Sprocket Catalog

No. 25

PLAIN BORE SPROCKET DIMENSIONS

U.S. TSUBAKI STOCK SPROCKETS

HOW TO ORDER

U.S. Tsubaki Stock Sprockets

All dimensions in inches unless noted.

Chain Data Size

No. 25 Plain Bore Sprocket Diameters

Type “A” Plain Bore

Type “B” Plain Bore

No.

No. Teeth

Outside Diameter

Pitch Diameter

Caliper Diameter

Plain Bore

Wt. Lbs.

Plain Bore 0.250 0.250 0.250 0.250 0.250 0.250 0.250 0.250 0.250 0.250 0.250 0.250 0.250 0.250 0.250 0.375 0.375 0.375 0.375 0.375 0.375 0.375 0.375 0.500 0.500 0.500 0.500 0.500 0.500

MAX Bore*

Hub Dia.

Wt. Lbs. 0.03 0.03 0.04 0.06 0.07 0.08 0.10 0.12 0.14 0.16 0.19 0.25 0.28 0.31 0.32 0.33 0.34 0.35 0.36 0.38 0.40 0.46 0.50 0.53 0.56 0.56 1.00 1.10 1.30

LTB Style

Pitch

1/4" 1/8"

1/4" Pitch: PLAIN BORE How to Order Code: Example Model # for 25 Pitch Plain Bore Sprockets 25

Inside Width

S S S S S S S S S S S S S S S S S S S S S S S E E E E E E

0.837 0.919 1.002 1.083 1.167 1.246 1.326 1.407 1.487 1.568 1.648 1.729 1.809 1.889 1.969 2.049 2.129 2.209 2.369 2.529 2.688 2.928 3.008 3.327 3.725 3.964 4.442 4.920 5.876

0.731 0.809 0.870 0.996 1.045 1.124 1.203 1.282 1.361 1.440 1.519 1.598 1.678 1.757 1.836 1.915 1.995 2.074 2.233 2.392 2.551 2.789 2.889 3.187 3.584 3.823 4.300 4.777 5.732

0.591 0.679 0.748 0.836 0.907 0.994 1.066 1.152 1.225 1.310 1.383 1.468 1.543 1.627 1.702 1.785 1.861 1.944 2.103 2.262 2.421 2.656 2.739 3.057 3.452 3.693 4.170 4.647 5.602

NS NS NS NS NS NS

0.250 0.438 0.500 0.250 0.500 0.500 0.313 0.563 0.500 0.375 0.625 0.500 0.438 0.781 0.500 0.563 0.813 0.500 0.563 0.891 0.500 0.563 0.969 0.500 0.625 1.031 0.500 0.750 1.125 0.500 0.813 1.219 0.500 0.875 1.281 0.625 0.875 1.375 0.625 0.938 1.438 0.625 1.000 1.500 0.625 1.000 1.500 0.625 1.000 1.500 0.625 1.000 1.500 0.625 1.000 1.500 0.625 1.000 1.500 0.625 1.000 1.500 0.625 1.000 1.500 0.625 1.000 1.500 0.750 1.375 2.000 0.750 1.375 2.000 0.750 1.375 2.000 0.750 1.375 2.000 0.750 1.375 2.000 0.750 1.375 2.000 0.750

Roller Diameter

0.130" 0.110"

Nominal Tooth Width:

11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 28 30 32 35 36 40 45 48 54 60 72

A 25 A 36

0.250 0.250 0.250 0.250 0.250 0.250 0.375 0.375 0.375 0.375 0.375 0.375 0.375 0.375 0.375 0.375 0.375 0.500 0.500 0.500 0.500 0.500 0.500

0.040 0.040 0.040 0.040 0.040 0.040 0.040 0.060 0.060 0.080 0.080 0.090 0.100 0.120 0.140 0.160 0.180 0.200 0.250 0.320 0.380 0.540 0.740

Altered !!

Chain Pitch in Inches

Hub Type

Number of Teeth

15 16 17 18 19 20

21 22 23 24 25 26 17 18 19 20 21 22 23 24

28 30 32 35 36 40 25 26 28 30 32 35 36 40

45 48 54 60 72 45 48 54 60 72

A: No Hub

Extension

A: Alteration Required

25: 1/4" Pitch

10 11 12 13 14 15 16

B: Hub Extension One Side

!! Alteration field only to be denoted if a deviation from standard is required. Please reference Alterations in engineering section, page 210.

TOOTH (NOMINAL) .110˝

.110˝ NOMINAL

TOOTH (NOMINAL)

NOMINAL

* Dimensions shown allow for standard keyway with set screw at 90 degrees NS = Non Stock

LTB

TYPEA

STYLES TYPEB

STYLEE TYPEB