Sorry, online purchases are not available in your country.
Confirmation
Do you really want to delete this item(s) from your shopping cart?
Close

Managing quotes online is only available to users with corporate accounts. You can still request a quote, but it will be emailed to you.

Request Quote

Upgrade to a corporate account for advanced options and personal service.

ATTENTION
Attention
  • BDI’s Warehouse Store is a limited catalog featuring only stocked items, priced exclusively for self-service online purchases made within the BDI Warehouse Store.

  • Pricing shown is available ONLY in the Warehouse Store and NOT from BDI Branch offices.

  • All sales are taxable (no tax free purchases) and payable by credit card. They cannot be charged to your BDI account.

  • All orders include a $5 ground shipping charge.

  • To purchase with your BDI account, please click Cancel.
  
ATTENTION
Attention
Soon you will not be able to run BDIExpress with Internet Explorer.

Microsoft is discontinuing support for the Internet Explorer web browser and obsoleting it. Microsoft is recommending switching to Microsoft Edge.



Or click below to download another browser 
 

50B21 X 42MM https://www.bdiexpress.com/medias/INDM-GSPKTXX-RC-B-1-KW-STL-300x300.jpg?context=bWFzdGVyfHJvb3R8MjAzOTl8aW1hZ2UvanBlZ3xhRGhrTDJnd015ODVPVFU0TkRFek5qWTBNamcyTDBsT1JFMHRSMU5RUzFSWVdGOVNRMTlDWHpGZlMxZGZVMVJNWHpNd01IZ3pNREF1YW5Cbnw5N2YzNzdhNWU3YWRjZjNkY2QyNjU1YTZmZDQ4ZTRkOGU0ZTE0OTIzZTdjMWQ5NmQ1OTMyZDY5MTAyNjA4ZGVk
23130230 Roller Chain Sprockets 

MARTIN SPROCKET & GR MARTIN SPROCKET & GR

50B21 X 42MM

Description

50B221 X 42MM SPRCOCKET

Roller Chain Sprocket; 42MM Bore; 50 Chain; 21 Teeth; 1 Row of Teeth; No Hardened Teeth; 114.859MM Outside Diameter; 106.52MM Pitch Diameter; B-Hub One Side; Finished Bore Mount; 15.88MM Chain Pitch; ANSI Roller Chain Type; Keyway; Steel Material

Part #

50B21 X 42MM

BDI #
23130230

Details

2099-12-31 http://schema.org/NewCondition https://schema.org/LimitedAvailability Your Price Request A Price BDIExpress
QTY

Inventory

Total: Available to order

Category
Roller Chain Sprockets
Brand
MARTIN SPROCKET & GR
Manufacturer Name
MARTIN SPROCKET & GEAR
Minimum Buy Quantity
N/A
Weight / Kilogram
0
Product Group - BDI
M02312
Chain Size
50
Number of Teeth
21
Number of Rows of Teeth
1
Hub Type
B-Hub One Side
Mounting Method
Finished Bore
Bushing Size if bushed
No Bushing
Hardened Teeth
No
Chain Type
ANSI Roller Chain
Keyway Yes/No
Yes
Material
Steel
Minimum Plain Bore
No
Inch - Metric
Metric
Category - BDI
Sprocket
Harmonized Tariff Code
8483.90.10.50
Noun
Sprocket
Keyword String
Roller Chain
Manufacturer URL
https://www.martinsprocket.com
Long Description
Roller Chain Sprocket; 42MM Bore; 50 Chain; 21 Teeth; 1 Row of Teeth; No Hardened Teeth; 114.859MM Outside Diameter; 106.52MM Pitch Diameter; B-Hub One Side; Finished Bore Mount; 15.88MM Chain Pitch; ANSI Roller Chain Type; Keyway; Steel Material
Pitch Diameter
4.194 Inch | 106.52 Millimeter
Bore
1.654 Inch | 42 Millimeter
Outside Diameter
4.522 Inch | 114.859 Millimeter
Chain Pitch
0.625 Inch | 15.88 Millimeter

These items are similar to the one you've selected.
You can uncheck any attribute to search for other items which vary in relation to that attribute.

Find alternatives

Refresh

© copyright 2025 BDI All Rights Reserved