Urethane Molded Bearings With Screw Rod

Brand :

MISUMI

Caution

Product Description

Product Overview

Polyurethane is sintered onto the bearing to form a high-bond-strength coated bearing, which is combined with an external threaded bolt for easy installation.
Various hardness levels of polyurethane and anti-static polyurethane are available.

Dimensional Drawing

Comparison of Deep Groove Ball Bearings Made in China and Japan

Color is subject to the actual product.

The brand of the bearing used in this product is not guaranteed.

No relief groove machining on the threaded part.

Material Table

Type		Material	Hardness	Color	Bearing	Shaft		Shape A	Shape B
Flat Type						Shaft
Standard External Thread Type	Extended External Thread Type					Material	Surface Treatment
E-UMBKH	E-UMBKT	Urethane	Shore A95	Black	S45C or Gcr15	SUM	Electroless Nickel Plating	Inner diameter: d3 to 8 Outer diameter: D12 to 28 Thread diameter: M3 M4 M6 Allowable load N: 6 to 157	Inner Diameter: d8 to 15 Outer Diameter: D30 to 45 Thread Diameter: M6 M10 Allowable Load N: 51 to 343
E-UMSBKH	E-UMSBKT			Black	Martensitic Stainless Steel	SUS303	-
E-UMBKWH	E-UMBKWT			White	S45C or Gcr15	SUM	Electroless Nickel Plating
E-UMSBKWH	E-UMSBKWT			White	Martensitic Stainless Steel	SUS303	-
E-UMBH	E-UMBT		Shore A90	Black	S45C or Gcr15	SUM	Electroless Nickel Plating
E-UMSBH	E-UMSBT			Black	Martensitic Stainless Steel	SUS303	-
E-UMBWH	E-UMBWT			White	S45C or Gcr15	SUM	Electroless Nickel Plating
E-UMSWH	E-UMSWT			White	Martensitic Stainless Steel	SUS303	-
E-UMBGH	—		Shore A70	Black	S45C or Gcr15	SUM	Electroless Nickel Plating
E-UMBLH	—		Shore A50	Black	S45C or Gcr15	SUM	Electroless Nickel Plating
E-UMBLWH	E-UMBLWT		Shore A50	White	S45C or Gcr15	SUM	Electroless Nickel Plating
E-UMBDH	E-UMBDT	Antistatic Urethane	Shore A90	Grey	S45C or Gcr15	SUM	Electroless Nickel Plating

Permissible load is a reference value

For the characteristics of conductive polyurethane, please refer to the right.

The head of the external bolt with type shape A may protrude beyond the bearing side. Please pay attention to whether this affects installation when selecting.

If there are requirements for rust prevention, give priority to products with surface treatment of electroless nickel plating and those made of austenitic stainless steel. For surface treatment and rust prevention methods, please refer to

here.

For detailed bearing dimensions, please refer to here.

Color is subject to the actual product.

The brand of the bearing used in this product is not guaranteed.

No relief groove machining on the threaded part.

■ Characteristics of Electrostatic Polyurethane

Item	Unit	UMBD
Volume Resistivity	Ω·cm	2.1 × 10⁸
Surface Resistivity	Ω	4.0 × 10⁹

Test conditions: (Temperature 30°C / Humidity 60%)

The recorded values are measurement examples and are not guaranteed values.

Specification Table

■ Shape A Dimension Specification Table

Part Number			D	M (Coarse Thread)	F		Allowable Load N			B	D1	r (min.)	G	Bearing Nominal Specifications
Type		d			Standard	Long	Urethane
							Shore A90	Shore A70	Shore A50
Standard External Thread Type E-UMBKH E-UMSBKH E-UMBKWH E-UMSBKWH E-UMBH * E-UMSBH E-UMBWH * E-UMSWH E-UMBGH E-UMBLH E-UMBLWH E-UMBDH	Extended External Thread Type E-UMBKT E-UMSBKT E-UMBKWT E-UMSBKWT E-UMBT * E-UMSWT E-UMBLWT E-UMBDH	3	12	M3	4	6	34	10	6	3	7	0.1	1.5	W683ZZA
		4	13	M4	5	8	44	13	7	4	9	0.15		W684AX50ZZ
			16				59	16	6	5	13	0.2		624ZZ
		5	16										24	WBC5-13ZZ
			20				78	20	9		16	0.3		625ZZ
		6	20	M6	8	12		23	15		15	0.2		696ZZ
			28				157	44	39	6	19	0.3		626ZZ
		8	28					42	35	7	22		4	608ZZ

Types marked with * are not applicable for d3.

The allowable load is a reference value.

kgf=N × 0.1019723

■ B Type Dimension Specification Table

Part Number			D	M (Coarse Thread)	F		Allowable Load N			B	D1	B1	r (min.)	G	Bearing Nominal Specifications
Type		d			Standard	Long	Urethane
							Shore A90	Shore A70	Shore A50
Standard External Thread Type E-UMBKH E-UMSBKH E-UMBKWH E-UMSBKWH E-UMBH E-UMSBH E-UMBWH E-UMSWH E-UMBGH E-UMBLH E-UMBLWH E-UMBDH	Extended External Thread Type E-UMBKT E-UMSBKT E-UMBKWT E-UMSBKWT E-UMBT E-UMSWT E-UMBLWT E-UMBDH	8	30	M6	8	12	176	81	65	11	22	7	0.3	4	608ZZ
		10	30					94	51		26	8		5	6000ZZ
			40				274	136	93		30	9	0.6		6200ZZ
		15	40	M10	12	20		122	96	12	32		0.3		6002ZZ
			45				343	109	102	15	35	11	0.6		6202ZZ

The allowable load is a reference value.

kgf = N × 0.1019723

Product Features

Feature 1: Urethane part is made of Japanese material, with excellent abrasion resistance.
Feature 2: Each model has a reference allowable load, making selection more convenient.
Feature 3: Options are available with austenitic stainless steel shafts and electroless nickel-plated surface treatment.
Feature 4: Urethane is partly sintered on bearing, which is not easy to fall off, and it is suitable for various contact methods.
■ Recommended Contact Method
MiSUMi urethane bearing is also a urethane rubber coated bearing

MiSUMi urethane bearing is also a urethane rubber coated bearing

Precautions

(1) 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

(2) 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.

(3) Changes in the state of the product after hydrolysis
· Polyurethane surface becomes sticky
· Irreversible marks are left when pressed lightly with a fingernail
· Polyurethane hardness decreases
· Polyurethane dries and cracks, easily disintegrating into powder

Hydrolyzed urethane

Function of the R Angle on the Flat-Head Conveyor Mechanism

(4) 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.

Example of Uses

Example of Use 1: Equipment Name: Feature 1: Feature 2:	Pressing mechanism of winding machine Urethane has excellent abrasion resistance and long service life Urethane 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: Equipment Name: Feature 1: Feature 2:	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: Equipment Name: Feature 1: Feature 2:	Gluing mechanism Softer urethane can be selected to increase the adhesion surface between the roll paper and the workpiece. If the adhesive contains chemical properties, silicone rubber material can be selected.

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