Model Engine Company of America
2-15-2020
ENGINE BEARINGS
Its easy to order replacement bearings for most model engines.

Our racing bearings have special ball retainers made by us that are designed for 30,000+ RPM's
 
NOTE:

All rear bearings are open.
Most front bearings have one seal or shield facing forward. Some are open.
Some 4-strokes have two seals or shields on front bearing.

Inch Series
ID x OD x W
Type
MECOA/K&B
Part No.
.250 x .625 x .196
Standard
open
1-shield
1-seal
2-seals
918-R4
918-R4Z
18-0012
918-R4RR
Racing
open
.375 x .875 x .219
Standard
open
18-0008 or 25205
Racing
.375 x .875 x .281
Standard
open
1-shield
1-seal
2-seals
918-R6
918-R6Z or 1046-251
18-0002
918-R6RR
.500x.875x.219
Standard
open
13742
.500 x 1.125 x .250
Standard
open
13842
Racing
.625 x 1.375 x .281
Standard
open
METRIC Series
ID x OD x W
Type
MECOA/K&B
Part No.
5 x 16 x 5
Standard
Open
7 x 14 x 3.5
.275 x .551 x .138
Standard
open
7 x 19 x 6
.275 x .748 x .236
Standard
open
1-seal
2-seals
       
8 x 16 x 5
Standard
open
11CX03C
8 x 22 x 7
.315 x .866 x .276
Racing
open

18-8446

Standard
open
1-seal
2-seals
9 x 17 x 4
.354 x .669 x .157
Standard
open
9 x 17 x 5
.354 x .669 x .157
Standard
1-shield
9 x 20 x 6
.354 x .787 x .236
Standard
1-shield
9 x 24 x 7
.354 x .944 x .276
Standard
open
10 x 19 x 5
Standard
open
1008-252 or 11742
Special bearing 11 x 22 x 5
.433 x .866 x .197
Standard
open
12 x 24 x 6
.472 x .944 x .236
Standard
open
Racing
12 x 28 x 8
.472 x 1.102 x .315
Standard
2-seals
open
1-shield
Special bearing 12.5x24x6
Standard
open
13 x 24 x 6
.512 x .945 x ..236
Racing
open
15 x 28 x 7
.590 x 1.102 x .276
Standard
open
Racing
15 x 32 x 8
.590 x 1.260 x .315
Standard
open
15 x 32 x 9
.590 x 1.260 x .354
Standard
open
Racing
17 x 30 x 7
.669 x 1.181 x .276
Standard
open
18-0017 or 26642
Racing
17 x 35 x 8
.669 x 1.378 x .315
Standard
open
Racing
open
ULTRA SPECIAL METRIC/INCH MIX
ID x OD x W
Type
MECOA/K&B
Part No.
15mm x 1.250 inch x .250 inch
Special Size
Racing
open
       
One Way Starter Bearings
MECOA/K&B
Part No.
Shaft Size
Hex Size
Length
6 mm
14 mm
6 mm
14 mm
4 mm
11 mm
       
       
Roller Bearings
ID x OD x W
Type
MECOA/K&B
Part No.