U.S. Tsubaki Power Transmission, LLC
U.S. Tsubaki Holdings, Inc.
Corporate Headquarters
301 E. Marquardt Dr.
Wheeling, IL 60090 USA

Toll Free: 800.323.7790
Phone: 847.459.9500
Fax: 847.459.9515
Email: sales@ustsubaki.com
Website: www.ustsubaki.com
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ANSI-Spkt
No. 35 - 3/8" Pitch - Plain Bore Sprockets-2
Unit of Measure
Items Stock Sprocket No. 25 - 1/4" Pitch - A
25A18
No. 25 - 1/4" Pitch - Plain Bore Sprockets 		Stock Sprocket No. 25 - 1/4" Pitch - A
25A19
No. 25 - 1/4" Pitch - Plain Bore Sprockets 		Stock Sprocket No. 25 - 1/4" Pitch - A
25A20
No. 25 - 1/4" Pitch - Plain Bore Sprockets 		Stock Sprocket No. 25 - 1/4" Pitch - A
25A21
No. 25 - 1/4" Pitch - Plain Bore Sprockets 		Stock Sprocket No. 25 - 1/4" Pitch - A
25A22
No. 25 - 1/4" Pitch - Plain Bore Sprockets
Stock Bore Diameter N/A 0.250 in N/A 0.250 in N/A 0.250 in N/A 0.375 in N/A 0.375 in
Hub Diameter N/A
LTB N/A
Pitch N/A 0.250 in
Style N/A A
Chain Size N/A 25
No. Teeth N/A 18 N/A 19 N/A 20 N/A 21 N/A 22
Outside Diameter N/A 1.568 in N/A 1.648 in N/A 1.729 in N/A 1.809 in N/A 1.889 in
Pitch Diameter N/A 1.440 in N/A 1.519 in N/A 1.598 in N/A 1.678 in N/A 1.757 in
Caliper Diameter N/A 1.310 in N/A 1.383 in N/A 1.468 in N/A 1.543 in N/A 1.627 in
Max. Bore1 N/A
Weight N/A 0.040 lb N/A 0.040 lb N/A 0.040 lb N/A 0.040 lb N/A 0.060 lb
Inside Width  N/A 0.125 in
Roller Diameter  N/A 0.130 in
Tooth Nominal Width N/A 0.110 in
Hardened Teeth  N/A No
  • 1 Dimensions shown allow for standard keyway with set screw at 90°.