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 
 

811 Items found

Refine by

Current selections:
Category: Roller Chain Sprockets
Number of Teeth: 21
categories
brand
chain size
hub type
mounting method
mm in outside diameter
-
Need help?
080-22560416 Bengaluru  | 

INDICATES Contract Pricing

Page 1 of 163

Next

Compare
D16BTB21

COMPARE

D16BTB21

Description
D16BTB21 ROLLER CHAIN SPROCKET ; TB METRIC SNG & DBL

MARTIN SPROCKET & GR

Part # D16BTB21

BDI # 607463

Features

Chain Pitch - Inch: 1
Pitch Diameter - Inch: 6.709
Inch - Metric: Metric
Outside Diameter - Inch: 7.235
Chain Size: 16B-2

Material: Steel
Other Features: Taper Lock Bushing
Global Part Number GPN: 569272
Pitch Diameter - Millimeter: 170.42
Mounting Method: Bushed

Price Inventory : Available to order
QTY
D140B21

COMPARE

D140B21

Description
D140B21 ROLLER CHAIN SPROCKET ; DBL & TRPL A,B,C-S/B

MARTIN SPROCKET & GR

Part # D140B21

BDI # 607443

Features

Chain Pitch - Inch: 1.75
Pitch Diameter - Inch: 11.743
Inch - Metric: Inch
Outside Diameter - Inch: 12.661
Chain Size: 140-2

Material: Steel
Other Features: Duplex Type
Global Part Number GPN: 30522
Pitch Diameter - Millimeter: 298.28
Mounting Method: Rough Bore

Price Inventory : Available to order
QTY
35BS21HT 1

COMPARE

35BS21HT 1

Description
35BS21HT 1 ROLLER CHAIN SPROCKET ; BORE TO SIZE HARDENED TEETH

MARTIN SPROCKET & GR

Part # 35BS21HT 1

BDI # 618715

Features

Chain Pitch - Inch: 0.375
Pitch Diameter - Inch: 2.516
Inch - Metric: Inch
Outside Diameter - Inch: 2.713
Chain Size: 35

Material: Steel
Other Features: 2 Set Screws
Global Part Number GPN: 33007
Pitch Diameter - Millimeter: 63.91
Mounting Method: Finished Bore

Price Inventory : Available to order
QTY
35BS21HT 3/4

COMPARE

35BS21HT 3/4

Description
35BS21HT 3/4 ROLLER CHAIN SPROCKET ; BORE TO SIZE HARDENED TEETH

MARTIN SPROCKET & GR

Part # 35BS21HT 3/4

BDI # 618716

Features

Chain Pitch - Inch: 0.375
Pitch Diameter - Inch: 2.516
Inch - Metric: Inch
Outside Diameter - Inch: 2.713
Chain Size: 35

Material: Steel
Other Features: 2 Set Screws
Global Part Number GPN: 32545
Pitch Diameter - Millimeter: 63.91
Mounting Method: Finished Bore

Price Inventory : Available to order
QTY
35BS21 5/8

COMPARE

35BS21 5/8

Description
35BS21 5/8 ROLLER CHAIN SPROCKET ; 3/8" P 21T 5/8" BORE

MARTIN SPROCKET & GR

Part # 35BS21 5/8

BDI # 618714

Features

Chain Pitch - Inch: 0.375
Pitch Diameter - Inch: 2.516
Inch - Metric: Inch
Outside Diameter - Inch: 2.713
Chain Size: 35

Material: Steel
Other Features: 2 Set Screws
Global Part Number GPN: 32372
Pitch Diameter - Millimeter: 63.91
Mounting Method: Finished Bore

Price Inventory : Available to order
QTY

© copyright 2025 BDI All Rights Reserved