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Locking unit, Series LU6
► Ø32 - 125 mm ► Holding and braking: non-adjustable spring, Release: compressed air
 
Version   Clamping jaw lock
Function  
Static holding
Dynamic braking
Release pressure   4 bar / 10 bar
Ambient temperature min./max.   -25°C / +80°C
Medium temperature min./max.   -25°C / +80°C
Medium   Compressed air
Max. particle size   5 µm
Oil content of compressed air   0 mg/m³ 

Materials:
Housing  Aluminum,  anodized
Seal  Nitrile butadiene rubber
Scraper  Nitrile butadiene rubber
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Data sheet

Manufacturer's declaration

Declaration of conformity

Operating Instructions

Operating conditions

Standards used
Technical Remarks
The pressure dew point must be at least 15 °C under ambient and medium temperature and may not exceed 3 °C.
The maximum ambient and medium temperature is +70 °C for the dynamic braking function.
Note:
Before pressurizing the locking unit, make sure that there is a balance of forces at the piston on the drive cylinder. Please see the operating instructions for further safety-relevant information. The locking unit can be used in controls with a max. performance level e in accordance with DIN EN ISO 13849-1 ("basic and well-tried safety principles"). For applications in category 2 to 4 controls, additional control measures according to DIN EN ISO 13849-1 are required.
The locking unit can be used as an individual component or pre-mounted on a cylinder..
Scope of delivery: LU6, each with 4 flange nuts, washers, and tie rods

Piston Ø   [mm] 32 40 50 63 80
Max. holding/braking force FLU6 [N] 760 1200 1900 3000 5000
Max. moving mass, external mmax [kg] 77 122 194 306 510
Max. piston speed vmax [m/s] 1 1 1 1 1
Max. total braking energy Etotal [106 J] 3,2 6 10 18 36
Max. braking energy per hour PLU6 [J/h] 720 1350 2250 4050 8100
Max. braking energy per braking cycle ELU6 [J] 4,8 9 15 27 54
Braking energy per braking cycle related to B10d EB10d [J] 1,6 3 5 9 18
Brake response time (4 bar) tbrake [s] 0,08 0,08 0,08 0,08 0,08
Brake response time (6.3 bar) tbrake [s] 0,1 0,1 0,1 0,1 0,1
Brake response time (10 bar) tbrake [s] 0,12 0,12 0,12 0,12 0,12
Piston Ø   [mm] 100 125      
Max. holding/braking force FLU6 [N] 8000 12000      
Max. moving mass, external mmax [kg] 815 1223      
Max. piston speed vmax [m/s] 1 1      
Max. total braking energy Etotal [106 J] 58 93      
Max. braking energy per hour PLU6 [J/h] 13200 21000      
Max. braking energy per braking cycle ELU6 [J] 88 140      
Braking energy per braking cycle related to B10d EB10d [J] 29 47      
Brake response time (4 bar) tbrake [s] 0,09 0,09      
Brake response time (6.3 bar) tbrake [s] 0,11 0,11      
Brake response time (10 bar) tbrake [s] 0,13 0,13      
The values for the max. braking energy per braking cycle are equivalent to the cushioning energy for cylinder series PRA and TRB.

 
Piston Ø
suitable piston rod Ø
Piston rod extension
Compressed air connection
Required flow rate
Weight
Max. torsional moment of piston rod
Part No.
 
 
 
 
 
Qn
 
 
 
 
[mm]
[mm]
[mm]
 
[l/min]
[kg]
[Nm]
 
32
12
125
G 1/8
50
0,8
0,5
40
16
125
G 1/8
70
1
1
50
20
145
G 1/8
140
1,8
2
63
20
165
G 1/8
240
2,8
2,5
80
25
185
G 1/8
450
5,5
5
100
25
220
G 1/8
700
9,5
9
125
32
220
G 1/4
1200
13,8
15
...Part No.
B10d value
static
B10d value
dynamic
Buckling protection of the piston rod 1)
... 
 
 
Max. cylinder stroke for Euler case 1
Max. cylinder stroke for Euler case 2
... 
 
 
[mm]
[mm]
5.000.000
2.000.000
750
400
1100
550
1350
700
950
500
1350
700
950
500
1500
800
1) Only applies in dynamic cases, and only retracting

Formulas and sample calculations
Brake force pre-selection, locking unit LU6 Example: 30 kg load (brakes)
Fload = m * g * 2 (safety factor)
FLU6 ≥ Fload
588,6 N = Fload
760 N for Ø32 = FLU6
Pre-selection, PRA /TRB cylinder diameter Example: 30 kg load, 500 mm stroke, 6 bar, vertical movement, cycle time 0.65 s
a) Cylinder diameter test
➔ Calculation Tool : Test both movement directions
Ø32: Too much energy
Ø40: correct energy
b) Piston speed test ➔ Calculation Tool
vload ≤ vmax
0,77 m/s = vload
1,00 m/s = vmax
c) Brake energy test
Eload = ½ m * v2
ELU6 ≥ Eload
8,9 J = Eload
9,0 J = ELU6
Test: LU6 performance Example: 30 kg load, 120 brakes per hour
Pload = Eload * nbrake
PLU6 ≥ Pload
1067,2 J/h = Pload
1350 J/h = PLU6
Calculation of the expected service life Example: 30 kg load, LU6 Ø40
Etotal / Eload = B10d
B10d ≤ 2 * 106
674.650 = B10d
Calculation of the braking distance
sbrake = sdead time + sLU6
sdead time = (tbrake + tvalve) * vload
sLU6 = Eload / FLU6
tvalve = depending on the valve used

Circuit example for non-safety relevant functions:
mounting orientation horizontal
Vertical mounting orientation


Circuit example for safety-related stop functions: Vertical mounting orientation
Channel 1: Safe stopping and closing
Channel 2: Safe brake control
Channel 1: Safe stopping and closing
Channel 2: Safe brake control


Dimensions


Piston Ø
ØA
ØB
d11
C
EE
E2
L19
L20
ØKK
e8-h9
TG
RT
U
VD
32
30,5
30
9
G1/8
48
125
44
12
32,5
M6
10
19
40
35,5
35
9
G1/8
53
125
44
16
38
M6
10
21
50
40,5
40
9
G1/8
63
145
49
20
46,5
M8
11
28
63
45,5
45
10
G1/8
75
165
52
20
56,5
M8
11
28
80
45,5
45
11
G1/8
98
185
61,5
25
72
M10
16
34
100
55,5
55
13
G1/8
118
220
68
25
89
M10
16
37
125
60,5
60
13
G1/4
142
220
75
32
110
M12
16
45



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Part numbers marked in bold are available from the central warehouse in Germany, see the shopping basket for more detailed information
Pneumatics catalog, online version, as of 2016-11-21, © AVENTICS S.à r.l., subject to change