Sunbeam

The cost of manufacturing replacement cages for the SU1 bearing is unusually high. Alpha can offer SU1M, which features a crowded race. This alternative design is recommended with every confidence. Customers who specifically require a caged bearing should note this on their order.

250cc

Year

Model

Con rod casting No.

Big end Part No.

Cage Part No

Small end Part No.

MAIN BEARINGS

Drive Side

Timing Side

  O.H.V. Models

1931-34 14, 24

SU2

K36

SE79

1934 Little 95

SU2

K36

SE79

1935 High Cam

1915M

SU1

K35

SE77

1936-38 14, 24

1637M

SU5

K36

SE80

1937-38 23

1637M

SU5

K36

SE80

1939-40 B23, c23

WHT

AMCSU

K4

SE1

 

350cc

Year

Model

Con rod casting No.

Big end Part No.

Cage Part No

Small end Part No.

MAIN BEARINGS

Drive Side

Timing Side

O.H.V. Models

1931-35 8, 10

SU2

K36

SE79

1937-38 24

1637M

SU5

K36

SE80

1939 350

WHT

AMC5

K3

SE1

 

500cc

Year

Model

Con rod casting No.

Big end Part No.

Cage Part No

Small end Part No.

MAIN BEARINGS

Drive Side

Timing Side

Side Valve Models

1929-31 5, 6, Lion Long Stroke

SU4/3

K36

SE79

1932-33 5, 6, Lion Long Stroke

SU4/3

K36

SE79

1934-39 Lion Long Stroke, 19/29 B29

1915M

SU1

K35

SE78

O.H.V. Models

1928-31 7, 9, 90, 12, 25, 27

SU4/3

K36

SE79

1932-33 7, 9, 90, 12, 25, 27

SU4/10

K36

SE79

1934-38 7, 9, 90, 12, 25, 27

1915M

SU1

K35

SE78

1939-40 B25, C25

WHT

AMC6

K3

SE1

600cc

Year

Model

Con rod casting No.

Big end Part No.

Cage Part No

Small end Part No.

MAIN BEARINGS

Drive Side

Timing Side

Side Valve Models

1931 Lion, Long Stroke

SU4/3

K36

SE79

1932-33 Lion, Long Stroke

SU4/10

K36

SE79

1935-40 Lion, Long Stroke, 20/30 B30 & C30

1915M

SU1

K35

SE78

O.H.V. Models

1931 9

SU4/3

K36

SE79

1932-33 9

SU4/10

K36

SE79

1934-38 9, 9C, 18, 28

1915M

SU1

K35

SE78

1939-40 B28, C28

WHT

AMC6

K3

SE1

Big end catalogue home page