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Spur gears / contact angle 20 degrees / module 2.5 (Part Numbers - CAD Download)

Spur gears / contact angle 20 degrees / module 2.5
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Cylinder stroke with rack and gear mechanism
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Back to the Category Spur Gears

Technical Drawing - Spur Gears

Spur Gears/Pressure Angle 20Deg./Module 2.5:Related Image
Open the technical drawing in the new window

 

Available dimensions and tolerances can be found under the tab More Information.

Basic Properties (e.g., material, hardness, coating, tolerance) - Spur Gears

TypeMaterialSurface TreatmentAccessory
Straight BoreStraight Bore + TapKeyway, Keyway + Tap
GEAHBGEABGEAKBEN 1.1191 Equiv.-Set Screw
(EN 1.7220 Equiv., Black Oxide)
GEAHBBGEABBGEAKBBBlack Oxide
Set Screw is not included in Un-tapped Type products.

Further specifications can be found under the tab More Information.

Composition of a Product Code - Spur Gears

Part Number-Number
of Teeth		-B-Gears
Shape		-P
GEAB2.5
GEAKB2.5		-
-		15
30		-
-		25
25		-
-		B
A		-
-		8
10N

Alterations - Spur Gears

Spur Gears/Pressure Angle 20Deg./Module 2.5:Related Image

General Information - Spur Gears

Spur gears - front gear with through hole - spur gear with spring pin - spur gear made of brass - brass pinion - plastic - spur gear with ball bearing

 

Selection details of spur gears

- Material: steel, stainless steel, sintered steel, nylon, polyacetal, brass, aluminum, cast iron

- Coatings: burnished, nickel-plated

- Heat treatment: induction hardened

- Shaft diameter tolerances: H7, H8

- Tooth flank clearance: N5, N7, N8, N9, N12

- Module: 0.3, 0.5, 0.75, 0.8, 1, 1.25, 1.5, 2, 2.5, 3, 4, 4.5, 5, 6, 8, 10, 15, 20

- Pressure angle: 20°

- Shaft diameter: 2 mm to 50 mm

- Number of teeth: 8 to 200

- Tooth width: 2 mm to 90 mm

 

Description/Basics

The spur gears offered are generally machine elements that serve the non-slip transmission of force, movement transmission or movement change. The teeth of the cylinder wheels grip each other during transmission and largely roll over the tooth flanks. The tooth shape of the spur gear is convexly shaped in the shaped tooth system. At the beginning of the intervention, a rolling resistance acts on the tooth flank, which becomes a sliding friction in the course of the rotation.

A combination of gear wheels and rack gears is useful in the construction of rack gear. This allows motor rotary motion or other rotary motion to be converted into linear motion. rack gear boxes are theoretically possible in an endless assembly. Limits here only set the length of the rack gears for the rack gear drive.

Gear wheels with straight gearing are particularly suitable for the construction of gearboxes. The advantage of straight gearing as opposed to helical gears, is the possibility of transmitting a higher torque. It should be noted that with increasing speed within the transmission ratio or reduction, the torque to be transmitted decreases.

When designing spur gear pairs, the ratio of the gear ratio (number of teeth) and the module of the respective gear wheels must be observed.
The backlash is another important factor that must be considered during construction. Reverse play is understood as the result of the play that the change in the direction of rotation of a single gear wheel pair between the teeth. The risk of reverse play can be reduced if either the diameter or the number of teeth of the cogwheel pairing do not deviate too much from one another. If high wear is to be expected due to the pairing of gears, the MISUMI online shop offers gears with a hardened key-type.

For applications with the same rotational direction, it is possible to use an intermediate gear with integrated bearing on a cantilever shaft. The bearing number used can be found under the tab More Information. An overview of tolerances and permissible radial bearing deviations can be found in the following PDF.

In addition to gear wheels, MISUMI also offers suitable rotary shafts for the construction of a transmission. The straight front wheels can be assembled on these and secured with a set screw or machine keys (key with adjusting screw). This PDF provides an overview of the configurable mountings for the shaft rotation and keyway tolerances.
The continuous adjusting of a spur gear can be realized, among other things, by means of a clamping sleeve. The MISUMI online shop offers spur gears with clamping sleeve. Alternatively, we also offer individual keyless bushing that you can customize to your needs.

 

Application Examples - Spur Gears

Application example: workpiece transport - spur gear - rack gear - roller bearings - workpiece

Application example - spur gear with rack gear
(1) Spur gear, (2) Clamping knobs, (3) Rack gear

Application example: rack gear - spur gear with rack gear - handle - rotary handle

Application example - spur gear
(1) Spur gear, (2) Workpiece, (3) Rollers

 

Industrial Applications

3D printer industry
Automotive industry
Pharmaceutical industry
Packaging industry

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Part Number
GEAHBG2.5-63-25-A-[25-60/1]
GEAHBG2.5-63-25-B-[25-60/1]
GEAHBG2.5-66-25-A-[25-60/1]
GEAHBG2.5-66-25-B-[25-60/1]
GEAHBG2.5-69-25-A-[25-60/1]
GEAHBG2.5-69-25-B-[25-60/1]
GEAHBG2.5-76-25-A-[25-60/1]
GEAHBG2.5-76-25-B-[25-60/1]
GEAHBG2.5-77-25-A-[25-60/1]
GEAHBG2.5-77-25-B-[25-60/1]
GEAHBG2.5-78-25-A-[25-60/1]
GEAHBG2.5-78-25-B-[25-60/1]
GEAKB2.5-12-25-A-8N
GEAKB2.5-12-25-B-8N
GEAKB2.5-13-25-A-8N
GEAKB2.5-13-25-B-8N
GEAKB2.5-14-25-A-8N
GEAKB2.5-14-25-A-10K
GEAKB2.5-14-25-A-10N
GEAKB2.5-14-25-A-11N
GEAKB2.5-14-25-A-12N
GEAKB2.5-14-25-B-8N
GEAKB2.5-14-25-B-10K
GEAKB2.5-14-25-B-10N
GEAKB2.5-14-25-B-11N
GEAKB2.5-14-25-B-12N
GEAKB2.5-15-25-A-8N
GEAKB2.5-15-25-A-10K
GEAKB2.5-15-25-A-10N
GEAKB2.5-15-25-A-11N
GEAKB2.5-15-25-A-12N
GEAKB2.5-15-25-A-13N
GEAKB2.5-15-25-A-14N
GEAKB2.5-15-25-A-15N
GEAKB2.5-15-25-B-8N
GEAKB2.5-15-25-B-10K
GEAKB2.5-15-25-B-10N
GEAKB2.5-15-25-B-11N
GEAKB2.5-15-25-B-12N
GEAKB2.5-15-25-B-13N
GEAKB2.5-15-25-B-14N
GEAKB2.5-15-25-B-15N
GEAKB2.5-16-25-A-8N
GEAKB2.5-16-25-A-10K
GEAKB2.5-16-25-A-10N
GEAKB2.5-16-25-A-11N
GEAKB2.5-16-25-A-12N
GEAKB2.5-16-25-A-13N
GEAKB2.5-16-25-A-14N
GEAKB2.5-16-25-A-15N
GEAKB2.5-16-25-A-16N
GEAKB2.5-16-25-A-17N
GEAKB2.5-16-25-B-8N
GEAKB2.5-16-25-B-10K
GEAKB2.5-16-25-B-10N
GEAKB2.5-16-25-B-11N
GEAKB2.5-16-25-B-12N
GEAKB2.5-16-25-B-13N
GEAKB2.5-16-25-B-14N
GEAKB2.5-16-25-B-15N
Part Number
Standard Unit Price
Minimum order quantityVolume Discount
Standard
Shipping Days
?
RoHSNumber of Teeth
(Teeth) 		Material (Details) Shape Surface Treatment Shaft Bore Dia.
(Ø) 		Hole Shape

-

1 7 Days -63[General Steel Material] SCM440Shape AElectroless Nickel Plating25 ～ 60Round Hole

-

1 7 Days -63[General Steel Material] SCM440Shape BElectroless Nickel Plating25 ～ 60Round Hole

-

1 7 Days -66[General Steel Material] SCM440Shape AElectroless Nickel Plating25 ～ 60Round Hole

-

1 7 Days -66[General Steel Material] SCM440Shape BElectroless Nickel Plating25 ～ 60Round Hole

-

1 7 Days -69[General Steel Material] SCM440Shape AElectroless Nickel Plating25 ～ 60Round Hole

-

1 7 Days -69[General Steel Material] SCM440Shape BElectroless Nickel Plating25 ～ 60Round Hole

-

1 7 Days -76[General Steel Material] SCM440Shape AElectroless Nickel Plating25 ～ 60Round Hole

-

1 7 Days -76[General Steel Material] SCM440Shape BElectroless Nickel Plating25 ～ 60Round Hole

-

1 7 Days -77[General Steel Material] SCM440Shape AElectroless Nickel Plating25 ～ 60Round Hole

-

1 7 Days -77[General Steel Material] SCM440Shape BElectroless Nickel Plating25 ～ 60Round Hole

-

1 7 Days -78[General Steel Material] SCM440Shape AElectroless Nickel Plating25 ～ 60Round Hole

-

1 7 Days -78[General Steel Material] SCM440Shape BElectroless Nickel Plating25 ～ 60Round Hole

-

1 8 Days 1012General Steel MaterialShape ANot Provided8Keyway

-

1 8 Days 1012General Steel MaterialShape BNot Provided8Keyway Hole + Tap

-

1 7 Days -13[General Steel Material] SCM440-Not Provided8Keyway Hole

-

1 7 Days -13[General Steel Material] SCM440-Not Provided8Keyway Hole + Tap

-

1 8 Days 1014General Steel MaterialShape ANot Provided8Keyway

-

1 8 Days 1014General Steel MaterialShape ANot Provided10Keyway

-

1 8 Days 1014General Steel MaterialShape ANot Provided10Keyway

-

1 8 Days 1014General Steel MaterialShape ANot Provided11Keyway

-

1 8 Days 1014General Steel MaterialShape ANot Provided12Keyway

-

1 8 Days 1014General Steel MaterialShape BNot Provided8Keyway Hole + Tap

-

1 8 Days 1014General Steel MaterialShape BNot Provided10Keyway Hole + Tap

-

1 8 Days 1014General Steel MaterialShape BNot Provided10Keyway Hole + Tap

-

1 8 Days 1014General Steel MaterialShape BNot Provided11Keyway Hole + Tap

-

1 8 Days 1014General Steel MaterialShape BNot Provided12Keyway Hole + Tap

-

1 8 Days 1015General Steel MaterialShape ANot Provided8Keyway

-

1 8 Days 1015General Steel MaterialShape ANot Provided10Keyway

-

1 8 Days 1015General Steel MaterialShape ANot Provided10Keyway

-

1 8 Days 1015General Steel MaterialShape ANot Provided11Keyway

-

1 8 Days 1015General Steel MaterialShape ANot Provided12Keyway

-

1 8 Days 1015General Steel MaterialShape ANot Provided13Keyway

-

1 8 Days 1015General Steel MaterialShape ANot Provided14Keyway

-

1 8 Days 1015General Steel MaterialShape ANot Provided15Keyway

-

1 8 Days 1015General Steel MaterialShape BNot Provided8Keyway Hole + Tap

-

1 8 Days 1015General Steel MaterialShape BNot Provided10Keyway Hole + Tap

-

1 8 Days 1015General Steel MaterialShape BNot Provided10Keyway Hole + Tap

-

1 8 Days 1015General Steel MaterialShape BNot Provided11Keyway Hole + Tap

-

1 8 Days 1015General Steel MaterialShape BNot Provided12Keyway Hole + Tap

-

1 8 Days 1015General Steel MaterialShape BNot Provided13Keyway Hole + Tap

-

1 8 Days 1015General Steel MaterialShape BNot Provided14Keyway Hole + Tap

-

1 8 Days 1015General Steel MaterialShape BNot Provided15Keyway Hole + Tap

-

1 8 Days 1016General Steel MaterialShape ANot Provided8Keyway

-

1 8 Days 1016General Steel MaterialShape ANot Provided10Keyway

-

1 8 Days 1016General Steel MaterialShape ANot Provided10Keyway

-

1 8 Days 1016General Steel MaterialShape ANot Provided11Keyway

-

1 8 Days 1016General Steel MaterialShape ANot Provided12Keyway

-

1 8 Days 1016General Steel MaterialShape ANot Provided13Keyway

-

1 8 Days 1016General Steel MaterialShape ANot Provided14Keyway

-

1 8 Days 1016General Steel MaterialShape ANot Provided15Keyway

-

1 8 Days 1016General Steel MaterialShape ANot Provided16Keyway

-

1 8 Days 1016General Steel MaterialShape ANot Provided17Keyway

-

1 8 Days 1016General Steel MaterialShape BNot Provided8Keyway Hole + Tap

-

1 8 Days 1016General Steel MaterialShape BNot Provided10Keyway Hole + Tap

-

1 8 Days 1016General Steel MaterialShape BNot Provided10Keyway Hole + Tap

-

1 8 Days 1016General Steel MaterialShape BNot Provided11Keyway Hole + Tap

-

1 8 Days 1016General Steel MaterialShape BNot Provided12Keyway Hole + Tap

-

1 8 Days 1016General Steel MaterialShape BNot Provided13Keyway Hole + Tap

-

1 8 Days 1016General Steel MaterialShape BNot Provided14Keyway Hole + Tap

-

1 8 Days 1016General Steel MaterialShape BNot Provided15Keyway Hole + Tap

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Back to the Category Spur Gears

Technical Drawing - Spur Gears

Spur Gears/Pressure Angle 20Deg./Module 2.5:Related Image
Open the technical drawing in the new window

Specification Tables - Spur Gears

For alterations on tooth width and hub dimensions, see Here.
Part NumberNumber of TeethBGear ShapeShaft Bore Dia. PH7 (1mm Increment)d Reference Dia.D
Tip Dia.		G Root Dia.HLℓ1ℓ2M (Coarse)*1. Allowable Transmission Force
(N • m)
Bending Strength
TypeModuleStraight Bore Straight Bore + TapKeyway, Keyway + TapEN 1.1191 Equiv.
Straight Bore
(Shape A, Shape B)
GEAHB
GEAHBB


Straight Bore + Tap
(Shape B)
GEAB
GEABB


Keyway
(Shape A)
Keyway + Tap
(Shape B)
GEAKB
GEAKBB		2.5 1225A

B		8~138N303523.752337126M538.58
148~158N~12N354028.75254116849.96
158~208N~15N37.542.531.253055.96
168~228N~17N404533.753261.98
178~248N~19N42.547.536.253568.13
188~268N~22N455038.753874.36
198~2747.552.541.253980.60
208~288N~23N505543.754087.09
218~298N~25N52.557.546.254293.50
228~308N~27N556048.7544100.13
238~328N~28N57.562.551.2546106.58
248~338N~30N606553.7548113.19
258~358N~31N62.567.556.2550M6119.98
268~388N~35N657058.7555126.94
278~428N~38N67.572.561.2560133.57
28707563.75140.86
298~438N~39N72.577.566.2562147.18
308~458N~41N758068.7565154.16
328~498N~45N808573.7570167.17
3410~4910N~45N859078.75182.65
3587.592.581.25189.48
3610~5210N~48N909583.7575195.56
389510088.75210.35
4010~5610N~50N10010593.7580223.66
4210511098.75238.12
44110115103.75252.85
45112.5117.5106.25260.32
46115120108.75267.86
4810~59120125113.7585281.94
5012~5912N~50N125130118.75296.17
5215~5915N~50N130135123.75310.53
54135140128.75325.04
55137.5142.5131.25333.08
56140145133.75341.19
58145150138.75354.50
6025~5925N~50N150155143.75369.44
62155160148.75382.84
64160165153.75398.01
65162.5167.5156.25404.75
68170175163.75428.78
70175180168.75442.41
72180185173.75456.04
75187.5192.5181.25478.65
80200205193.75396.36
Shaft bore diameter 9N is not available for Keyway Bore + Tap.
Specify 10K as the P dimension if keyway width of 4.0mm (height 1.8mm) for Keyway + Tap with shaft bore diameter of 10 is desired. >>P.1498
*1 Allowable Transmission Forces in the table are reference values calculated with prescribed conditions. For conditions, see >> P. 1498.

Alterations - Spur Gears

Spur Gears/Pressure Angle 20Deg./Module 2.5:Related Image
 

Basic information

Heat Treatment (Details) Not Provided Ground Tooth Not Provided Backlash Provided
Bearing Not Provided Tooth Width B(mm) 25 Shaft Bore Tolerance H7
Precision(Old JIS) JIS B 1702 (Class 4)

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4,376Suggestion of an applicable part number.

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Basic Attributes

  • Number of Teeth(Teeth)

    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21
    • 22
    • 23
    • 24
    • 25
    • 26
    • 27
    • 28
    • 29
    • 30
    • 32
    • 33
    • 34
    • 35
    • 36
    • 38
    • 39
    • 40
    • 42
    • 44
    • 45
    • 46
    • 48
    • 49
    • 50
    • 51
    • 52
    • 54
    • 55
    • 56
    • 57
    • 58
    • 60
    • 62
    • 63
    • 64
    • 65
    • 66
    • 68
    • 69
    • 70
    • 72
    • 75
    • 76
    • 77
    • 78
    • 80

    Clear

  • Material (Details)

    • General Steel Material
      • SCM440

    Clear

  • Shape

    • Shape A
    • Shape B

    Clear

  • Surface Treatment

    • Not Provided
    • Black Oxide
    • Electroless Nickel Plating

    Clear

  • Shaft Bore Dia.(Ø)

    • 8
    • 10
    • 11
    • 12
    • 13
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21
    • 22
    • 23
    • 24
    • 25
    • 26
    • 27
    • 28
    • 29
    • 30
    • 31
    • 32
    • 33
    • 34
    • 35
    • 36
    • 37
    • 38
    • 39
    • 40
    • 41
    • 42
    • 43
    • 44
    • 45
    • 46
    • 47
    • 48
    • 49
    • 50

     [8-60/1Ø Unit(s)]

    Clear

  • Hole Shape

    • Keyway
    • Keyway Hole
    • Keyway Hole + Tap
    • Round Hole
    • Round Hole + Tap

    Clear

  • Type

    • GEAB2.5
    • GEABB2.5
    • GEABG2.5
    • GEAHB2.5
    • GEAHBB2.5
    • GEAHBG2.5
    • GEAKB2.5
    • GEAKBB2.5
    • GEAKBG2.5

    Clear

  • Filter by CAD data type

    • 2D
    • 3D

    Clear

Filter by standard shipping days

    • All
    • 7 Days or Less
    • 8 Days or Less

    Reset

Optional Attributes

Frequently Asked Questions (FAQ)

Question:

Can different modules be combined with each other?
Answer:

Since the module describes the division of the teeth along the pitch circle diameter, various modules cannot be combined into one pair of gears.
Question:

What is involute gearing?
Answer:

Evolved gearing is understood to be the convex production of a tooth flank. The sliding friction along the tooth flank can thus be minimized. This also reduces wear and tear.
Question:

What is the pressure angle?
Answer:

The pressure angle is defined as the angle of the highest drive force between two gears. A combination of different pressure angles is not recommended, since increased wear is to be expected.
Question:

Is the position of the keyway to the key-type specified?
Answer:

The keyway has no specified position reference to the tooth base or the head surface of the sprocket.
Question:

What is the reverse clearance?
Answer:

The reverse play arises at the moment of the direction of rotation of a spur gear pairing is changed. It describes the gap between the gear flanks of each tooth in engagement.

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