Schaeffler Product catalogue - medias
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Planetary and angled gearboxes
Features
Content
 

Servo motors with increasing dynamic characteristics and performance levels are available as high accuracy
Deviation of the actual dimension from the nominal dimension as described by tolerances. For monorail systems, the parallel deviation of the reference surfaces within given tolerances.

See
Running accuracy
Dimensional accuracy
drive units for linear actuators. These servo motors are characterised by low mass moments of rotor inertia and high speeds. As a result, it is important to provide gearboxes with a reduction ratio as low in backlash as possible in order to increase the gearbox output torques and reduce the external mass moments of inertia.

 
   

Series PLN, PLE

 

In gearboxes of series PLN, the torque to be transmitted is branched into three power components, allowing a significantly smaller gearbox size than gearboxes of the same power level in which the torque is transmitted via only one tooth mesh.

 
 

Gearboxes of series PLN are also characterised by high dynamic characteristics, low torsional backlash, high torsional rigidity
Resistance to displacement under load in the elastic deformation area, dependent on bearing clearance and bearing type

See Deflection
and low mass.

 
 

Gearboxes PLN are sealed such that they can be operated in any mounting position.

 
 

They are fitted to the motors using clamping elements.

 
 

Gearboxes with a reduction ratio of 4, 8 or 16 are preferred types and are available within a very short time.

 
 

Gearboxes of series PLE have the same performance characteristics as those of series PLN. Series PLE has essentially the same dimensions as series PLN. In contrast to the low-backlash planetary gearboxes of series PLN with honed tooth flanks, however, the tooth flanks of series PLE are ground, offering a more economical alternative.

 
   

Technical data

 

Technical data on masses and torsional backlash, output torques and mass moments of inertia are given in the following tables.

 
   

Series WPLN

 

Angled gearboxes of series WPLN with hypoid gearing and axis offset are highly compact and also offer reduced running noise.

 
 

They are suitable for any mounting position and are lubricated for life.

 
   

Technical data

 

Technical data on masses and torsional backlash, output torques and mass moments of inertia are given in the following tables.

 
   
Table 1
Masses and torsional backlash
 

Designation
Mass
Torsional backlash
 kg
 
Angular minutes
Single stage
Twin stage
Single stage
Twin stage
GETR-PLN70 1,9
2,4
< 31)
< 52)
GETR-PLN90 3,3
4,2
< 31)
< 52)
GETR-PLN115 6,9
9,5
< 31)
< 52)
GETR-PLN142 16
20,5
< 31)
< 52)
GETR-PLE80/90 3,2
3,7
 71)
< 92)
GETR-PLE120/115 6,6
8,6
< 71)
< 92)
GETR-WPLN70 3
3,9
< 5
< 7
GETR-WPLN90 5
5,3
< 5
< 7
GETR-WPLN115 10,5
9,2
< 5
< 7

 
 
______
 1    Single stage: reduction ratio i = 3, 4, 5, 8, 10.
 
 
 2    Twin stage: reduction ratio i = 16, 20, 25, 40.
 
   
Table 2
Output torques
 

Designation
Output torque (fatigue strength) T2
Nm
Reduction ratio i
3
4
5
8
10
16
20
25
40
GETR-PLN70 45
60
65
40
27
77
123
104
104
GETR-PLN90 100
140
140
80
60
150
150
140
140
GETR-PLN115 230
300
260
150
125
300
300
260
260
GETR-PLN142 450
600
750
450
305
1 000
1 000
900
900
GETR-PLE80/90 85
115
110
50
38
120
120
110
110
GETR-PLE120/115 115
155
195
120
95
260
260
230
230
GETR-WPLN70 - 45
42
27
22
77
77
65
65
GETR-WPLN90 - 90
75
50
40
150
150
140
135
GETR-WPLN115 - 160
140
90
75
300
300
260
250

 
   
Table 3
Mass moments of inertia
 

Designation
Mass moment of inertia
kg · cm2
Reduction ratio i
3
4
5
8
10
16
20
25
40
GETR-PLN70 0,4
0,32
0,28
0,25
0,25
0,35
0,33
0,3
0,29
GETR-PLN90 1,01
0,78
0,68
0,59
0,57
0,89
0,82
0,76
0,7
GETR-PLN115 3,14
2,4
2,16
1,93
1,9
2,74
2,57
2,38
2,23
GETR-PLN142 16,8
12,2
10,3
8,7
8,4
14,5
13
11,9
10,8
GETR-PLE80/90 0,77
0,52
0,45
0,4
0,39
0,5
0,44
0,44
0,39
GETR-PLE120/115 2,63
1,79
1,53
1,32
1,3
1,75
1,5
1,49
1,3
GETR-WPLN70 - 0,65
0,6
0,53
0,52
0,64
0,59
0,59
0,53
GETR-WPLN90 - 1,33
1,19
1
0,97
0,64
0,59
0,59
0,53
GETR-WPLN115 - 5,92
5,44
4,99
4,88
1,37
1,19
1,19
1,01

 
   
  
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