Rack gears / contact angle 20 degrees / dimension L standard (RGEAMR2.5-500-N)

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MISUMI

Product Details:

Manufacturer part number: RGEAMR2.5-500-N

Brand: MISUMI

Price: 142.21 €

Delivery time: 7 Days

Technical Data:

Characteristics/Applications: Low Dust Generation / Insulation / Non-magnetic

Module (M) / Circular Pitch (P): 2.5

Length L: 505 mm

Material: [Resin] MC Nylon

Material Details: MC Nylon

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RGEAMR2.5-500-N

Drawing / Specifications
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Part Numbers
More Information
Catalog

Dimensional Drawing

Hole Machining N: No Hole Machining

Hole machining KA: Side Through Hole

Hole Machining ST: Side Tapped

Hole machining A: Back Tapped

Hole Machining Z: Side Counterbored

Module	B (Hole Pitch)	M (Coarse)	d₁	d₂	Z₁
0.5	180	—	3.5	—	—
0.8		—	3.5	—	—
1.0		M3	3.5	6.5	3.5
1.5		M4	4.5	8	4.5
2.0		M5	5.5	9.5	5.5
2.5		M5	5.5	9.5	6.5
3.0		M5	5.5	9.5	5.5

■Both Ends Machined Type

Enlarged View of End Face (Both Ends Machined Type)

Module	P Tolerance
0.5 to 2.0	－0.1 －0.3
2.5·3.0	－0.1 －0.4

[ ! ] F = L－B× (K－1)2

Metal: L Tolerance (mm)

Plastic: L Tolerance (mm)

W, H Dimension Tolerance (mm)

Accumulated Pitch Error (μm)

Module	Tolerance
0.5 to 2.0	-0.2 to -0.6
2.5 to 3.0	-0.2 to -0.8

Overall Length (L)	Tolerance
Overall Length (L)	Tolerance
50 to 100	±1.2
101 to 200	±1.4
201 to 300	±1.6
301 to 400	±1.8
401 to 500	±2.0
501 to 600	±2.2
601 to 700	±2.4
701 to 800	±2.6
801 to 900	±2.8
901 to 1000	±3.0

Standard Dimension Range (mm)		Tolerance
Over	or Less	Tolerance
0	5	0 to -0.18
6	10	0 to -0.22
11	18	0 to -0.27
19	30	0 to -0.33
31	50	0 to -0.39

Module	Nominal, Overall Length L
Module	Up to 100	101 to 300	301 to 500	501 to 1000
0.5 to 1.5	54 (76)	65 (92)	72 (101)	100 (117)
2.0 to 3.0	62 (86)	73 (102)	80 (112)	91 (128)

[ ! ] Values in ( ) are for RGEAS, RGEAM, RGEAP

[ ! ] Dimensions may change depending on temperature and humidity.

Type	Material	Surface Treatment
RGEA	EN 1.1191 Equiv.	Black Oxide
RGEAB	Free-cutting brass	-
RGEAS	EN 1.4301 Equiv.	-
RGEAM	MC Nylon (Blue)	-
RGEAP	Polyacetal (White)	-

[ ! ] Surface treatment is not applied to the holes in KA, A, ST and Z hole machining.
[ ! ] Material: MC Nylon and Polyacetal dimensions may change depending on the operating environment.
[ ! ] Flatness (warpage) accuracy is L = 500 or less: 0.2, 501 or more: 0.3.
[ ! ] This product is not hardened.

Specification Table

Part Number	—	Nominal	—	Hole Machining
RGEA1.0	—	500	—	A

Part Number		Nominal	Hole Machining	Effective Number of Teeth	L	P (Pitch)	W	H	h	K (Number of Holes)
Type	Module

RGEA RGEAB RGEAS RGEAM RGEAP	0.5	100	N (No Hole Machining) KA (Side Through Hole)	63	98.96	1.571	3	9	8.5	—
		300		192	301.59					2
		500		318	499.51					3
	0.8	100		39	98.01	2.513	4	10	9.2	—
		300		120	301.59					2
		500		198	497.63					3
	1.0	100	N (No Hole Machining) A (Back Tapped) ST (Side Tapped) Z (Side Counterbored)	30	94.25	3.142	10	12 (10)	11 (9)	—
		300		95	298.45					2
		500		159	499.51					3
		1000		318	999.02					6
RGEA RGEAS RGEAP	1.5	100		21	98.96	4.712	15	20 (15)	18.5 (13.5)	—
		300		63	296.88					2
		500		106	499.51					3
		1000		212	999.02					6
	2.0	100		15	94.25	6.283	20	25 (20)	23 (18)	—
		300		47	295.31					2
		500		79	496.37					3
		1000		159	999.02					6
	2.5	100		12	94.25	7.854	25	30 (25)	27.5 (22.5)	—
		300		38	298.45					2
		500		63	494.8					3
		1000		127	997.4					6
	3.0	100		10	94.25	9.425	30	35 (30)	32 (27)	—
		300		31	292.17					2
		500		53	499.51					3
		1000		106	999.02					6

[!] Hole drilling cannot be selected for nominal size 100. [!] H,h () is the value for EN 1.4301 Equiv..

Alterations

One End Tapped

Both Ends Tapped

Tapped Hole Dimension Change

Code

WMC

TPC

Spec.

Ordering Code MC5

Ordering Code WMC5

Changes the tapped hole dimension.
Ordering Code TPC4

	M	TPC
	M3	M4
	M4	M3 M5
	M5	M4 M6 M8

Module	M Selection
1.0	3	4
1.5 to 3.0		4	5	6

Module	M Selection
1.0	3	4
1.5 to 3.0		4	5	6

[NG] For RGEAS, M4 is not available for module 1.0.

General information - Rack Gears

Rack gear product assortment - steel rack gear - stainless steel rack gear - brass rack gear - plastic rack gear - hardened rack gear

Selection Details of Rack Gears

-Material: steel, stainless steel, brass, plastic

-Coatings: uncoated, burnished

-Heat treatment: untreated, surface curing (induction hardened)

-Module: 0.5, 0.8, 1, 1.5, 2, 2.5, 3

-Width: 3 to 30 mm

-Number of teeth: 9 to 192

-Outer diameter (round): 8 to 30 mm

-Length: 20 to 1980 mm

Description / Rack Gear Basics

The rack gear from MISUMI are fundamentally used for motion conversion. The rack gear allows converting a rotary motion into a linear motion or a linear motion into a rotary motion. A rack gear can transmit high forces due to the form-fitting gearing. In connection with a gear wheel or spur gear, a gear rack drive forms a slip-free transmission of force and prevents a slip-through. For a large number of applications, the slip-free transmission of the rack gear is an efficient transmission of force and motion. The rack gear drive also withstands high loads with a compact design. With rack gears, high speeds can also be driven in applications with low noise generation. With MISUMI, you can configure your rack gears individually in length and in other parameters.

During the transfer of motion, the teeth intertwine and largely unroll during the transfer to one another. The rack gear can be used for the transfer of motion almost over the entire length. To prevent the gear wheel from overflowing, for example, stopper bolts or stopper blocks are recommended. Since the module is standardized, it must be ensured for the construction of a rack drive that the same module is used for the rack and the gear wheel. The rack gear allows precise control by directly transmitting motion, torque and speed.

For high wear resistance and reliability, our product range also offers surface-hardened rack gears. The hardened rack gear has a harder surface of the teeth, which makes it less susceptible to wear and tear. Their long service life helps reduce production downtime. Hardened rack gears are also less susceptible to locking-related play and retain their precision in the long term. This aspect makes hardened rack gears particularly recommended for precise applications.

A rack gear drive has a low backlash. In general, the tooth flank clearance is used for assembly and thermal expansion. Like the head play, it can serve as a gap for lubricants. For very precise applications, the reverse play is not beneficial. In order to minimize this during precision applications, pre-tensioning is required. On lifting tables, the dead weight already generates a vertical pretension in the rack gear, which minimizes the reverse play. If the rack gear is aligned horizontally, a separate pretension should be used to reduce the reverse play. This can be achieved with tension springs or other exciting components, for example. When selecting a suitable rack gear, the first decision criterion is the material of the rack gear drive. The following are some advantages of the rack gear materials:

Steel rack gears

Rack gears made of steel have high strength and withstand high loads. Therefore, steel rack gears are suitable for heavy loads. The material surface can be hardened to increase wear resistance. This makes the rack gear resistant and durable. In addition, steel is very heat-resistant and is suitable for applications in which high ambient temperatures occur. One disadvantage of steel is its low corrosion resistance.

Stainless steel rack gears

Stainless steel rack gears are highly corrosion resistant, since stainless steel forms a passive layer (oxide layer). This makes them suitable for applications where higher humidity is found. Furthermore, stainless steel offers good chemical resistance. Like steel, stainless steel is temperature resistant without losing strength. High temperatures can cause discoloration (tempering colour) in stainless steel. However, this does not affect the function in any way. Similar to the steel, stainless steel is robust and has a long service life. Another advantage is that rack gears made of stainless steel have hygienic properties. Therefore, this material is often used in the pharmaceutical industry and in medical technology.

Brass rack gears

Brass rack gears are well protected against corrosion. Therefore, a brass rack gear is well suited in corrosive environments. Depending on the application, it can be advantageous that brass does not tend to spark when abrasion is applied. In addition, brass has a high strength and ductility. This allows the material to deform before it breaks. Brass rack gears have a high thermal conductivity, which allows heat to be dissipated similar to a heat sink. The perhaps most important property of the brass rack gear is its gliding property. In the case of a lubrication film dissipates, this property serves as a certain fail-safe.

Lubrication of rack gears

The lubrication of the rack gear is decisive for low-wear operation. The lubrication reduces the friction on the tooth flanks of the rack gear and the pinion, which reduces the material abrasion. In this way, proper lubrication of the rack gear increases the service life, performance and ensures long-term precision. In principle, a rack can be lubricated with grease or oil. The type of lubrication that is suitable depends on several factors such as temperature, load and speed. Grease lubrication is often used for high loads and torques, while oil lubrication is used for high speeds. Lubricant manufacturers offer a suitable lubricant for almost all load cases. Before re-lubricating, the tooth drive should be thoroughly cleaned to prevent damage to the tooth flanks or teeth from contamination. Depending on the application, the lubricant can be sprayed, brushed, or sprayed onto the rack gear. The lubrication intervals must be selected depending on the application and the lubricant used. It is always recommended to adjust the lubrication intervals to the given circumstances.

Application examples - Rack Gears

Application example: rack gear - round rack gear - rack gear with spur gear - rack gear with pinion - rack gear with handle

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

Industrial applications

3D printer industry

Automotive industry

Pharmaceutical industry

Packaging industry

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Part Number
RGEAMR2.5-500-N

Part Number	Standard Unit Price	Minimum order quantity	Volume Discount	Standard Shipping Days ?	RoHS	Characteristics/Applications	Module (M) / Circular Pitch (P)	Length L (mm)	Material	Material Details	Surface Treatment	Length (nominal)	Number of Effective Teeth (teeth)	Tooth Width W (or D) (mm)	End Face Machining	Rack Height (mm)	Hole Machining
	142.21 €	1		7 Days	10	Low Dust Generation / Insulation / Non-magnetic	2.5	505	[Resin] MC Nylon	MC Nylon	Not Provided	500	63	25	Economy Type	30	N (No Hole Machining)

Specifications/Overview

How to Connect Rack Gears (Both Ends Machined Type)
MISUMI Rack Gears (Both Ends Machined Type) are end machined with negative pitch tolerance in length.
When connecting the racks, use a piece of rack (rack gear in the same module) as a spacer jig as shown in the right side figure to properly adjust the pitch.

Rack Gear Flatness Measurement Method
Measure the gap with the rack gear teeth facing up and both ends grounded.
Flatness Tolerance
0.2 for L = 500 or less
0.3 for L = 501 or more

Products homepage

Basic information

Tooth Type	Standard	Environmentally friendly	RoHS Compliant (10 Substances)	Shape	Rack Gears
Heat Treatment	Not Provided	Ground Tooth	Not Provided

This page is Rack gears / contact angle 20 degrees / dimension L standard, part number RGEAMR2.5-500-N.
You can find the detail information about specifications and dimensions on part number RGEAMR2.5-500-N.

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Basic Attributes

Characteristics/Applications
Low Dust Generation

Corrosion Resistant / Chemical Resistant

Insulation

Non-magnetic

Heat Resistance

Not Applicable
Clear
Type
- RGEA
- RGEAB
- RGEAM
- RGEAMR
- RGEAP
- RGEAR
- RGEAS
Clear
Module (M) / Circular Pitch (P)
0.5

0.8

1

1.5

2

2.5

3
Clear
Length L(mm)
94.25

98

98.01

98.96

100

101

292.17

295.31

296.88

298.45

301.59

303

494.8

496.37

497.63

499.51

505

997.4

997.45

999.02

999.03
Clear
Material
- General Steel Material
  - EN 1.1191 Equiv.
- Stainless Steel
  - EN 1.4301 Equiv.
- Resin
  - MC Nylon
  - Polyacetal
- Brass
  - Free-Cutting Brass Rod
Clear
Material Details
- EN 1.1191 Equiv.
- EN 1.4301 Equiv.
- Free-Cutting Brass
- MC Nylon
- Polyacetal
Clear
Surface Treatment
- Not Provided
- Black Oxide
Clear
Length (nominal)
1,000

100

300

500
Clear
Number of Effective Teeth(teeth)
9

10

11

12

14

15

20

21

29

30

31

37

38

39

46

47

52

53

62

63

79

94

95

105

106

120

127

159

192

198

212

318
Clear
Tooth Width W (or D)(mm)
3

4

10

15

20

25

30
Clear
End Face Machining
- Economy Type
- Provided
  - Both Ends Machined Type
Clear
Hole Machining
- A (Back Tapped)
- KA (Side Through Hole)
- N (No Hole Machining)
- ST (Side Tapped)
- Z (Side Counterbored)
Clear
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- 3D
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7 Days or Less

9 Days or Less
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Optional Attributes

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

Frequently Asked Questions (FAQ)

Question:
What are rack gears for?: Answer:
Rack gears are machine elements that convert rotary motion into linear motion. This can also be done in reverse order. The rack gear can transmit high forces directly and without slip with a gear wheel.
Question:
What materials are used for rack gears?: Answer:
MISUMI’s rack gears are made of steel, stainless steel (stainless steel), brass and plastic. Each material offers different properties that must be selected to suit a wide range of requirements.
Question:
What types of rack gears do you offer?: Answer:
There are straight-toothed rack gears and slanted rack gears. The rack gears with straight gearing are often used to implement linear motion. The obliquely toothed rack gears are often used for conversion into a rotation.
Question:
How are rack gears lubricated?: Answer:
In most cases, a rack gear is lubricated with grease or oil. The appropriate lubricant should be used depending on the application (heavy loads, high temperature, high speed). For high-speed applications, oil is usually used. A grease is often used in heavy load applications.
Question:
What are the advantages of rack gears?: Answer:
Rack gears withstand high loads and have a long service life. At the same time, rack gears are very precise and easy to assemble.

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Variation of this product

Part Number
RGEA0.5-500-KA
RGEA0.5-500-N
RGEA0.8-100-N
RGEAMR3.0-500-N
RGEAP0.5-100-N
RGEAP0.5-300-KA

Standard Unit Price	Minimum order quantity	Volume Discount	Standard Shipping Days ?	RoHS	Characteristics/Applications	Module (M) / Circular Pitch (P)	Length L (mm)	Material	Material Details	Surface Treatment	Length (nominal)	Number of Effective Teeth (teeth)	Tooth Width W (or D) (mm)	End Face Machining	Rack Height (mm)	Hole Machining
67.43 €	1	Available	7 Days	-	Not Applicable	0.5	499.51	[General Steel Material] EN 1.1191 Equiv.	EN 1.1191 Equiv.	Black Oxide	500	318	3	[Provided] Both Ends Machined Type	9	KA (Side Through Hole)
55.42 €	1	Available	7 Days	-	Not Applicable	0.5	499.51	[General Steel Material] EN 1.1191 Equiv.	EN 1.1191 Equiv.	Black Oxide	500	318	3	[Provided] Both Ends Machined Type	9	N (No Hole Machining)
19.71 €	1	Available	7 Days	-	Not Applicable	0.8	98.01	[General Steel Material] EN 1.1191 Equiv.	EN 1.1191 Equiv.	Black Oxide	100	39	4	[Provided] Both Ends Machined Type	10	N (No Hole Machining)
170.43 €	1		7 Days	10	Low Dust Generation / Non-magnetic / Insulation	3	505	[Resin] MC Nylon	MC Nylon	Not Provided	500	52	30	Economy Type	35	N (No Hole Machining)
20.58 €	1	Available	7 Days	-	Low Dust Generation / Non-magnetic / Insulation	0.5	98.96	[Resin] Polyacetal	Polyacetal	Not Provided	100	63	3	[Provided] Both Ends Machined Type	9	N (No Hole Machining)
36.42 €	1	Available	7 Days	-	Low Dust Generation / Non-magnetic / Insulation	0.5	301.59	[Resin] Polyacetal	Polyacetal	Not Provided	300	192	3	[Provided] Both Ends Machined Type	9	KA (Side Through Hole)