Play Between Gear Teeth; Maximum Size Of Solid Particles; Shaft Sealing - Johnson Pump TG GS2-25 Instruction Manual

3.14 Play between gear teeth

TG GS
Minimum (µm)
Maximum (µm)
Play between gear teeth

3.15 Maximum size of solid particles

TG GS
Size (µm)

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
Shaft diameter
Short EN12756 (DIN 24960)
L-1K (short KU)
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):
FPM (Fluorocarbon):
PTFE (solid or PTFE wrapped):
Chemraz:
Kalrez®*:
* Kalrez® is a registered trademark of DuPont Performance Elastomers
Maximum viscosity
3000 mPas:
5000 mPas:
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.
22
2-25 3-32 6-40 15-50
320 320 320 360
640 640 640 720
2-25 3-32 6-40 15-50
80 80 90 120
2-25
6-40
3-32
18 22
KU018 KU022
37.5 37.5
110°C
180°C
220°C
230°C
250°C
For single mechanical seals of light construction e.g. Burgmann MG12
For mechanical seals of strong torque construction
(consult manufacturer).
23-65 58-80 86-100 185-125
400 400 400 440
800 800 800 880
23-65 58-80 86-100 185-125
125 150 165 190
15-50 58-80
185-125
23-65 86-100
35 40
KU035 KU040 KU055
42.5 45 47.5
A.0500.501 – IM-TGGS/05.01 EN (03/2013)
55