mm² | Ac | 2800 | 2800 | 5200 | 7500 |
| Clamping force | kN | F |
F=P.Ac/10,000
|
|||
| Swept volume | litres | V | 0.0125 | 0.0125 | 0.022 | 0.031 |
| Displacement to disengage | mm | X | 3.5 | 3.5 | 3.5 | 3.5 |
| Dynamic Mass | kg | Md | 7.5 | 8.8 | 13.7 | 22.4 |
| Total Mass | kg | M | 43 | 53.5 | 72 | 91 |
| Frictional losses -torque | Nm | Tloss | 4 | 5 | 8 | 12 |
| Typical unbalanced load* | Nm | M0 | 10 | 20 | 40 | 100 |
| Max. Tangential Moments | Nm | M1 | 1800 | 3200 | 6400 | 12000 |
| Max. -ve axial load | kN | W1 |
W1 = 0.8.F
|
|||
| Max. +ve axial load | kN | W2 |
W2 = 2.F
|
|||
| Max. +ve coaxial load | kN | W3 |
W3 = 0.8.n.F
/ (b-n) where b>n(mm), W3=W2
|
|||
| Max. -ve axial load | kN | W4 | W4 = 0.8.n.F / (b+n) where b>n(mm), W4=W1 | |||
| Geometric parameter n | mm | n | 60 | 60 | 100 | 125 |
| *Dependant upon drive capabilities, typical = 1Nm continuous | ||||||
| Performance | 120 | 160 | 200 | 250 | ||
| Typical Performance with a 1 Nm 3000RPM Servometer and hydraulic supply 38bar at 201pm. (clamp/release incorporates electrical and hydraulic signal times) | ||||||
| Calmp release Time | ms | tc | 160 | 185 | 200 | 230 |
| Index 30° | ms | t30 | 250 | 250 | 300 | 320 |
| Index 45° | ms | t45 | 300 | 300 | 360 | 450 |
| Index 180° | ms | t180 | 620 | 680 | 960 | 1570 |
| Servomotor 1 Nm stall and 3.4Nm peak torque rating, 3000RPM | ||||||
| Index 30° | ms | t30 | 145 | 140 | 180 | 270 |
| Index 45° | ms | t45 | 175 | 180 | 250 | 395 |
| Index 180° | ms | t180 | 450 | 550 | 850 | 1520 |
All values in this table
are indicative and may be subject to change without prior notice
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