Page 69 - Vetus

FLEXIBLE COUPLINGS

Type Bullflex
Example
An engine has an output of 84 kW at maximum 3,600 r.p.m. and a gearbox ratio of 2.1:1.
The maximum speed of the propeller shaft is 3.600 = 1,714 r.p.m.
2,1
Therefore, the power to be transmitted per 100 r.p.m. is 84 = 4.9 kW/100 r.p.m.
17,14
From the table, the correct model is a Bullflex 8 for a pleasure craft or a Bullflex 12 for a commercial craft.
This formula can also be used with the relevant tables for Uniflex, Combiflex and Type 6 flexible couplings.

DIN 6270 B = DIN 6270 A = maximum d
pleasure craft kW commercial craft torque max. r.p.m. max. r.p.m. D L
Type (HP)/ kW (HP)/ Nm at zero at 2º mm
Bullflex inch inch
100 shaft 100 shaft DIN DIN misalignment misalignment (mm) (mm)
RPM RPM
6270B 6270A
15
1 0.8 (1.1) 0.5 (0.7) 75 45 7000 3500 3 / (100 ) 3 / (85) 20, 25
11
16 32
2 1.6 (2.1) 0.9 (1.3) 150 90 6500 3250 4 / (120) 4 / (120) 20, 25
23
23
32
32
29
4 3.1 (4.3) 2.1 (2.8) 300 200 6000 3000 5 / (150) 6 (152) 25, 30
32
8 6.3 (8.5) 4.3 (5.8) 600 410 5000 2500 6 / (170) 6 / (166) 30, 35, 40
17
11
16 32
12 9.8 (12.8) 7.1 (9.6) 900 540 4000 2000 7 / (200) 6 / (177) 35,40,45
31
7
32
8
5
16 12.6 (17.1) 9.8 (13.3) 1200 935 4000 2000 8 / (205) 7 / (197) 40, 45, 50
3
64 4
32 23.0 (31.3) 18.6 (25.3) 2200 1780 3600 1800 10 / (260) 10 / (263) 40, 50, 60, 70
23
15
64 64
Specifications
maximum
DIN 6270 B = DIN 6270 A = torque max. r.p.m. max. r.p.m.
pleasure craft kW commercial craft kW Nm D L d
Type at zero at 2º inch inch
(HP)/ 100 shaft (HP)/ 100 shaft DIN DIN misalignment misalignment (mm)
RPM RPM (mm) (mm)
6270B 6270A
11
BULFL0120 0.8 (1.1) 0.5 (0.7) 75 45 7000 3500 3 / (100 ) 3 / (85) 20
15
16 32
BULFL0125 0.8 (1.1) 0.5 (0.7) 75 45 7000 3500 3 / (100) 3 / (85) 25
11
15
16
32
BULFL0220 1.6 (2.1) 0.9 (1.3) 150 90 6500 3250 4 / (120) 4 / (120) 20
23
23
32 32
23
BULFL0225 1.6 (2.1) 0.9 (1.3) 150 90 6500 3250 4 / (120) 4 / (120) 25
23
32 32
BULFL0425 3.1 (4.3) 2.1 (2.8) 300 200 6000 3000 5 / (150) 6 (152) 25
29
32
BULFL0430 3.1 (4.3) 2.1 (2.8) 300 200 6000 3000 5 / (150) 6 (152) 30
29
32
BULFL0830 6.3 (8.5) 4.3 (5.8) 600 410 5000 2500 6 / (170) 6 / (166) 30
17
11
16 32
BULFL0835 6.3 (8.5) 4.3 (5.8) 600 410 5000 2500 6 / (170) 6 / (166) 35
11
17
16
32
BULFL0840 6.3 (8.5) 4.3 (5.8) 600 410 5000 2500 6 / (170) 6 / (166) 40
17
11
16 32
31
BULFL1235 9.8 (12.8) 7.1 (9.6) 900 540 4000 2000 7 / (200) 6 / (177) 35
7
8 32
BULFL1240 9.8 (12.8) 7.1 (9.6) 900 540 4000 2000 7 / (200) 6 / (177) 40
7
31
8
32
BULFL1245 9.8 (12.8) 7.1 (9.6) 900 540 4000 2000 7 / (200) 6 / (177) 45
7
31
8 32
3
5
BULFL1640 12.6 (17.1) 9.8 (13.3) 1200 935 4000 2000 8 / (205) 7 / (197) 40
64 4
BULFL1645 12.6 (17.1) 9.8 (13.3) 1200 935 4000 2000 8 / (205) 7 / (197) 45
3
5
4
64
BULFL1650 12.6 (17.1) 9.8 (13.3) 1200 935 4000 2000 8 / (205) 7 / (197) 50
3
5
64 4
BULFL3245 23.0 (31.3) 18.6 (25.3) 2200 1780 3600 1800 10 / (260) 10 / (263) 45
15
23
64 64
BULFL3250 23.0 (31.3) 18.6 (25.3) 2200 1780 3600 1800 10 / (260) 10 / (263) 50
15
23
64
64
BULFL3260 23.0 (31.3) 18.6 (25.3) 2200 1780 3600 1800 10 / (260) 10 / (263) 60
15
23
64 64
15
BULFL3270 23.0 (31.3) 18.6 (25.3) 2200 1780 3600 1800 10 / (260) 10 / (263) 70
23
64 64
Model Type Shaft Size Imperial Ø Model Type Shaft Size Imperial Ø
BUFL011 Type Bullflex1 1” BUFL1213 Type Bullflex12 1¾”
BUFL021 Type Bullflex2 1” BUFL1612 Type Bullflex16 1½”
BUFL041 Type Bullflex4 1” BUFL1613 Type Bullflex16 1¾”
BUFL0814 Type Bullflex8 1¼” BUFL162 Type Bullflex16 2”
BUFL0812 Type Bullflex8 1½” BUFL3213 Type Bullflex32 1¾”
BUFL1212 Type Bullflex12 1½” BUFL322 Type Bullflex32 2”
Type Description
BUL16SET Set stud & bolts 7/16” UNF for couplings type Bullflex 12 and 16
BUL32SET Set stud & bolts For couplings type Bullflex 32
TMCSET Set stud & bolts For couplings type Bullflex with Technodrive Gearbox
UNISET4/5 Set stud & bolts For couplings type 1-8, and for flange 4”/5” Creators of Boat Systems 69