Spur & Change Gears

Motion carries a vast selection of spur and change gears for your mechanical power transmission needs. Browse through change gears, external tooth spur gears, spur gear idlers, and internal tooth spur gears.

Looking for high quality spur gears for your future projects and plans, or some replacement spur gears for existing systems and machines? No matter what kind of spur gears you require, you can find them all right here at Motion, the home of high quality industrial products.

What are Spur Gears?

Spur gears, which are also sometimes known as straight-cut gears, are a type of gears. They're often regarded as the simplest form of gear available and have one of the widest ranges of applications, due to their simplistic design. Like other kinds of gear, a spur gear consists of a cylinder or disk with a series of protruding teeth around the outside. The teeth are all identical in terms of shape and size, pointing straight out from the center of the gear itself.

There are two main types of spur gears: external and internal. External spur gears are those with the teeth on the outside of the cylinder, while internal spur gears have the teeth on the internal side of the cylinder.

What are Spur Gears Used for?

As with other kinds of gears, spur gears are classed as mechanical power transmission products, used for transferring mechanical energy along a system or throughout a piece of machinery. As the gears turn, they transfer movement to the next gear or part in the system, allowing various machines, systems, and appliances to function.

The Best Spur Gears

Gears are placed under high amounts of pressure, which is why it’s best to always use top quality gears that can withstand repeated use and heavy loads. You’ll find only the best spur gears for sale here at Motion.

Buy Spur Gears Online

Choose Motion for your next order of spur gears or any other kind of gears. We have a wide array of mechanical power products to choose from, with the lowest prices and best levels of customer support. Check out the full collection and order today.

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Martin S2016   

External Tooth Spur Gear - 20 DP, 14.5 ° PA, 16 Teeth, 0.375 in Face, 3/8 in Bore, Reboreable, Material: Steel

MI ITEM 00369729

IN STOCK
In stock
Martin S2016
$33.56each
for your price $33.56each
Martin S2016

Boston Gear (Altra) NA28B-1/2   

Spur Gear, 20 DP, 14 1/2 PA, 28 Teeth, Steel

MI ITEM 00374396

AVAILABLE
Factory Order
Boston Gear (Altra) NA28B-1/2
$78.38each
for your price $78.38each
Boston Gear (Altra) NA28B-1/2

Boston Gear (Altra) YD21   

Spur Gear, 12 DP, 20 PA, 21 Teeth, Steel

MI ITEM 00371802

IN STOCK
In stock
Boston Gear (Altra) YD21
$75.09each
for your price $75.09each
Boston Gear (Altra) YD21

Browning NSS1652   

External Tooth Spur Gear - 16 DP, 14.5 PA, 52 Teeth, 0.5000 in Face, 0.5000 in Bore, Minimum Plain Bore, Material: Steel

MI ITEM 00372835

AVAILABLE
Factory Order
Browning NSS1652
$146.63each
for your price $146.63each
Browning NSS1652

Boston Gear (Altra) YJ18-1-1/8   

Spur Gear, 6 DP, 20 PA, 18 Teeth, Steel

MI ITEM 03865032

AVAILABLE
Factory Order
Boston Gear (Altra) YJ18-1-1/8
$281.99each
for your price $281.99each
Boston Gear (Altra) YJ18-1-1/8

Browning NCG1055   

1224633 Change Gear - 10 DP, 14.5 ° Pressure Angle, 55 Teeth, 1.0000 in Bushing Bore Dia., 1.0000 in Face Width, 5.7000 in O.D.

MI ITEM 00375085

AVAILABLE
Factory Order
Browning NCG1055
$419.58each
for your price $419.58each
Browning NCG1055

Martin S612   

External Tooth Spur Gear - 6 DP, 14.5 ° PA, 12 Teeth, 1.5 in Face, 1 in Bore, Reboreable, Material: Steel

MI ITEM 00370521

IN STOCK
In stock
Martin S612
$116.78each
for your price $116.78each
Martin S612

Browning YSS2025   

External Tooth Spur Gear - 20 DP, 14.5 PA, 25 Teeth, 0.5000 in Face, 0.5000 in Bore, Minimum Plain Bore, Material: Steel

MI ITEM 00371661

AVAILABLE
Factory Order
Browning YSS2025
$80.68each
for your price $80.68each
Browning YSS2025

Martin S2023   

External Tooth Spur Gear - 20 DP, 14.5 ° PA, 23 Teeth, 0.375 in Face, 3/8 in Bore, Reboreable, Material: Steel

MI ITEM 00372871

AVAILABLE
Factory Order
Martin S2023
$42.95each
for your price $42.95each
Martin S2023

Martin S615BS 1 3/16   

External Tooth Spur Gear - 6 DP, 14.5 ° Pressure Angle, 1-1/2 in Face, 15 Teeth, 2.833 in Outside Diameter, Finished Bore, 1-3/16 in Bore, Hub with Keyway and Set Screw, Steel Material

MI ITEM 02102762

AVAILABLE
Factory Order
Martin S615BS 1 3/16
$223.94each
for your price $223.94each
Martin S615BS 1 3/16

Browning NSS10H30   

External Tooth Spur Gear - 10 DP, 14.5 PA, 30 Teeth, 1.0000 in Face, 0.3750 in Bore, Bushed Bore, Material: Steel

MI ITEM 00374768

IN STOCK
In stock
Browning NSS10H30
$201.34each
for your price $201.34each
Browning NSS10H30

Martin S1020BS 1   

External Tooth Spur Gear - 10 DP, 14.5 ° PA, 20 Teeth, 1 in Face, 1 in Bore, Bored to Size, Material: Steel

MI ITEM 02102688

IN STOCK
In stock
Martin S1020BS 1
$134.38each
for your price $134.38each
Martin S1020BS 1

Martin S2055   

External Tooth Spur Gear - 20 DP, 14.5 ° PA, 55 Teeth, 0.375 in Face, 3/8 to 1-1/4 in Bore, Reboreable, Material: Steel

MI ITEM 00372881

AVAILABLE
Factory Order
Martin S2055
$93.25each
for your price $93.25each
Martin S2055

Martin S624   

External Tooth Spur Gear - 6 DP, 14.5 ° PA, 24 Teeth, 1.5 in Face, 1-1/8 to 1-7/8 in Bore, Reboreable, Material: Steel

MI ITEM 00370557

IN STOCK
In stock
Martin S624
$261.79each
for your price $261.79each
Martin S624

Martin S1020BS 7/8   

External Tooth Spur Gear - 10 DP, 14.5 ° PA, 20 Teeth, 1 in Face, 7/8 in Bore, Bored to Size, Material: Steel

MI ITEM 02102690

AVAILABLE
Factory Order
Martin S1020BS 7/8
$134.38each
for your price $134.38each
Martin S1020BS 7/8

Browning NSS1648   

External Tooth Spur Gear - 16 DP, 14.5 PA, 48 Teeth, 0.5000 in Face, 0.5000 in Bore, Minimum Plain Bore, Material: Steel

MI ITEM 00369956

AVAILABLE
Factory Order
Browning NSS1648
$141.10each
for your price $141.10each
Browning NSS1648

Martin S1615   

External Tooth Spur Gear - 16 DP, 14.5 ° PA, 15 Teeth, 0.5 in Face, 1/2 in Bore, Reboreable, Material: Steel

MI ITEM 00369894

AVAILABLE
Factory Order
Martin S1615
$37.22each
for your price $37.22each
Martin S1615

Boston Gear (Altra) ND21B   

Spur Gear, 12 DP, 14 1/2 PA, 21 Teeth, Steel

MI ITEM 00370066

IN STOCK
In stock
Boston Gear (Altra) ND21B
$77.17each
for your price $77.17each
Boston Gear (Altra) ND21B

Boston Gear (Altra) NB54   

Spur Gear, 16 DP, 14 1/2 PA, 54 Teeth, Cast Iron

MI ITEM 00369961

AVAILABLE
Factory Order
Boston Gear (Altra) NB54
$127.08each
for your price $127.08each
Boston Gear (Altra) NB54

Martin S615BS 1 1/4   

External Tooth Spur Gear - 6 DP, 14.5 ° Pressure Angle, 1-1/2 in Face, 15 Teeth, 2.833 in Outside Diameter, Finished Bore, 1-1/4 in Bore, Hub with Keyway and Set Screw, Steel Material

MI ITEM 01373617

IN STOCK
In stock
Martin S615BS 1 1/4
$223.94each
for your price $223.94each
Martin S615BS 1 1/4

Martin S814   

External Tooth Spur Gear - 8 DP, 14.5 ° PA, 14 Teeth, 1.25 in Face, 3/4 to 13/16 in Bore, Reboreable, Material: Steel

MI ITEM 00370371

IN STOCK
In stock
Martin S814
$100.62each
for your price $100.62each
Martin S814

Browning NCG1240   

1223536 Change Gear - 12 DP, 14.5 ° Pressure Angle, 40 Teeth, 0.7500 in Bushing Bore Dia., 0.7500 in Face Width, 5.0000 in O.D.

MI ITEM 00375129

AVAILABLE
Factory Order
Browning NCG1240
$241.21each
for your price $241.21each
Browning NCG1240

Martin S622   

External Tooth Spur Gear - 6 DP, 14.5 ° PA, 22 Teeth, 1.5 in Face, 1 to 1-7/8 in Bore, Reboreable, Material: Steel

MI ITEM 00372642

IN STOCK
In stock
Martin S622
$223.74each
for your price $223.74each
Martin S622

Martin S828   

External Tooth Spur Gear - 8 DP, 14.5 ° PA, 28 Teeth, 1.25 in Face, 7/8 to 1-5/8 in Bore, Reboreable, Material: Steel

MI ITEM 00370408

IN STOCK
In stock
Martin S828
$214.32each
for your price $214.32each
Martin S828
Martin S2016
MI ITEM 00369729
In stock
$33.56each
Boston Gear (Altra) NA28B-1/2
MI ITEM 00374396
Available - Factory Order
$78.38each
Boston Gear (Altra) YD21
MI ITEM 00371802
In stock
$75.09each
Browning NSS1652
MI ITEM 00372835
Available - Factory Order
$146.63each
Boston Gear (Altra) YJ18-1-1/8
MI ITEM 03865032
Available - Factory Order
$281.99each
Browning NCG1055
MI ITEM 00375085
Available - Factory Order
$419.58each
Martin S612
MI ITEM 00370521
In stock
$116.78each
Browning YSS2025
MI ITEM 00371661
Available - Factory Order
$80.68each
Martin S2023
MI ITEM 00372871
Available - Factory Order
$42.95each
Martin S615BS 1 3/16
MI ITEM 02102762
Available - Factory Order
$223.94each
Browning NSS10H30
MI ITEM 00374768
In stock
$201.34each
Martin S1020BS 1
MI ITEM 02102688
In stock
$134.38each
Martin S2055
MI ITEM 00372881
Available - Factory Order
$93.25each
Martin S624
MI ITEM 00370557
In stock
$261.79each
Martin S1020BS 7/8
MI ITEM 02102690
Available - Factory Order
$134.38each
Browning NSS1648
MI ITEM 00369956
Available - Factory Order
$141.10each
Martin S1615
MI ITEM 00369894
Available - Factory Order
$37.22each
Boston Gear (Altra) ND21B
MI ITEM 00370066
In stock
$77.17each
Boston Gear (Altra) NB54
MI ITEM 00369961
Available - Factory Order
$127.08each
Martin S615BS 1 1/4
MI ITEM 01373617
In stock
$223.94each
Martin S814
MI ITEM 00370371
In stock
$100.62each
Browning NCG1240
MI ITEM 00375129
Available - Factory Order
$241.21each
Martin S622
MI ITEM 00372642
In stock
$223.74each
Martin S828
MI ITEM 00370408
In stock
$214.32each