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Conveyor Bearings - Urethane/silicone rubber covered, flat type. (UMBB6-28)

Volume Discount
Lead Time Reduction

MISUMI

•Type: Flat Type
•Operating Environment: Standard
•Mounting Style: Hole
•Bearing Material: 440C Stainless Steel

inCAD Components

Part Number

Configured Part Number is shown.

UMBB6-28

Drawing/Specifications
3D Preview
Part Numbers
More Information
Catalog

Silicon Rubber / Urethane Molded Bearings - Flat:Related Image

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

・Materials

Type		[ M ] Material	[ H ] Hardness	Color
Bearing
Steel (52100 Bearing Steel)	Stainless Steel (440C Stainless Steel)
UMBBK	UMSBK	Urethane	Shore A95	Black
UMBBKW	UMSBKW		Shore A95	White
UMBB	UMSB		Shore A90	Black
UMBW	UMSW		Shore A90	White
UMBG	UMSG		Shore A70	Black
UMBGW	UMSGW		Shore A70	White
UMBL	-		Shore A50	Black
UMBLW	-		Shore A50	White
UMBD	-	Antistatic Urethane	Shore A90	Gray
SUMBB	SUMSB	Silicon Rubber	Shore A70	Light Gray

Specifications

Part Number	-	D
UMBB10	-	30A

■Shape A

Part Number		D	Allowable Load N (kgf)					B	D₁	r (min.)	Relative Dimension			Bearing Used
Type	d		Urethane				Silicon				D_s		R₁ (max.)
Type	d		Shore A95	Shore A90	Shore A70	Shore A50	Shore A70				(min.)	(max.)	R₁ (max.)
Urethane UMBBK UMSBK UMBBKW UMSBKW UMBB UMSB UMBW UMSW UMBG UMSG UMBGW UMSGW UMBL UMBLW Antistatic Urethane UMBD Silicon Rubber SUMBB SUMSB	3	10	38(3.8)	28(2.8)	9(0.9)	4(0.4)	7(0.7)	3	7	0.1	3.9	4.1	0.1	W683ZZA
	3	12	53(5.4)	34(3.5)	10(1)	6(0.6)	9.8(1)	3	7	0.1	3.9	4.1		W683ZZA
	*4	13	66(6.7)	44(4.5)	13(1.3)	7(0.7)	13(1.3)	4	9	0.15	5	5.2		W684AX50ZZ
	*4	16	79(8.1)	59(6)	16(1.6)	6(0.6)	18(1.8)	5	13	0.2	5.6	6.2	0.2	624ZZ
	*5	16	79(8.1)	59(6)	16(1.6)	6(0.6)	18(1.8)		13	0.2	6.6	6.9	0.2	WBC5-13ZZ
	*5	20	102(10.4)	78(8)	20(2)	9(0.9)	24(2.4)		16	0.3	7	7.6	0.3	625ZZ
	*6	20	114(11.7)	78(8)	23(2.3)	15(1.5)	24(2.4)		15	0.2	7.6	7.8	0.2	696ZZ
	*6	28	218(22.2)	157(16)	44(4.5)	39(4)	47(4.8)	6	19	0.3	8	9.5	0.3	626ZZ
	*8	28	208(21.2)	157(16)	42(4.3)	35(3.6)	47(4.8)	7	22		10	12.2		608ZZ
	*8	30A	-	176(18)	81(8.3)	65(6.7)	53(5.4)	7	22		10	12.2		608ZZ
	10	30A	-	176(18)	94(9.6)	51(5.2)	53(5.4)	8	26		12	13.5		6000ZZ
	10	40A	-	274(28)	136(13.9)	93(9.5)	82(8.4)	9	30	0.6	14	16	0.6	6200ZZ
	15	40A	-	274(28)	122(12.4)	96(9.9)	82(8.4)	9	32	0.3	17	19	0.3	6002ZZ
	15	45A	-	343(35)	109(11.1)	102(10.5)	103(10.5)	11	35	0.6	19	20	0.6	6202ZZ
	20	45A	-	343(35)	130(13.3)	98(10.1)	103(10.5)	9	37	0.3	22	24	0.3	6904ZZ
	20	55A	-	490(50)	225(22.9)	176(18.1)	147(15)	14	47	1	25	28	1	6204ZZ
	25	65A	-	750(70)	333(34)	250(25.8)	226(23)	15	52	1	30	32	1	6205ZZ

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

■Shape B

Part Number		D	Allowable Load N (kgf)					B	D₁	B₁	r (min.)	Relative Dimension			Bearing Used
Type	d		Urethane				Silicon					D_s		R₁ (max.)
Type	d		Shore A95	Shore A90	Shore A70	Shore A50	Shore A70					(min.)	(max.)	R₁ (max.)
Urethane UMBBK UMSBK UMBBKW UMSBKW UMBB UMSB UMBW UMSW UMBG UMSG UMBGW UMSGW UMBL UMBLW Antistatic Urethane UMBD Silicon Rubber SUMBB SUMSB	8	30	248(25.3)	176(18)	81(8.3)	65(6.7)	53(5.4)	11	22	7	0.3	10	12.2	0.3	608ZZ
	10	30	201(20.5)	176(18)	94(9.6)	51(5.2)	53(5.4)		26	8	0.3	12	13.5	0.3	6000ZZ
	10	40	412(42)	274(18)	136(13.9)	93(9.5)	82(8.4)		30	9	0.6	14	16	0.6	6200ZZ
	15	40	369(37.6)	274(18)	122(12.4)	96(9.9)	82(8.4)	12	32	9	0.3	17	19	0.3	6002ZZ
	15	45	534(54.5)	343(35)	109(11.1)	102(10.5)	103(10.5)	15	35	11	0.6	19	20	0.6	6202ZZ
	20	45	391(39.9)	343(35)	130(13.3)	98(10.1)	103(10.5)	12	37	9	0.3	22	24	0.3	6904ZZ
	20	55	674(68.7)	490(50)	225(22.9)	176(18.1)	147(15)	18	47	14	1	25	28	1	6204ZZ
	25	65	999(101.9)	750(70)	333(34)	250(25.8)	226(23)	19	52	15	1	30	32	1	6205ZZ

[ ! ]Allowable load is for reference.
[ ! ]See price chart for available sizes.

Price list

d	D	Unit Price
		Steel Bearing								Stainless Steel Bearing
		Urethane						Antistatic Urethane	Silicon	Urethane				Silicon
		Shore A95	Shore A90	Shore A70		Shore A50		Shore A90	Shore A70	Shore A95	Shore A90		Shore A70	Shore A70
		UMBBK UMBBKW	UMBB UMBW	UMBG	UMBGW	UMBL	UMBLW	UMBD	SUMBB	UMSBK UMSBKW	UMSB	UMSW	UMSG UMSGW	SUMSB
3	10	680	520	670	670	670	670	700	790	-	-	-	-	-
3	12								790	-	-	-	-	-
4	13								740	900	690	690	880	930
4	16	670	510	660	660	660	660	690		900	690	690	880
5	16									980	750	750	960
5	20									980	750	750	960
6	20	690	530	680	680	680	680	710	830	1,040	800	800	1,020	1,070
6	28								860					1,110
8	28								860					1,110
	30	980	750	960	960	960	960	920	1,040	1,190	910	910	1,160	1,330
	30A	-	750	-	960	-	960	-	-	-	910	-	-	-
10	30	1,020	780	990	990	990	990	950	1,040	1,760	1,350	-	-	-
	40	1,040	800	1,020	1,020	1,020	1,020	970	1,100	1,820	1,400	-	-	-
	30A	-	780	-	990	-	990	-	-	-	1,350	-	-	-
	40A	-	800	-	1,020	-	1,020	-	-	-	1,400	-	-	-
15	40	1,010	770	980	980	980	980	940	1,150	1,930	1,480	-	-	-
	45	1,070	820	1,050	1,050	1,050	1,050	1,000	1,180	2,120	1,630	-	-	-
	40A	-	770	-	980	-	980	-	-	-	1,480	-	-	-
	45A	-	820	-	1,050	-	1,050	-	-	-	1,630	-	-	-
20	45	1,100	840	1,090	1,090	1,090	1,090	1,020	1,470	2,990	2,300	-	-	-
	55	1,270	970	1,240	1,240	1,240	1,240	1,140	1,300	-	-	-	-	-
	45A	-	840	-	1,090	-	1,090	-	-	-	2,300	-	-	-
	55A	-	970	-	1,240	-	1,240	-	-	-	-	-	-	-
25	65	1,470	1,130	1,460	1,460	1,460	1,460	1,310	1,590	-	-	-	-	-
25	65A	-	1,130	-	1,460	-	1,460	-	-	-	-	-	-	-

■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.

Alterations

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
UMBB6-28

Part Number	Minimum order quantity	Volume Discount	Days to Ship	RoHS	Bearing material	Surface Material	Outer Diameter D (Ø)	Width B (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)	28	6	6	100.1~200.0	157	Shore A90	Black

Example

-->-->

e-Catalog Search Key #MA112
܂ -->

-->-->

e-Catalog Search Key #MA275
܂ -->

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.

Ways to Use

Rubber/ Urethane Coated Bearings

No.	Product Name	Quantity	Notes
1	Molded Urethane Bearing, Form A.	1
2	Threaded Shaft for Bearings	1
3	Bearing Spacer	1	Automatic selection (with or without)

No.	Product Name	Quantity	Notes
1	Molded Urethane, Silicone Rubber Bearing	1
2	Cantilever Shafts, Retaining Ring Type	1
3	Type C Retaining Ring	1	Automatic selection

Compatible Models

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

Product TOP

Basic Information

Type	Flat Type	Mounting Style	Hole	Operating Environment	Standard (for Light Load)

Please check the type/dimensions/specifications of the part UMBB6-28 in the Conveyor Bearings - Urethane/silicone rubber covered, flat type. series.

Configure

1 Part Numbers

View Part Numbers

Configure Remaining Specifications

Completed

Specification/Dimensions

Bearing material
- Stainless Steel
  - 440C Stainless Steel
Clear
type
- SUMBB
- SUMSB
- UMBB
- UMBBK
- UMBBKW
- UMBD
- UMBG
- UMBGW
- UMBL
- UMBLW
- UMBW
- UMSB
- UMSBK
- UMSBKW
- UMSG
- UMSGW
- UMSW
Clear
Surface Material
- Urethane
  - Antistatic Urethane
  - Urethane (General)
- Silicon Rubber
Clear
Outer Diameter D(Ø)
10

12

13

16

20

28

30

40

45

55

65
Clear
Width B(mm)
3

4

5

6

7

8

9

11

12

14

15

18

19
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)
4

6

7

9

9.8

10

13

15

16

18

20

23

24

28

34

35

38

39

42

44

47

51

53

59

65

66

78

79

81

82

93

94

96

98

102

103

109

114

122

130

136

147

157

176

201

208

218

225

226

248

250

274

333

343

369

391

412

490

534

674

750

999
Clear
Hardness
- Shore A50
- Shore A70
- Shore A90
- Shore A95
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
UMBB10-40A
UMBB15-40
UMBB15-40A
UMBB8-28
UMBB8-30
UMBB8-30A

Minimum order quantity	Volume Discount	Days to Ship	RoHS	Bearing material	Surface Material	Outer Diameter D (Ø)	Width B (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)	40	9	10	200.1~300.0	274	Shore A90	Black
1 Piece(s)	Available	10 Days or more	10	-	[Urethane] Urethane (General)	40	12	15	200.1~300.0	274	Shore A90	Black
1 Piece(s)	Available	10 Days or more	10	-	[Urethane] Urethane (General)	40	9	15	200.1~300.0	274	Shore A90	Black
1 Piece(s)	Available	10 Days or more	10	-	[Urethane] Urethane (General)	28	7	8	100.1~200.0	157	Shore A90	Black
1 Piece(s)	Available	10 Days or more	10	-	[Urethane] Urethane (General)	30	11	8	100.1~200.0	176	Shore A90	Black
1 Piece(s)	Available	10 Days or more	10	-	[Urethane] Urethane (General)	30	7	8	100.1~200.0	176	Shore A90	Black

Additional Products in this Category

Complementary Products

Rotary Shafts - Straight.
MISUMI Days to Ship : 7 Days or more
Cantilever Shafts - Standard, Retaining Ring Groove
MISUMI Days to Ship : 8 Days or more
Bearing Shaft Screws - with Retaining Ring Groove
MISUMI Days to Ship : 10 Days or more
Conveyor Bearings - Silicone/urethane rubber, threaded shaft.
MISUMI Days to Ship : Same day or more
Conveyor Bearings - Light load.
MISUMI Days to Ship : Same day or more

Modules

MISUMI Unit Example related to this product

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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

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Conveyor Bearings - Urethane/silicone rubber covered, flat type. (UMBB6-28)

Specifications

Price list

Alterations

Part Number

Example

Technical Information

Bearings Dimensions

Support Information

Hardness Guide

Material Characteristics

Comparison between Materials

Precautions

Way to Use

Ways to Use

Rubber/ Urethane Coated Bearings

Compatible Models

Basic Information

Configure

Specification/Dimensions

Bearing material

type

Surface Material

Outer Diameter D(Ø)

Width B(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

Modules

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)