22
A.0500.501 – IM-TGGS/05.01 EN (03/2013)
3.14 Play between gear teeth
TG GS
2-25
3-32
6-40
15-50
23-65
58-80
86-100
185-125
Minimum (µm)
320
320
320
360
400
400
400
440
Maximum (µm)
640
640
640
720
800
800
800
880
3.15 Maximum size of solid particles
TG GS
2-25
3-32
6-40
15-50
23-65
58-80
86-100
185-125
Size (µm)
80
80
90
120
125
150
165
190
3.16 Shaft sealing
Mechanical seal according to EN12756 (DIN24960) – General information
In TopGear TG GS the short EN12756 (DIN24960) single mechanical seal can be built in.
The mechanical seal is set against the rotor shoulder.
TG GS pump size
2-25
3-32
6-40
15-50
23-65
58-80
86-100
185-125
Shaft diameter
18
22
35
40
55
Short EN12756 (DIN 24960)
KU018
KU022
KU035
KU040
KU055
L-1K (short KU)
37.5
37.5
42.5
45
47.5
Dimensions in mm
Performance
Maximum performance such as viscosity, temperature and working pressure depends on the make of
the mechanical seal and the used materials.
The following basic values can be taken into consideration:
Maximum temperatures of elastomers
Nitrile (P):
110°C
FPM (Fluorocarbon):
180°C
PTFE (solid or PTFE wrapped):
220°C
Chemraz:
230°C
Kalrez®*:
250°C
* Kalrez® is a registered trademark of DuPont Performance Elastomers
Maximum viscosity
3000 mPas:
For single mechanical seals of light construction e.g. Burgmann MG12
5000 mPas:
For mechanical seals of strong torque construction
(consult manufacturer).
The maximum allowed viscosity between the sliding faces of the mechanical seal depends on the
nature of the liquid (Newtonian, plastic etc.), the sliding speed of the seal faces and the mechanical
construction.
Play between gear teeth
