(!)Due to Microsoft's end of support for Internet Explorer 11 on 15/06/2022, this site does not support the recommended environment.

Our Business Hours:
Mon. - Fri. 8 a.m. - 6 p.m.

All Categories

Applications

inCAD Library

Brands

Brand List

Webcode Seach | Series: #CODE

Keyword suggestions

Part number suggestions

Discontinued Products

Need Help?

Order/Quote

Order

Order

/ Order
/ Order

Part Number Checker

Catalog Request

Scheduled Maintenance Notice: This site will be unavailable due to scheduled maintenance from 7:00 p.m. 12/14/2024 to 4:00 p.m. (CST) 12/15/2024. We apologize for the inconvenience.

How can we improve?

How can we improve?

Comments

Name (Optional)

E-mail Address (Optional)

Tel (Optional)

While we are not able to respond directly to comments submitted in this form, the information will be reviewed for future improvement.

Customer Privacy Policy

Thank you for your cooperation.

While we are not able to respond directly to comments submitted in this form, the information will be reviewed for future improvement.
Please use the inquiry form.

Customer Privacy Policy

Conveyor Bearings - Urethane/silicone/rubber covered, R type, threaded shaft. (UMBGRH8-28)

Volume Discount
Lead Time Reduction

MISUMI

•Type: Type R
•Operating Environment: Standard
•Bearing Material: 440C Stainless Steel
•Tightening Method: With Hex Socket

inCAD Components

Part Number

Configured Part Number is shown.

UMBGRH8-28

Drawing/Specifications
3D Preview
Part Numbers
More Information
Catalog

Silicon Rubber Mold Bearings - Crown, with Threaded Shaft:Related Image

[ ! ]For bearing detailed dimensions, see >> Click here.

・Materials

Type		[ M ] Material	[ H ] Hardness	Color	Bearing	Shaft
R Type						Shaft
Standard Threaded	Long Threaded					[ M ]Material	[ S ]Surface Treatment
UMBRH	UMBRT	Urethane	Shore A90	Black	52100 Bearing Steel	SUM	Electroless Nickel Plating
UMSBRH	-			Black	440C Stainless Steel	303 Stainless Steel	-
UMBWRH	UMBWRT			White	52100 Bearing Steel	SUM	Trivalent Chromate
UMSWRH	UMSWRT			White	440C Stainless Steel	303 Stainless Steel	-
UMBGRH	-		Shore A70	Black	52100 Bearing Steel	SUM	Electroless Nickel Plating
UMBGWRH	-		Shore A70	White	52100 Bearing Steel	SUM	Trivalent Chromate
SUMBRH	SUMBRT	Silicon Rubber	Shore A70	Light Gray	52100 Bearing Steel	SUM	Electroless Nickel Plating
SUMSBRH	SUMSBRT	Silicon Rubber	Shore A70	Light Gray	440C Stainless Steel	303 Stainless Steel	-
UMBDRH	UMBDRT	Antistatic Urethane	Shore A90	Gray	52100 Bearing Steel	SUM	Electroless Nickel Plating

[ M ] Material: Steel Type:
Bearing 52100 Bearing Steel, Shaft SUM, Stainless Steel Type:
Bearing 440C Stainless Steel,
Shaft 303 Stainless Steel
Bearing Accuracy JIS B 1514 0 Class
[ S ] Surface Treatment: Electroless Nickel Plating
(UMBR_, UMBGRH,
SUMBR_, UMBDR_)
Trivalent Chromate
(UMBWR_, UMBGWRH)

Specifications

Part Number	-	D
SUMBRH20	-	55

■Shape A

Part Number			D	M (Coarse)	F		Allowable Load N (kgf)						B	D₁	r (min.)	G	R	Bearing Used
Type		d			Standard	Long	Urethane				Silicon
							Shore A90		Shore A70		Shore A70
Standard Threaded UMBRH UMSBRH UMBWRH UMSWRH UMBGRH UMBGWRH SUMBRH SUMSBRH UMBDRH	Long Threaded UMBRT UMBWRT UMSWRT *SUMBRT SUMSBRT UMBDRT	3	12	M3	4	6	34	(3.5)	10	(1)	9.8(1)		3	7	0.1	1.5	5	W683ZZA
		*4	13	M4	5	8	44	(4.5)	13	(1.3)	13	(1.3)	4	9	0.15			W684AX50ZZ
			16				59	(6)	16	(1.6)	18	(1.8)	5	13	0.2			624ZZ
		*5	16						16	(1.6)						2.5		WBC5-13ZZ
			20				78	(8)	20	(2)	24	(2.4)		16	0.3			625ZZ
		*6	20	M6	8	12			23	(2.3)				15	0.2			696ZZ
			28				157	(16)	44	(4.5)	47	(4.8)	6	19	0.3			626ZZ
		*8	28				176	(18)	42	(4.3)			7	22		4		608ZZ

[ ! ]Only d4~8 are available for * marked types.
[ ! ]Allowable load is for reference.

■Shape B

Part Number			D	M (Coarse)	F		Allowable Load N (kgf)					B	D₁	B₁	r (min.)	G	R	Bearing Used
Type		d			Standard	Long	Urethane			Silicon
							Shore A90	Shore A70		Shore A70
Standard Threaded UMBRH UMSBRH UMBWRH UMSWRH UMBGRH UMBGWRH SUMBRH SUMSBRH UMBDRH	Long Threaded UMBRT UMBWRT UMSWRT SUMBRT SUMSBRT UMBDRT	8	30	M6	8	12	176(18)	81	(8.3)	53	(5.4)	11	22	7	0.3	4	15	608ZZ
		10	30					94	(9.6)				26	8		5		6000ZZ
			40				274(28)	136	(13.9)	82	(8.4)		30	9	0.6			6200ZZ
		15	40	M10	12	20		122	(12.4)			12	32		0.3			6002ZZ
			45				343(35)	109	(11.1)	103	(10.5)	15	35	11	0.6			6202ZZ
		20	45					130	(13.3)			12	37	9	0.3	8		6904ZZ
			55				490(50)	225	(22.9)	147(15)		18	47	14	1		20	6204ZZ
		25	65				750(70)	333	(34)	226(23)		19	52	15		10		6205ZZ

[ ! ]Allowable load is for reference.

■Properties of Antistatic Urethane

Item	Increment	UMBDRH, UMBDRT
Specific Volume Resistivity	Ω · cm	2.1X10⁸
Surface Resistivity	Ω	4.0X10⁹

[ ! ]Test Conditions (Temperature 30°C / Humidity 60%)
[ ! ]Listed values are not guaranteed values but an example of measured values.

Price list

d	D	Unit Price
		Urethane (Shore A90)		Urethane (Shore A70)	Silicon Rubber (Shore A70)		Antistatic Urethane (Shore A90)
		Steel Bearing	Stainless Steel Bearing	Steel Bearing	Steel Bearing	Stainless Steel Bearing	Steel Bearing
		UMBRH UMBWRH UMBRT UMBWRT	UMSBRH UMSWRH UMSWRT	UMBGRH UMBGWRH	SUMBRH SUMBRT	SUMSBRH SUMSBRT	UMBDRH UMBDRT
3	12	1,020	-	1,310	1,310	-	1,290
4	13	1,020	1,130	1,310	1,260	1,370	1,290
4	16	1,010	1,120	1,290		1,370	1,280
5	16		1,130			1,380
5	20		1,130			1,380
6	20	1,040	1,120	1,330	1,380	1,510	1,310
6	28		1,130		1,400	1,540
8	28		1,140		1,400	1,540
8	30	1,310	1,250	1,680	1,670	1,850	1,580
10	30	1,360	-	1,740	1,700	-	1,630
10	40	1,400	-	1,790	1,760	-	1,670
15	40	1,350	-	1,730	1,840	-	1,620
15	45	1,430	-	1,830	1,860	-	1,700
20	45	1,460	-	1,870	2,200	-	1,730
20	55	1,630	-	2,090	2,060	-	1,900
25	65	1,800	-	2,300	2,360	-	2,070

■Volume Discount Rate ([ ! ]Round down to nearest one cent.) P.89

Quantity	1~19	20~34	35~49	50~99
Discount Rate	Unit Price	5%	15%	30%

[ ! ]For orders larger than indicated quantity, please request a quotation.

Part Number

CAD Data download and 3D preview are not available because the part number has not yet been determined.

*In order to open the CAD Data download and 3D preview screen, the part number must be fixed.
Please confirm the part number from "Specification / Dimension"on the left side, and then perform the CAD Data Download / 3D Preview operation.

CAD Download

: 30; 45; 60

Part Number
UMBGRH8-28

Part Number	Minimum order quantity	Volume Discount	Days to Ship	RoHS	Bearing material	Surface Material	Mounting Style	Outer Diameter D (Ø)	Width B (mm)	Nominal of Thread M (mm)	I.D. d (Ø)	Allowable Load Range (N)	Allowable Load (N)	Hardness	Color
	1 Piece(s)	Available	10 Days or more	10	-	[Urethane] Urethane (General)	[Screw] Standard Threaded	28	7	6	8	20.1~50.0	42	Shore A70	Black

Technical Information

Bearings Dimensions

For dimensions and/or specifications of the bearings, Click here.

Support Information

Hardness Guide

Hardness	Example
Shore A95	Golf Ball	Hard
Shore A90	Baseball
Shore A70	Softball
Shore A50	Plastic Eraser
Shore A30	Bicycle Inner Tube	Soft

Hardness tolerance range: ±5 of the indicated value.

Material Characteristics

It is important to select the right material according to your application, the different materials we handle within the catalog are

Material	Description
Urethane	Excels in mechanical strength. Weak in heat and chemical resistance. Wide range of hardness variations.
Nitrile (NBR)	Excels in abrasion resistance and oil resistance, and economical. Inferior in weather resistance. Avoid using in areas where it may be exposed to direct sunlight or around ozone-generating electrical devices.
Chloroprene (CR)	Well-balanced in properties and economical.
Ethylene (EPDM)	Excels in weather resistance and economical. Inferior in oil resistance and fire resistance.
Butyl (IIR)	Excels in weather resistance and airtightness. Suited for inner tube of air tire. Inferior in oil resistance and fire resistance.
Fluorine (FPM)	Excels in most properties.
Silicone (SI)	Excels in heat resistance. Inferior in mechanical strength.
Low Elastic	Excels in shock absorption and oil resistance. Inferior in heat resistance and low temperature resistance.

Comparison between Materials

The following is a comparison of the resistance of the materials:

	Weak							Strong
Mechanical Strength	Silicone	Low Elastic	Butyl	Ethylene	Nitrile	Fluorine	Chloroprene	Urethane
Weather Resistance	Nitrile	Low Elastic	Chloroprene	Urethane	Butyl	Silicone	Ethylene	Fluorine
Abrasion Resistance	Silicone	Low Elastic	Butyl	Ethylene	Chloroprene	Urethane	Nitrile	Fluorine
Heat Resistance	Low Elastic	Urethane	Nitrile	Chloroprene	Butyl	Ethylene	Silicone	Fluorine
Oil Resistance	Butyl	Ethylene	Silicone	Chloroprene	Urethane	Low Elastic	Nitrile	Fluorine

Precautions

Urethane will change color and turn yellow over time.

Particularly antistatic urethane (gray color) may undergo noticeable discoloration, but, without physical problems and maintaining its properties.

The process of discoloration over time is shown below. Please consider this before use.

*Time and level of discoloration varies greatly depending on the environment of use, etc.

Before Changing After Changing

Way to Use

Use	Sideways	Over	Under	Diagonal
Use
Recommended Products	Press-fit bearing	Press-fit bearing	Lightweight: Press-fit bearings Heavyweight: Molded bearings	Molded bearing

[!] The bearing urethane might come loose even if the bearing is used upward, sideways or downward, the bearing urethane can come loose. It happened because an unbalanced load is applied due to mounting accuracy, balancing of the workpiece, or it is used at high rotational speeds.

Compatible Models

Category	Shaft Collars	Shaft Supports	Locating Unit Components	Belt & Plastic Chain Conveyors	Aluminum Extrusion Structural Units
Image

Product TOP

Basic Information

Type	Type R	Operating Environment	Standard (for Light Load)	Screw Head Shape	Hex Socket

Please check the type/dimensions/specifications of the part UMBGRH8-28 in the Conveyor Bearings - Urethane/silicone/rubber covered, R type, threaded shaft. series.

Configure

1 Part Numbers

View Part Numbers

Configure Remaining Specifications

Completed

Specification/Dimensions

Bearing material
- Stainless Steel
  - 440C Stainless Steel
Clear
type
- SUMBRH
- SUMBRT
- SUMSBRH
- SUMSBRT
- UMBDRH
- UMBDRT
- UMBGRH
- UMBGWRH
- UMBRH
- UMBRT
- UMBWRH
- UMBWRT
- UMSBRH
- UMSWRH
- UMSWRT
Clear
Surface Material
- Urethane
  - Antistatic Urethane
  - Urethane (General)
- Silicon Rubber
Clear
Mounting Style
- Screw
  - Long Threaded
  - Standard Threaded
Clear
Outer Diameter D(Ø)
12

13

16

20

28

30

40

45

55

65
Clear
Width B(mm)
3

4

5

6

7

11

12

15

18

19
Clear
Nominal of Thread M(mm)
3

4

6

10
Clear
I.D. d(Ø)
3

4

5

6

8

10

15

20

25
Clear
Allowable Load Range(N)
4.0~20.0

20.1~50.0

50.1~100.0

100.1~200.0

200.1~300.0

300.1~500.0

500.1~1050.0
Clear
Allowable Load(N)
9.8

10

13

16

18

20

23

24

34

42

44

47

53

59

78

81

82

94

103

109

122

130

136

147

157

176

225

226

274

333

343

490

750
Clear
Hardness
- Shore A70
- Shore A90
Clear
Color
- Black
- Gray
- Light Gray
- White
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

8 Days or Less

10 Days or Less

12 Days or Less
Clear

Specify Alterations

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

Products like this...

Part Number
SUMBRH15-45
SUMBRH20-45
SUMBRH20-55
UMBGRH8-30
UMBGWRH10-30
UMBGWRH10-40

Minimum order quantity	Volume Discount	Days to Ship	RoHS	Bearing material	Surface Material	Mounting Style	Outer Diameter D (Ø)	Width B (mm)	Nominal of Thread M (mm)	I.D. d (Ø)	Allowable Load Range (N)	Allowable Load (N)	Hardness	Color
1 Piece(s)	Available	12 Days or more	10	-	Silicon Rubber	[Screw] Standard Threaded	45	15	10	15	100.1~200.0	103	Shore A70	Light Gray
1 Piece(s)	Available	12 Days or more	10	-	Silicon Rubber	[Screw] Standard Threaded	45	12	10	20	100.1~200.0	103	Shore A70	Light Gray
1 Piece(s)	Available	12 Days or more	10	-	Silicon Rubber	[Screw] Standard Threaded	55	18	10	20	100.1~200.0	147	Shore A70	Light Gray
1 Piece(s)	Available	10 Days or more	10	-	[Urethane] Urethane (General)	[Screw] Standard Threaded	30	11	6	8	50.1~100.0	81	Shore A70	Black
1 Piece(s)	Available	10 Days or more	10	-	[Urethane] Urethane (General)	[Screw] Standard Threaded	30	11	6	10	50.1~100.0	94	Shore A70	White
1 Piece(s)	Available	10 Days or more	10	-	[Urethane] Urethane (General)	[Screw] Standard Threaded	40	11	6	10	100.1~200.0	136	Shore A70	White

Additional Products in this Category

Complementary Products

Supports for Cam Follower - Aluminum.
MISUMI Days to Ship : 12 Days or more
Conveyor Bearings - Shafts for molded, urethane bearings.
MISUMI Days to Ship : 10 Days or more
Conveyor Bearings - Light load.
MISUMI Days to Ship : Same day or more
Conveyor Bearings - Heavy load.
MISUMI Days to Ship : Same day or more
Conveyor Bearings - Threaded shaft.
MISUMI Days to Ship : 8 Days or more

MISUMI Unit Example related to this product

back next

Tech Support

Technical Support: Tel：+52-442-672-7661 ext. 2 then wait and dial 4
E-mail: soportetecnico@misumimex.com; Mon. - Fri. 8 a.m. - 6 p.m.; Technical Inquiry

Top of the page

About This Website

About MISUMI Corporation

Contact us Monday to Friday: 8:00 am to 6:00 pm (Mexico City time)

Contact Information: Contact Us

Inquiry Format

All Categories

Categories

Applications

Brands

How can we improve?

Conveyor Bearings - Urethane/silicone/rubber covered, R type, threaded shaft. (UMBGRH8-28)

Specifications

Price list

Part Number

Technical Information

Bearings Dimensions

Support Information

Hardness Guide

Material Characteristics

Comparison between Materials

Precautions

Way to Use

Compatible Models

Basic Information

Configure

Specification/Dimensions

Bearing material

type

Surface Material

Mounting Style

Outer Diameter D(Ø)

Width B(mm)

Nominal of Thread M(mm)

I.D. d(Ø)

Allowable Load Range(N)

Allowable Load(N)

Hardness

Color

CAD

Days to Ship

Specify Alterations

Products like this...

Additional Products in this Category

Complementary Products

MISUMI Unit Example related to this product

Tech Support

About This Website

About MISUMI Corporation

Contact us Monday to Friday: 8:00 am to 6:00 pm (Mexico City time)