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"Easy" Gear Selection Screen

- Choose a gear by pitch, # of teeth, or bore size.
- 2D/3D Drawings Available
- PDF Catalog Available
- Strength Calculation Available

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KHK Stock Gears for Sale

KHK Stock Gears for Sale

Just as the name suggests, stock gears are defined as gears which are always stocked.

When the gears of machines in operation break, the person in charge of the maintenance of the machines can immediately replace them if gears of the same shape are in stock at a supplier’s base. Also, for the machine designers, when designing machines they can check the specifications of already designed stock gears and adopt stock gears as the gears to use when the specifications of said stock gears match the needs of the machine they are designing. In such cases there is no need for the machine designers to design new gears, and furthermore it is possible to procure the small amount of gears needed to produce a prototype of the machine quickly and affordably.

When considering the convenience of the user, there are a variety of types of stocked gears including spur gears, bevel gears, helical gears, worm gears, and racks as well as a wide variety of needs such as the pitch of gear teeth, the size of gears, materials such as metal or plastic, gear grades (ISO, JIS, DIN, AGMA, etc.), whether teeth face are polished, and whether the gears are tempered.

KHK’s stock gears are largely composed of gears called metric gears, and metric gears make use of a standard called module in the pitch of the gear teeth.

How to Buy
button of gear selector

SPUR GEARS

spur gears

Module : 0.5-10
Hardened / Non-hardened
Ground / Non-ground

There are wide variations among spur gear in terms of number of teeth, size of module (tooth pitch), accuracy depending on polishing, hardness depending on quenching, material, with or without shaft, fastening method with shaft, and such.

HELICAL GEARS

helical gears

Module : 1-3
Hardened / Non-hardened
Ground / Non-ground

There are wide variations among helical gear in terms of helix angle, twisting direction, reference section of gear, and such. Just like spur gear, there are wide variations in terms of number of teeth, module, material, presence or absence of polishing and quenching.

INTERNAL GEARS

INTERNAL GEARS

Module : 0.5-3
Non-hardened
Non-ground

Internal gear is the gear which has teeth inside a cylinder or cone and frequently used for planetary gear mechanism. Internal gear always meshes with external gear, and internal gear is always rack wheel while external gear is pinion. In such case, involute interference, trochoid interference, or triming may occur depending on number of teeth of meshing gear.

GEAR RACK

GEAR RACK

Module : 0.5-10
Hardened / Non-hardened
Ground / Non-ground

Gear rack is rod-like gear to turn revolving motion into linear motion, and can be considered as pitch cylinder of rack wheel becomes infinite. Gear rack is used for machine tool and steering system of automotive. Helical rack is the gear rack whose tooth trace is diagonal.

MITER GEARS

MITER GEARS

Module : 0.5-10
Hardened / Non-hardened
Ground / Non-ground

Miter gear is a type of bevel gear, composed of a pair of bevel gears which have same teeth number and its pitch surface angle is 45 degree. Just like bevel gear, there are straight miter gear with straight tooth trace and spiral miter gear with twisted tooth trace. In addition, there is special miter gear called angular miter gears whose shaft angle is not 90 degree.

BEVEL GEARS

BEVEL GEARS

Module : 0.5-8
Hardened / Non-hardened
Ground / Non-ground

Bevel gear is conical gear to transmit motion between intersecting axes (two axes intersecting at one point) and categorized into "straight bevel gear" with straight tooth trace and "spiral bevel gear" with twisted tooth trace.

SCREW GEARS

SCREW GEARS

Module : 1-4
Non-hardened
Non-ground

Screw gear is a type of helical gear (cylindrical gear) used between skewed axes, which neither intersect nor be parallel. Screw gear is unsuitable for high-load operation and also needs enough lubrication because it transmits motion and rotation by sliding.

WORM GEAR

WORM GEAR

Module : 0.5-6
Hardened / Non-hardened
Ground / Non-ground

Worm gear is a pair of small gears to gain large reduction ratio with skewed axis. Among the pair, the gear with less and screw-shaped teeth is called worm while the cylindrical gear with more tooth is called worm wheel.

Related links :
Types of Gears - A detailed description of Types of Gears
J Series - A detailed description of J Series
Gear Promotion - A detailed description of Gear Promotion
Product Specification Changes
库存齿轮 - 中文页

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