You are here:

Motorcycle Repair/Honda CB92 roller bearing

Advertisement


Question
Hi again Bill. Greetings from South Africa. I want to buy a roller bearing on ebay which has the number N304SHSL on the casing. The part number quoted is correct, namely 91012-202-010 but my manual gives the number as N304SHS...without the 'L' at the end. Do you know what the 'L' stands for?
I would greatly appreciate your view. Many thanks. David.

Answer
http://www.rinku.zaq.ne.jp/cs92/C95-61E-003.htm for some reference.

http://www.bearing.co.il/1-AM7B.pdf  was interesting, but didn't shed any light on the suffixes.

Here are picture references:  http://www.cmsnl.com/honda-ca95-benly-touring-150-usa_model993/partslist/E02.htm

http://www.cmsnl.com/honda-cb92-benly-super-sport-125-general-export_model15757/

The bearing listed on Ebay is an -020, not -010. A is 010, B is 020 in the old part number system.

You have to be very careful about the main bearings on CB92s, as they did at least three different crankshafts.
1959- early 1961 bikes had larger center main bearings, with ring retainers.
1961 bikes had a smaller, pinned center bearing and ring type end bearings
1962-on machines had all three main bearings with locating pins.
Obviously all the engine cases have to match the bearings. So, the engine number/year is of great importance.

The L may be for Honda applications, as they are not specified in bearing nomenclature lists.
The load end gets the roller bearing and the opposite end gets a ball bearing to maintain the crankshaft position.

C92s have two configurations: center main bearing cranks and no center main bearing crankshafts, plus the other ring/pin locator features. It looks like two of the bearings have 205 codes for higher performance/reliability, but there is the 202-000 and 202-020 in the list.

Bill Silver

Motorcycle Repair

All Answers


Answers by Expert:


Ask Experts

Volunteer


Bill Silver

Expertise

Need help with vintage Hondas from the 1960s? I am an expert with 250-305cc bikes in particular and most all of the other pre-91 models, in general. I do NOT claim to have a great deal of experience on Gold Wings, Cruisers, ATC/ATVs and dirt bikes.

Experience

I have owned/ridden/maintained Honda motorcycles for 35 years. I have written five books on Honda repairs and collecting. I was a service manager for two Honda shops back in the 1980s.

Organizations
VJMC (Vintage Japanese Motorcycle Club) of North America

Publications
VJMC newsletter, as editor for two years and as contributing editor currently.

Education/Credentials
3 years auto shop in high school, teacher's aide in Automotive Technology in Jr. College, Diesel mechanic course in college, self-taught mechanic and automotive writer.

©2016 About.com. All rights reserved.