Is there a big difference in hardness and wear resistance between economy series urethane bearings and existing products from MISUMI?

The economy series urethane bearing is directly formed with thermoplastic materials, with good hardness stability, small deviation and almost the same level of wear resistance as existing products.

Can urethane be wiped with alcohol?

Yes, only a small amount of alcohol can be applied for wiping. Urethane is a chemical resistant material, susceptible to corrosion. It can be dried or placed naturally after applying a small amount of alcohol. Other highly corrosive chemicals can not be applied even in small amounts.

With the rise of the hardness of urethane, does the friction rise?

No, urethane is an elastomer, and the lower the hardness, the higher the friction.

Notice of End of Sales for Economy Series Pneumatic Equipment Category. More information.

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C-TMBB8-30

type Outer Dia. D Inner Dia. d CAD Days to Ship

Specification/Dimensions

type
- C-TMBB
Clear
Outer Dia. D(Ø)
12

13

16

20

28

30

40
Clear
Inner Dia. d(Ø)
3

4

5

6

8

10

15
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

Same day
Clear

Specify Alterations

Urethane Molded Bearings Standard (C-TMBB8-30)

Volume Discount

Check FAQ of this product (3 items)

Brand :

MiSUMi Economy

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Total Price :

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Product Overview of Bearings with Resin

Bearings with Resin is used to mold the bearing, which ensures the strength of the connection while achieving higher economic efficiency.

Product Feature of Bearings with Resin

Feature 1 : Bearings with Resin, Urethane part is made of imported thermoplastic material, with excellent abrasion resistance, and higher economy.
Feature 2 : Bearings with Resin, Bearing end cap is made of resin, which is less sensitive to the environment.
Feature 3 : Bearings with Resin, Urethane is partly formed on bearing, which is not easy to fall off, and it is suitable for various contact methods.

MiSUMi urethane bearing is also a urethane rubber coated bearing

MiSUMi urethane bearing is also a urethane rubber coated bearing

Dimensional Drawing of Bearings with Resin

Polyurethane Bearing is a non-metallic elastomer

MISUMI roller With set screw Relief processing Relief groove processing Detailed dimensional drawing

Depending on the model, the edge of the coated layer may have radian
Bearings with Resin

Urethane is thermoplastic urethane.

Specifications Overview of Bearings with Resin

Type	Liner Material	Hardness	Color	Bearing Material
Standard
C-TMBB	Thermoplastic Ester Urethane	Shaw A90	Green	Bearing Steel

Material color is subject to the actual product.
Bearings with Resin

Urethane is sintered on the outer perimeter of bearing.
Bearings with Resin

Customized bearings are used. Please refer to the dimensional drawing for specific accuracy. Bearings with Resin

Nobrand is guaranteed for the bearings used in this product.

Example Use of Bearings with Resin

Example of Use ①		Role of Product
■ Wire crimping mechanism of winding machine		Bearings with Resin has excellent abrasion resistance and long service life Bearings with Resin is available in a wide variety of hardness, and different hardness can be selected according to the actual press-fit force required.
Example of Use ②		Role of Product
■ Workpiece transfer assistance		The bearing carries male threads and is easy to disassemble. The bearing has urethane to protect the workpiece from scratches.
Example of Use ③		Role of Product
■ Gluing mechanism		When the adhesive contains chemical properties, silicone rubber can be selected. Softer urethane can be selected to increase the adhesion surface between the roll paper and the workpiece.

Precautions of Bearings with Resin

1. Material color is subject to the actual product. Urethane (white) may be yellowed due to aging.
2. MISUMI does not guarantee the bearing brand.
3. Anti-rust performance and maintenance of metal materials and surface treatment.
4. About urethane discoloring
Urethane will darken its color by absorbing UV rays or illuminating light. This phenomenon is called yellowing. But it does not affect its physical properties, please fully understand when using it.

New urethane	Yellowed urethane

5. Hydrolysis characteristics of urethane
If urethane is used for a long time in a moist or humid environment, it will be hydrolyzed and deteriorated.
It is recommended to manage the temperature and humidity of the warehouse and operating environment in areas with high humidity to extend the service life of the product.

6. State change of the product after hydrolysis
·The urethane surface becomes sticky
·Tapping with your nails will leave irreversible scars
·Decreased urethane hardness
·Urethane is dry and cracked, easily disintegrated into powder

Hydrolyzed urethane

7. Urethane dimension change
Urethane dimension will change with the surrounding temperature, but the amount of change is not large, and it can be restored to its original dimension after a few hours at room temperature.

Specification Table of Bearings with Resin

Part Number

Type·d	-	D
C-TMBB6	-	20

■ Material Specification Table

Type	Liner Material	Hardness	Color	Bearing Material
Standard
C-TMBB	Thermoplastic Ester Urethane	Shaw A90	Green	Bearing Steel

■ Dimension Specification Table of Bearings with Resin

Part Number		d tolerance	D	Allowable Load N(kgf)	B	D₁	Mounting Dimensions			Bearing Nominal Specifications
Type	d						Ds		R₁
							(min.)	(max.)	(max.)
C-TMBB	3	0.005 -0.015	12	34 (3.5)	3	7	3.9	4.1	0.1	683ZZ
	4		13	44 (4.5)	4	9	5	5.2		684ZZ
			16	59 (6)	5	13	5.6	6.2	0.2	624ZZ
	5		16				6.6	6.9		685RS
			20	78 (8)		16	7	7.6	0.3	625RS
	6		20			15	7.6	7.8	0.2	696RS
			28	157 (16)	6	19	8	9.5	0.3	626RS
	8		28		7	22	10	12.2		608RS
			30	176 (18)						608RS
	10		30		8	26	12	13.5		6000RS
			40	274 (28)	9	30	14	16	0.6	6200RS
	15		40			32	17	19	0.3	6002RS

Related Industries of Bearings with Resin

Electronic		Automotive

Smart phone		Semiconductor

Related Products of Bearings with Resin

Resin Collar Standard	Stopper bolt with urethane Straight type	Urethane molded bearing Inner wheel protruded For heavy load

Typical model: CLJJ10-16-20.0	Typical model: UST8-40	Typical model: UMRHW40
Advantages: Optional inner and outer diameter and height, better price	Suitable for conveying heavy load workpieces, compact tip, usable in narrow spaces	Suitable for conveying heavy load workpieces

Specification Table

Part Number

Type·d	-	D
C-TMBB6	-	20

■Material Specification Table

Type	Liner Material	Hardness	Color	Bearing Material
Standard
C-TMBB	Thermoplastic Ester Urethane	Shaw A90	Green	Bearing Steel

■ Dimension Specification Table

Part Number		d tolerance	D	Allowable Load N(kgf)	B	D₁	Mounting Dimensions			Bearing Nominal Specifications
Type	d						Ds		R₁
							(min.)	(max.)	(max.)
C-TMBB	3	0.005 -0.015	12	34 (3.5)	3	7	3.9	4.1	0.1	683ZZ
	4		13	44 (4.5)	4	9	5	5.2		684ZZ
			16	59 (6)	5	13	5.6	6.2	0.2	624ZZ
	5		16				6.6	6.9		685RS
			20	78 (8)		16	7	7.6	0.3	625RS
	6		20			15	7.6	7.8	0.2	696RS
			28	157 (16)	6	19	8	9.5	0.3	626RS
	8		28		7	22	10	12.2		608RS
			30	176 (18)						608RS
	10		30		8	26	12	13.5		6000RS
			40	274 (28)	9	30	14	16	0.6	6200RS
	15		40			32	17	19	0.3	6002RS

Part Number

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

: 30; 45; 60

Part Number
C-TMBB8-30

Part Number	Price	Minimum Order Qty.	Volume Discount	Days to Ship	RoHS	Outer Dia. D (Ø)	Inner Dia. d (Ø)
	₹ 86.00	1 Piece(s)	Available	Same day	10	30	8

Basic Information

Bearing Material	SUJ2	Outer Ring Type	Flat Type	Surface Material	Polyacetal (Standard)
Mounting Type	Hole	Operating/Environmental Requirement	Standard (For Light Loads)	Hardness	Shore A90
Color	Green

Please check the type/dimensions/specifications of the part C-TMBB8-30 in the Urethane Molded Bearings Standard 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: Is there a big difference in hardness and wear resistance between economy series urethane bearings and existing products from MISUMI?: Answer: The economy series urethane bearing is directly formed with thermoplastic materials, with good hardness stability, small deviation and almost the same level of wear resistance as existing products.
Question: Can urethane be wiped with alcohol?: Answer: Yes, only a small amount of alcohol can be applied for wiping.
Urethane is a chemical resistant material, susceptible to corrosion. It can be dried or placed naturally after applying a small amount of alcohol. Other highly corrosive chemicals can not be applied even in small amounts.
Question: With the rise of the hardness of urethane, does the friction rise?: Answer: No, urethane is an elastomer, and the lower the hardness, the higher the friction.

Product variants

Part Number
C-TMBB10-30
C-TMBB10-40
C-TMBB15-40
C-TMBB3-12
C-TMBB4-13
C-TMBB4-16

Standard Unit Price	Minimum order quantity	Volume Discount	Days to Ship	RoHS	Outer Dia. D (Ø)	Inner Dia. d (Ø)
₹ 94.00	1 Piece(s)	Available	Same day Stock	10	30	10
₹ 133.00	1 Piece(s)	Available	Same day Stock	10	40	10
₹ 156.00	1 Piece(s)	Available	Same day Stock	10	40	15
₹ 77.00	1 Piece(s)	Available	Same day Stock	10	12	3
₹ 77.00	1 Piece(s)	Available	Same day Stock	10	13	4
₹ 77.00	1 Piece(s)	Available	Same day Stock	10	16	4

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