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#CODE
- Discontinued Products
Conveyor Bearings - Urethane/silicone/rubber covered, R type.
- Volume Discount
- Lead Time Reduction
•Type: Type R
•Operating Environment: Standard
•Mounting Style: Hole
•Bearing Material: 440C Stainless Steel
- inCAD Components
Part Number
Configured Part Number is shown.
・Materials
| Type | [ M ] Material | [ H ] Hardness | Color | |
| Bearing | ||||
| Steel (52100 Bearing Steel) | Stainless Steel (440C Stainless Steel) | |||
| UMBBR | UMSBR | Urethane | Shore A90 | Black |
| UMBWR | UMSWR | White | ||
| SUMBBR | - | Silicon Rubber | Shore A70 | Light Gray |
Specifications
| Part Number | - | D |
| UMBBR25 | - | 65 |
■Shape A
[ ! ]Only d4~8 are available for * marked types.
[ ! ]Allowable load is for reference.
| Part Number | D | Allowable Load N (kgf) | B | D1 | r (min.) | R | Relative Dimension | Bearing Used | ||||||
| Type | d | Urethane | Silicon | (min.) Ds (max.) | R1 (max.) | |||||||||
| Shore A90 | Shore A70 | |||||||||||||
| Urethane UMBBR *UMSBR UMBWR *UMSWR Silicon Rubber SUMBBR | 3 | 12 | 34 | (3.5) | 9.8 | (1) | 3 | 7 | 0.1 | 5 | 3.9 | 4.1 | 0.1 | W683ZZA |
| *4 | 13 | 44 | (4.5) | 13 | (1.3) | 4 | 9 | 0.15 | 5 | 5.2 | W684AX50ZZ | |||
| 16 | 59 | (6) | 18 | (1.8) | 5 | 13 | 0.2 | 5.6 | 6.2 | 0.2 | 624ZZ | |||
| *5 | 16 | 6.6 | 6.9 | WBC5-13ZZ | ||||||||||
| 20 | 78 | (8) | 24 | (2.4) | 16 | 0.3 | 7 | 7.6 | 0.3 | 625ZZ | ||||
| *6 | 20 | 15 | 0.2 | 7.6 | 7.8 | 0.2 | 696ZZ | |||||||
| 28 | 157 | (16) | 47 | (4.8) | 6 | 19 | 0.3 | 8 | 9.5 | 0.3 | 626ZZ | |||
| *8 | 28 | 176 | (18) | 7 | 22 | 10 | 12.2 | 608ZZ | ||||||
[ ! ]Allowable load is for reference.
■Shape B
[ ! ]Allowable load is for reference.
| Part Number | D | Allowable Load N (kgf) | B | D1 | B1 | r (min.) | R | Relative Dimension | Bearing Used | ||||
| Type | d | Urethane | Silicon | (min.) Ds (max.) | R1 (max.) | ||||||||
| Shore A90 | Shore A70 | ||||||||||||
| Urethane UMBBR UMSBR UMBWR UMSWR Silicon Rubber SUMBBR | 8 | 30 | 176(18) | 53(5.4) | 11 | 22 | 7 | 0.3 | 15 | 10 | 12.2 | 0.3 | 608ZZ |
| 10 | 30 | 26 | 8 | 12 | 13.5 | 6000ZZ | |||||||
| 40 | 274(18) | 82(8.4) | 30 | 9 | 0.6 | 14 | 16 | 0.6 | 6200ZZ | ||||
| 15 | 40 | 12 | 32 | 0.3 | 17 | 19 | 0.3 | 6002ZZ | |||||
| 45 | 343(35) | 103(10.5) | 15 | 35 | 11 | 0.6 | 19 | 20 | 0.6 | 6202ZZ | |||
| 20 | 45 | 12 | 37 | 9 | 0.3 | 22 | 24 | 0.3 | 6904ZZ | ||||
| 55 | 490(50) | 147(15) | 18 | 47 | 14 | 1 | 20 | 25 | 28 | 1 | 6204ZZ | ||
| 25 | 65 | 750(70) | 226(23) | 19 | 52 | 15 | 30 | 32 | 6205ZZ | ||||
Price list
| d | D | Unit Price | ||
| Steel Bearing | Stainless Steel Bearing | |||
| Urethane (Shore A90) | Silicon Rubber (Shore A70) | Urethane (Shore A90) | ||
| UMBBR UMBWR | SUMBBR | UMSBR UMSWR | ||
| 3 | 12 | 730 | 1,050 | - |
| 4 | 13 | 990 | 860 | |
| 16 | 720 | |||
| 5 | 16 | 920 | ||
| 20 | ||||
| 6 | 20 | 740 | 1,100 | 970 |
| 28 | 1,140 | |||
| 8 | 28 | |||
| 30 | 1,080 | 1,440 | 1,190 | |
| 10 | 30 | 1,110 | - | |
| 40 | 1,130 | 1,500 | - | |
| 15 | 40 | 1,100 | 1,570 | - |
| 45 | 1,150 | 1,600 | - | |
| 20 | 45 | 1,180 | 1,940 | - |
| 55 | 1,370 | 1,790 | - | |
| 25 | 65 | 1,550 | 2,120 | - |
■Volume Discount Rate ([ ! ]Round down to nearest one cent.) P.89
[ ! ]For orders larger than indicated quantity, please request a quotation.
| Quantity | 1~19 | 20~34 | 35~49 | 50~99 |
| Discount Rate | Unit Price | 5% | 15% | 30% |
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.
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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 |
|---|---|---|---|---|
 |  |  |  | |
| 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
Basic Information
| Type | Type R | Mounting Style | Hole | Operating Environment | Standard (for Light Load) |
|---|
Specification/Dimensions
-
Bearing material
- Stainless Steel
- Stainless Steel
-
Surface Material
- Urethane
- Silicon Rubber
- Urethane
-
Outer Diameter D(Ø)
-
Width B(mm)
-
I.D. d(Ø)
-
Allowable Load Range(N)
-
Allowable Load(N)
-
Hardness
- Shore A70
- Shore A90
-
Color
- Black
- Light Gray
- White
-
type
- SUMBBR
- UMBBR
- UMBWR
- UMSBR
- UMSWR
-
CAD
- 2D
- 3D
Days to Ship
-
- All
- 10 Days or Less
- 12 Days or Less
Specify Alterations
- The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .
Additional Products in this Category
- Conveyor Bearings - Light load.
- Conveyor Bearings - Heavy load.
- Conveyor Bearings - Eccentric bore bushing.
- Conveyor Bearings - Engineering plastic, plain type, straight bore.
- Conveyor Bearings - Engineering plastic, round type, threaded stem.
- Conveyor Bearings - Engineering plastic, R type (round) with bracket.
- Conveyor Bearings - Engineering plastic, V groove, threaded bore.
- Conveyor Bearings - Engineered plastic, flanged on one edge, and threaded stem.
Complementary Products
-
Conveyor Bearings - Silicone/urethane rubber, threaded shaft.
MISUMI Days to Ship : Same day or more
MISUMI Unit Example related to this product
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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