Page 73 - Vetus

WATER LUBRICATED STERN GEAR

Self-aligning inner bearing and triple shaft seal for extra security
ZWBH seals are developed for use with water lubricated stern gear. This updated
monoblock design works in the same way as the trusted ZWB seals, with the addition
of one extra lip seal (three total) for added security. Minimal friction, oil and grease
3
resistant and with a / 8” (10 mm) vulcanised hose pillar for water injection; the ZWBH
is ready for another round!
VETUS advices annual lubrication with silicon grease to keep this sterngear seal in
optimal condition. ZWBH seals can withstand temperatures between -15° and + 85°
and are suitable for VETUS bronze, steel or GRP stern tubes. The set comes with two ZWBH..
stainless steel hose clamps and grease.

Type Description H L D d
43
ZWBH25 Flexible inner bearing, with triple lip seal 4 / ” 5 / ” 1 / ” 1”
11
13
32 64 16
13
ZWBH30 Flexible inner bearing, with triple lip seal 4 / ” 5 / ” 1 / ” 1 / ”
61
3
43
32 64 64 16
ZWBH35 Flexible inner bearing, with triple lip seal 4 / ” 5 / ” 2 / ” 1 / ”
3
13
45
13
64
64
8
32
Water lubrication connections
There are two possibilities to water lubricate your shaft assembly
1. By means of a water scoop G 3/8, with ball valve, hose pillar, 1 metre of water
hose and hose clamps, or
2. By tapping a small amount of water from the main engine’s raw water cooling
circuit.
Type Description
WCAPSET Water scoop kit for Ø 1 - / - / (25-30-35), shaft
3
3

8
16
49
9
WCAPS1/2 Water scoop kit for Ø 1 / - 1 / - 1 / (40-45-50), shaft WCAPS
31
16 64 32
For the second option we offer the ZWBKIT. With this kit you have all you need to water lubricate your shaft assembly by
using water from the main engine’s raw water cooling circuit.
The kit consists of a T-piece / 64 - / 64 - / 64 (18 -10 -18 mm), 9.84 ft. (3 metres) of Ø / 64 (10 mm) hose (DWHOSE10A) and
45
25
25
45
4 hose clamps.
Type Consist of Code
ZWBKIT 1 TP1810 T-piece TP1810
3 Fresh water hose per metre DWHOSE10A
5
23
5
4 Hose clamps AISI 304 / (9) Ø / - / (8 - 16) HCS08
64 16 8 ZWBKIT
Mounting flange for stern tube
The propeller end of the bronze stern tube is provided with an outer cutless bearing and a mounting flange. The slots in the
tube are designed for easy replacement of the cutless bearing. A second flange maybe required to secure the inboard end of
the stern tube and can be ordered separately.
Type Ø D inch R inch S inch T inch U inch Ø V inch
FLK25 1 (25) 45 / (18) 3 / (86) 2 / (72) 2 / (70) 21 / (8,5)
25
53
3
64
64
4
64
64
FLK30 1 / (30) 45 / (18) 3 / (90) 3 / (78) 2 / (74) 21 / (8,5)
29
3
35
5
16 64 64 64 32 64
13
FLK35 1 / (35) 29 / (23) 4 / (112) 3 / (97) 3 / (92) 13 / (10,5)
3
5
13
8 32 32 16 8 32
25
FLK40 1 / (40) 29 / (23) 4 / (116) 3 / (101) 3 / (96) 13 / (10,5)
31
9
9
16 32 16 32 32 32
1
49
7
FLK45 1 / (45) 1 / (28) 5 / (132) 4 / (118) 4 / (108) 33 / (13)
41
13
64 64 64 64 4 64
FLK50 1 / (50) 1 / (28) 5 / (138) 4 / (125) 4 / (114) 33 / (13) FLK
31
59
31
7
7
32
64
64
16
64
64
FLK60 2 / (60) 1 / (28) 5 / (148) 5 / (136) 4 / (124) 33 / (13)
23
23
7
53
7
64
64
8
64
64
64
All dimensions are in inches (mm)
Creators of Boat Systems 73