What are oil free bushings and what are their features?

Plain bearings where the body of the bushing is saturated with lubricant and can be used 'without oil' or 'with a reduced oil supply'. Oil free bushings have the following features: 1. Low maintenance frequency; 2. Suitable for low speed and heavy load situations, compared with ball linear bearings; 3. Can also be used under harsh conditions of high temperature and low temperature; 4. Thinner and space saving, compared with linear bearings; 5. Can be used for both linear and rotational motions.

What are the materials and features of MISUMI oil free bushings?

MISUMI oil free bushings are available in 5 types, i.e. copper alloy, bronze casting, dry, resin, and casting. Copper alloy (metal type), excellent resistance to high temperature, chemicals and shock, suitable for heavy duty and low speed operation. Bronze casting (metal type) with excellent sinter resistance, enabling slight movements, suitable for low load and high speed operation. Dry type (composite layer type), high temperature resistant, suitable for heavy duty and low speed operation, thin-walled and compact. Resin (resin type), high temperature and chemical resistant (tetrafluoroethylene resin), complying with food sanitation law, suitable for low load and low speed operation. Castings (metal type), suitable for medium load and low speed operation.

Please note that the MISUMI India offices and warehouses will remain closed from Oct 31st to Nov 3rd due to the Diwali festival.
Please note that the MISUMI Pune office and warehouse will be closed on November 20th due to the state election.
Notice of End of Sales for Economy Series Pneumatic Equipment Category. More information.

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E-MUSZ20-20

type Inner Dia. d Outer Dia. D Overall Length L Accessories CAD Days to Ship

Specification/Dimensions

type
- E-MUGZ
- E-MUKZ
- E-MUSZ
Clear
Inner Dia. d(Ø)
6

8

10

12

13

15

16

18

20

25

30

35

40

50
Clear
Outer Dia. D(Ø)
10

12

14

16

18

19

21

22

24

28

33

38

44

50

62
Clear
Overall Length L(mm)
10

12

14

15

20

25

30

35

40

45

50

60
Clear
Accessories
- Flat Head Bolts
- Low Head Bolt
- Not Provided
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

Same day
Clear

Specify Alterations

Oil Free Bushings Copper Alloy Thrust Type (E-MUSZ20-20)

Volume Discount

Check FAQ of this product (2 items)

Brand :

MiSUMi Economy

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Product Description

- Oil Free Bushings Copper Alloy Thrust Type, E-MUGZ / E-MUKZ series from MISUMI.
- Recommended mating shaft for I.D. of Copper oil-free bushing are d8: General use (High Load), e7: General use (Light Load), f8: High precision use, g6: High precision use (Intermittent operation).
- The Copper oil-free bushing E-MUGZ / E-MUKZ series is made of High tensile brass alloy with solid lubricant embedded.
- It is recommended to fix the bushing with anti-rotation screw.
- Accessories: Low head hexagon socket head screws 2 to 4 pcs.

Dimensional Drawing of Oil Free Bushings

Oil Free Bushings Flange Integrated Type Embedded Flanged Type Center Flanged Type: Related Images

Specification Table of Oil Free Bushings

Follow the selection procedure of Oil Free Bushings

～

to select the type and parameters before ordering.

Part Number of Oil Free Bushings (Type of Oil Free Bushings·d)	-	L
E-MUGZ	-	20

Part Number of Oil Free Bushings			L										D_r6		H	t	Diameter of holder (recommended size)
Type of Oil Free Bushings	d_E7		L										D_r6		H	t	Reference dimension	Tolerance (H7)
Standard Type E-MUGZ	6	+0.032 +0.020		12									12	+0.034 +0.023	22	3	12	+0.018 0
	8	+0.040 +0.025	10			15							14		25		14
	10	+0.040 +0.025	10	12		15	20						16		25		16
	12	+0.050 +0.032	10	12		15	20	25					18		30		18
	13			12		15	20						19	+0.041 +0.028	30		19	+0.021 0
	15			12		15	20						21		35		21
	16					15		25					22		35		22
	18				14		20						24		40		24
	20	+0.061 +0.040			14		20	25	30	40			28		45	5	28
	25				14		20	25	30	40			33	+0.050 +0.034	50		33	+0.025 0
	30						20		30	40			38		55		38
	40	+0.075 +0.050							30		50		50		70	7	50
	50	+0.075 +0.050								40		60	62	+0.060 +0.041	90	8	62	+0.030 0

Part Number of Oil Free Bushings			L									D_m6		MPSZ							Diameter of holder (recommended size)
Part Number of Oil Free Bushings														H	Mounting Hole					t	Diameter of holder (recommended size)
Type of Oil Free Bushings	d_F7													H	P.C.D	d1	d2	h	Flat Head Bolts	t	Reference dimension	Tolerance (H7)
Flat Head Bolt Hole Type E-MUSZ	6	+0.022 +0.010	10	12								10	+0.015 +0.006	25	15	8.5	3.5	2.5	M3	3	10	+0.015 0
	8	+0.028 +0.013		12								12	+0.018 +0.007	28	18						12	+0.018 0
	10	+0.028 +0.013			15							14		30	20						14
	12	+0.034 +0.016		12	15	20						18		40	28						18
	15			12	15							21	+0.021 +0.008	50	35						21	+0.021 +0
	16			12	15	20						22									22
	18					20						24									24
	20	+0.041 +0.020				20		30		40		28				13	6	3.5	M5	5	28
	25					20	25	30		40		33	+0.025 +0.009	55	40						33	+0.025 0
	30						25	30		40		38		60	45						38
	35	+0.050 +0.025				20	25	30				44		70	52						44
	40							30	35		45	50		80	60	16	7	4.5	M6	7	50
	50							30	35			62	+0.030 +0.011	100	75	16	7	4.5	M6	8	62	+0.030 0

Part Number			L									D_m6		MPKZ							Diameter of holder (recommended size)
Part Number														H	Mounting Hole				Accessories Low head hexagon socket head screws	t	Diameter of holder (recommended size)
Type	d_F7													H	P.C.D	d1	d2	h	Accessories Low head hexagon socket head screws	t	Reference dimension	Tolerance (H7)
Low Head Bolt Hole Type E-MUKZ	6	+0.022 +0.010	10	12								10	+0.015 +0.006	25	17	6	3.5	2.2	M3-10×2 pcs	4	10	+0.015 0
	8	+0.028 +0.013		12								12	+0.018 +0.007	27	19						12	+0.018 0
	10	+0.028 +0.013			15							14		29	21						14
	12	+0.034 +0.016		12	15	20						18		36	26	7.5	4.5	3	M4-12×2 pcs	5	18
	15					20						21	+0.021 +0.008	39	29				M4-12×4 pcs		21	+0.021 +0
	16			12	15							22		40	30				M4-12×4 pcs		22
	20	+0.041 +0.020					25	30		40		28		49	38	9	5.5	3.7	M5-16×4 pcs	6	28
	25						25	30		40		33	+0.025 +0.009	54	43	9	5.5	3.7	M5-16×4 pcs	6	33	+0.025 0
	30					20	25	30				38		63	50	11	6.6	4.2	M6-20×4 pcs	8	38
	35	+0.050 +0.025				20		30				44		69	56	11	6.6	4.2	M6-20×4 pcs	8	44
	40						25	30		40	45	50		82	66	14	9	5.2	M8-25×4 pcs	10	50
	50							30	35		45	62	+0.030 +0.011	94	78	14	9	5.2	M8-25×4 pcs	10	62	+0.030 0

[ ! ]Precautions for use of Oil Free Bushings
·Recommended matching shaft for I.D. F7 type　d8: General use (high load)　　　f8: High accuracy use　　　e7: General use (light load)　　　g6: High accuracy use (intermittent operation)
·It is recommended to fix the bushing with anti-rotation screw.
[ M ] Material of Oil Free Bushings: High strength brass alloy
Embedded solid lubricant
[ A ] Accessories: Low head hexagon socket head screws 2 to 4 pcs

Product Overview of Oil Free Bushings

1. This is an Oil Free Bushings bush based on high-strength brass.
2. Can withstand greater heavy loads than ball bearings.
3. It can be used in ‘high’ and ‘low temperature’ temperature conditions.
4. Compared to ball bearings, the bush thickness is thinner and saves space.
5. Applicable to linear motion and rotary motion.

Economic type oil-free bushing copper alloy thrust type

Economic type oil-free bushing copper alloy thrust type

Product Features of Oil Free Bushings

Feature 1: This product is a fusion of solid lubricant based on high-strength brass.
Feature 2: Best suited for use in heavy load and low speed driving conditions.
Feature 3: Excellent wear resistance in areas where oil film formation is difficult, such as reciprocating motion and frequent starting and stopping.

■ Precise positioning with 7 levels of inner diameter tolerance
・Oil Free Bushings, Misumi economic type has the same inspection standards as MISUMI standard products, and quality inspection is performed before factory shipment to provide products suitable for users.

■ Comparison of specifications (take straight type as an example)

Easy installation of Oil Free Bushings

Specification Overview of Oil Free Bushings

When assembling, be careful to remove foreign substances from the surface.
Applying lubricant to the grinding part before assembly can shorten the break-in period and is advantageous for machine operation.
During assembly, operate slowly and knocking is strictly prohibited to avoid damaging the bearing and causing deformation.

Use Cases of Oil Free Bushings

1. Fixing Device of Oil Free Bushings
Since it bears a load during fixing, it is relatively suitable to use an oil-free bushing. It withstands loads better than ball bearings.

Economic oil-free bushing copper alloy thrust type use case

2. Hinge Plate of Oil Free Bushings
Oil Free Bushings are used for rotation of hinge pins and hinge plates.Can be used simultaneously for linear motion mechanisms and rotary motion mechanisms.

Caution of Oil Free Bushings

Model selection and precautions for use of Oil Free Bushings

Combined design

MISUMI miniature ball bush units are recommended to use heat-treated shafts.
It is recommended to select the holder tolerance as H7 for Misumi miniature ball bushing units.

Shaft diameter tolerance		Holder diameter tolerance
Measurement	Measurement Tolerance	Holder Diameter	H7
2	0 -0.005	7∼10	+0.015 0
3
4		11∼14	+0.018 0
5
6		15∼18	+0.018 0
8
10		19∼24	+0.021 0
12

Machining heat treatment range of Oil Free Bushings

The shaft is heat-treated and then machined.Due to heat treatment, the hardness of the female screw machining part ± 10mm before and after may decrease (see example below).
In addition, the heat treatment area is not within the guaranteed range of the outer diameter dimensional tolerance.When calculating the stroke, subtract the dimensions of the heat treated part.

Economic type oil-free bushing copper alloy thrust type precautions

Lubrication of Oil Free Bushings

When shipping miniature ball bushings, anti-rust oil is applied. Please wash and dry them, then apply grease before use.
Depending on the usage environment, replenish lithium soap-based grease (such as Alubania Grease S2 made by Showa Shell Sekiyu) as needed.

Part Number

Incomplete part number.
Please use left hand selections to complete a part number.

: 30; 45; 60

Part Number
E-MUSZ20-20

Part Number	Price	Minimum Order Qty.	Volume Discount	Days to Ship	RoHS	Inner Dia. d (Ø)	Outer Dia. D (Ø)	Overall Length L (mm)	Accessories	Dimension H (mm)
	₹ 1,444.30	1 Piece(s)	Available	Same day	10	20	28	20	Flat Head Bolts	49

Brand Introduction

Since its establishment in 1963 in Japan, MISUMI Group Inc. has been providing customers with a wide range of high quality parts such as FA factory automation parts, mold parts, electronic parts, tools and consumables in a fast and accurate manner. We have created a low-cost business model by compiling our own catalogs and establishing a marketing system to sell our products directly, and we continue to develop MISUMI branded products with a high level of quality by developing an annual product plan based on customer feedback and requests. MISUMI has been established in China since June 2003 as MISUMI Precision Machinery Co., Ltd. and later changed its name to MISUMI (China) Precision Machinery Trading Co., Ltd., headquartered in Shanghai. Since the launch of the stamping mold standard parts business, we have started the official business of FA standard parts, plastic mold standard parts and machining tools, and achieved rapid development and growth of MISUMI business in China with support from our customers. China's manufacturing market is one of the most competitive in the world because of its unlimited prospects. Thus was born MISUMI's business philosophy - the key to the future of manufacturing in China is cost competitiveness as well as "quality" and "time".

Product Overview

1. Low maintenance frequency.
2. More resistant to heavy loads than rolling bearings.
3. Can be used under severe conditions of "high" and "low" temperatures.
4. Bushings are thin and space-saving, compared to rolling bearings.
5. Can be used for linear and rotary motions.

Product Photo

Product Features

Feature 1: A composite product based on high strength brass embedded with solid lubricant.
Feature 2: Ideal for use in heavy-duty and low-speed operating conditions.
Feature 3: Excellent wear resistance in areas where it is difficult to form an oil film, such as reciprocating movements and frequent starts and stops.

■I.D. tolerance precision class 7 ensures more accurate locating.
・Even for MISUMI economy series, the inspection standard is the same as that of MISUMI standard products, and factory inspection is carried out to provide users with products that meet the catalog specifications.

■Specification Comparison (Taking the straight type as an example)
・R chamfer, which facilitates installation
・The standard load and operating speed of the catalog are ensured, so it can be used with peace of mind.

*Products circulating on the market are similar products randomly purchased by our company from online or offline markets.

Specifications Overview

When assembling, check that there are no foreign objects on the surface.
The sliding surface may become black or grey-black after use due to the oil film formed by the solid lubricant. Do not scrub it and use as usual.
Before assembly, if the lubricant is applied to the grinding parts, it can shorten the running-in period and facilitate the operation of the machine.
When assembling, it should be pressed in slowly. Knocking is strictly prohibited to avoid damaging the bearings and causing deformation.

Example of Use

■Use of cylinders without locking and braking devices

Precautions

Basic Information

Type	Flanged	Metal Type	High-Tensile Brass Alloy	Environment	Standard / In Oil
Mounting Shaft Fits	d8 / e7 / g6 / f8	Mounting Hole Fits	H7	Lubrication	Unlubricated / Regular Lubrication
Max. Allowable Surface Pressure P(N/mm²)	29	Maximum Allowable Velocity(m/s)	0.5	Max. Allowable PV Value Range(N/mm²•m/s)	1.1~2.0
Max. Allowable PV Value(N/mm²•m/s)	1.65	Operating Temperature Range(°C)	-40::150

Please check the type/dimensions/specifications of the part E-MUSZ20-20 in the Oil Free Bushings Copper Alloy Thrust Type series.

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

Frequently asked question (FAQ)

Question: What are oil free bushings and what are their features?: Answer: Plain bearings where the body of the bushing is saturated with lubricant and can be used "without oil" or "with a reduced oil supply". Oil free bushings have the following features: 1. Low maintenance frequency; 2. Suitable for low speed and heavy load situations, compared with ball linear bearings; 3. Can also be used under harsh conditions of high temperature and low temperature; 4. Thinner and space saving, compared with linear bearings; 5. Can be used for both linear and rotational motions.
Question: What are the materials and features of MISUMI oil free bushings?: Answer: MISUMI oil free bushings are available in 5 types, i.e. copper alloy, bronze casting, dry, resin, and casting.
Copper alloy (metal type), excellent resistance to high temperature, chemicals and shock, suitable for heavy duty and low speed operation.
Bronze casting (metal type) with excellent sinter resistance, enabling slight movements, suitable for low load and high speed operation.
Dry type (composite layer type), high temperature resistant, suitable for heavy duty and low speed operation, thin-walled and compact.
Resin (resin type), high temperature and chemical resistant (tetrafluoroethylene resin), complying with food sanitation law, suitable for low load and low speed operation.
Castings (metal type), suitable for medium load and low speed operation.

Product variants

Part Number
E-MUGZ10-20
E-MUGZ12-10
E-MUGZ12-12
E-MUSZ20-30
E-MUSZ20-40
E-MUSZ25-20

Standard Unit Price	Minimum order quantity	Volume Discount	Days to Ship	RoHS	Inner Dia. d (Ø)	Outer Dia. D (Ø)	Overall Length L (mm)	Accessories	Dimension H (mm)
₹ 1,017.50	1 Piece(s)	Available	Same day Stock	10	10	16	20	Not Provided	25
₹ 993.30	1 Piece(s)	Available	Same day Stock	10	12	18	10	Not Provided	30
₹ 1,094.50	1 Piece(s)	Available	Same day Stock	10	12	18	12	Not Provided	30
₹ 1,573.00	1 Piece(s)	Available	Same day Stock	10	20	28	30	Flat Head Bolts	49
₹ 1,692.90	1 Piece(s)	Available	Same day Stock	10	20	28	40	Flat Head Bolts	49
₹ 1,471.80	1 Piece(s)	Available	Same day Stock	10	25	33	20	Flat Head Bolts	54

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