Zoro Homepage
Clipboard Icon Quick Order Cart Icon 0 Cart

Sprocket, Plain, 25 Chain Size, 1/4 Bore Dia., 21 # of Teeth

  • Mfr # 25B21

  • Zoro # G2920407


product price: $14.79
/ea

Key Features

Industry Chain Size
25
Number of Teeth - Sprockets
21
Bore Dia. - Sprockets
1/4 in
Outside Dia.
2 in
Number of Chain Rows
Single
See all product information
Get a 10% off coupon
Free 30-day returns
Return Policy
Get 30 days to pay with Net 30
Apply Now
Real support from real people
Contact our U.S. based team

Specifications

Product Information

MFR #
25B21
Zoro #
G2920407
UPC #
097039313409
Country of Origin
China

Dimensions

Industry Chain Size
25
Bore Dia. - Sprockets
1/4 in
Outside Dia.
2 in
Length through Bore (In.)
5/8
Bore Dia. (In.)
1/4
Pitch Dia. (In.)
1.678
Outside Dia. (In.)
1.809
Hub Dia. (In.)
1-3/8
Pitch Dia.
1.678 in
Length through Bore
5/8 in
Hub Dia.
1.375 in
Bore Diameter
1/4 in
Outside Diameter
1.809 in
Maximum Bore Diameter
7/8 in
Pitch Diameter
1.678 in
Hub Diameter
1 3/8 in
Tooth Width
0.11 in

Details

Number of Teeth - Sprockets
21
Number of Chain Rows
Single
Material - Sprockets
Carbon Steel
Number of Teeth
21
ANSI Sprocket Number
25
Sprocket Bore Type
Plain Bore
Item - Roller Chain Sprockets
Roller Chain Sprocket
Max. Bore - Sprockets
7/8 in
Type
Plain Bore
Item
Sprocket
Material
Steel
Max. Bore (In.)
7/8
Sprocket Hub Type
Type B
Includes
Set Screws
Bore Type
Plain
Industry Chain Pitch
1/4 in
Chain Number
25
Set Screw Location
90 Degrees from Keyway
Standards
ANSI
For Pitch Type
Single Pitch
Resistance Properties
Corrosion Resistant
Hub Type
One-Sided Hub
For Number of Strands
Single
For Chain Pitch
1/4 in
Material Grade
1045
Teeth Heat Treatment
Not Hardened
Finish
Black Oxide
Hub Projection
0.515 in

Description

Sprocket, Bore Diameter 1/4 in, For Chain Pitch 1/4 in, For Number of Strands Single, Hub Type One Side, Material Steel, Maximum Bore Diameter 7/8 in, Number of Teeth 21, Outside Diameter 1.809 in, Pitch Diameter 1.678 in, Bore Type Plain, Chain Number 25, Finish Black Oxide, For Pitch Type Single Pitch, Hub Diameter 1 3/8 in, Hub Projection 0.515 in, Includes Set Screws, Keyway Yes, Length through Bore 5/8 in, Material Grade 1045, Resistance Properties Corrosion Resistant

Ratings & Reviews

3 Reasons You Can Count On Us

  • Supplies for every job.

    Supplies for every job.

    10 million items and the exact one you need.

  • When you need it fast, count on Zoro!

    When you need it fast, count on Zoro!

    2 million products ship in 1 day.

  • Stretch your budget further.

    Stretch your budget further.

    Everyday low prices on the brands you love.