ROPAC COMPONENT SEALS
Installation, Operation & Maintenance Instructions
5
TYPE R33/34/50
Operating Instructions
The Type R33 is a general duty unbalanced seal with an elastomer O-ring
that incorporates a single wave spring design. For Ø10mm to 100mm, it
complies to DIN 24960, NF E 29991 and ISO 3069 with the benefit of being
shorter than L1K.
It is completed by a balanced variant Type 34 which is a higher duty seal.
The Type 50 seal is a single, balanced seal designed to meet DIN24960
(L1K) specification, specially designed with the spring and drive
mechanism outside of the product, decreasing clogging and permitting
simple efficient cleaning.
These instructions apply to the seal as installed in rotary equipment
and lubricated by the pumped fluid in accordance with the application
information contained in John Crane Seal Selection Manual or other
relevant approved John Crane seal selection literature or process. Typical
operating limits can be found on the specification sheet from John Crane.
The selection of materials used in the construction of a seal should
be made with regards to their temperature and chemical resistance/
compatibility with the liquid being pumped.
Typical Seal Cross Section and Seals Dimensions
FIGURE 2. Type R33
A
– Seal size
B
– 0.3-0.6 μm Ra
12-24 μinch Ra
C
– 1.6-3.2 μm Ra
63-125 μinch Ra
D
– 1.5 mm/0.060 inch
E
– 3.0 mm/0.120 inch
FIGURE 1. CHECKING THE MACHINE
1
Squareness of shaft
to seal chamber face
2
Concentricity seal
chamber bore to shaft
3
Shaft runout
4
Shaft end play
< 0.08 mm FIM, speed
≤
1,800 RPM
< 0.05 mm FIM, speed > 1,800 RPM
< 0.003 inch FIM, speed
≤
1,800 RPM
< 0.002 inch FIM, speed >1,800 RPM
<0.006 inch FIM
<0.15 mm FIM
< 0.08 mm FIM, speed
≤
1,800 RPM
< 0.05 mm FIM, speed > 1,800 RPM
< 0.003 inch FIM, speed
≤
1,800 RPM
< 0.002 inch FIM, speed >1,800 RPM
<0.003 inch FIM
<0.08 mm FIM
1
–
O-ring
2
–
Primary ring/face
3
–
Retainer/drive collar
4
–
Primary ring carrier
5
–
Retaining clip
6
–
Set screw
7
–
Spring
8
–
Mating ring/seat
9
–
O-ring
