Rollers / Straight / Holes f fixing screws / Polyurethane rubber thickness selectable (RONHA25-12-20)
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Product Details:
Manufacturer part number: RONHA25-12-20
Brand: MISUMI
Price: 42.00 €
Delivery time: 10 Days
Technical Data:
[D] Outer Diameter: 25 mm
Material (Base, Core): [Aluminum] Aluminum Alloy 5000 series
[L] Length (Range): Up to 50 mm
I.D. d: 12 mm
Urethane/Rubber Material: Urethane
Part Number
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RONHA25-12-20
- Drawing / Specifications
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Back to the Category Idler Rollers
Technical Drawing - Roller with Bearings
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Available dimensions and tolerances can be found under the tab More Information.
Basic Properties (e.g., material, hardness, coating, tolerance) - Roller with Bearings
| L Selectable | Urethane Thickness Selectable, L Configurable | Material | Hardness | ||
| Set Screw Holes at Both Ends | Set Screw Hole at One End | Set Screw Holes at Both Ends | Core | Lining | |
| RONUS | ROEKUS | ROENUS | EN 1.4301 Equiv. | Urethane (Natural Color) | Shore A90 |
| RONUA | ROEKUA | ROENUA | EN AW-5052 Equiv. | ||
| RONGS | ROEKGS | - | EN 1.4301 Equiv. | Shore A70 | |
| RONGA | ROEKGA | ROENGA | Aluminum Alloy 5000 series | ||
| RONHA | ROEKHA | ROENHA | EN AW-5052 Equiv. | Shore A50 | |
| RONSS | - | - | EN 1.4301 Equiv. | Silicon Rubber | Shore A70 |
| RONSA | - | - | EN AW-5052 Equiv. | ||
| RONTS | - | - | EN 1.4301 Equiv. | Heat Resistant Urethane (Red Brown) Operating Temperature: ~ 110°C | Shore A90 |
Further specifications can be found under the tab More Information.
Composition of a Product Code - Roller with Bearings
| Part Number | - | d | - | L | - | T |
| RONSS20 ROEKUA50 | - - | 8 15 | - - | 30 80 | - | T10 |
Alterations - Roller with Bearings
General Information - Roller with Bearings
Selection details of roller bearings
- Core material: aluminum, steel, stainless steel, plastic (POM, UHMWPE, polypropylene, MC nylon)
- Coatings: uncoated, burnished, nickel-plated, anodized
- Material surface: uncoated, polyurethane, antistatic polyurethane, heat-resistant polyurethane (~110°C), polyurethane foam, chloroprene rubber foam, silicone rubber, silicone rubber, nitrile rubber (NBR)
- Hardness: Shore A25, Shore A50, Shore A65, Shore A70, Shore A90, Shore A95
- Surface shape: cylindrical, spherical, groove (split running surface), flange on both sides, knurled
- Roller mounting: through hole, ball bearing, plain bearing bushing, threaded pin clamping, keyway, with axle shaft, lateral through holes
- Bearing material: steel, stainless steel
- Inner diameter: 3 to 40 mm
- Outer diameter: 8 to 100 mm
- Length: 50 to 1000 mm
Description/Basics
The range of applications for roller bearings is diverse in the industry. Basically, the roller bearing is used in mechanical engineering and system engineering for the transport of different objects and workpieces. They are often found in roller conveyors and the conveyance or return of fine films in the packaging industry (packaging).
MISUMI offers different roller bearing surfaces depending on the type of material being conveyed and the application. Whether a gentle rubberized roller bearing for sensitive goods has to be transported, a metal roller, or a massive roller bearing for heavy loads, the MISUMI online shop offers the appropriate roller bearing for almost any application and environmental influences.
A rubberized roller bearing can be equipped with different elastomers to withstand the requirements and influences. These can have different properties such as oil resistance, weather resistance or chemical resistance. MISUMI also offers a rubberized roller bearing with heat-resistant polyurethane (PUR) for higher temperatures.
MISUMI offers an antistatic roller bearing made of polyurethane for transporting electronic components that must be protected against static discharge via the option [UDC].Our roller bearings with foam are a special feature. Compared to conventional foams, the roller bearing with polyurethane foam has a low absorption of water, oil and chemicals. This is made possible by the closed pores of the foam. Another significant advantage of combining a roller bearing with polyurethane foam is the vibration-damping properties of the foam. Roller bearings with foam are also suitable for transporting thinner materials.
A roller bearing with chloroprene rubber foam is particularly low-return and has a high resistance to weather, aging, ozone, heat and cold. This makes it a very balanced foam that is often used in the general industry.
In addition to the materials of the tread, different geometries are also available for various purposes.
Cylindrical roller bearings are often used for roller conveyors or roller carriers.
Balled roller bearings, on the other hand, are often used in conveyor belts in combination with flat belts. The spherical shape of the roller bearing can help align the transport belt in the centre. For flat belts with guide grooves, we offer special flat belt drive wheels that centre the belt more precisely.
Cylindrical roller bearings are often used in roller conveyors or roller carriers. Balled roller bearings are on the other hand often used in conveyor belts in combination with flat belts. The balled shape of the roller bearing can help align the transport belt in the centre. For flat belts with guide grooves, we offer special flat belt drive wheels that centre the belt more precisely.
The roller bearings and metal rollers from MISUMI can be selected in numerous mounting options. In addition, MISUMI offers the roller bearing with clamping groove, plain bearing bushing, integrated axle, lateral mounting holes and keyway.
The roller bearing with keyway groove is particularly suitable in combination with a keyway and rotary axis as a driven roller bearing or conveyer roller. This PDF gives you the keyways tolerances. It is recommended selecting a keyway from MISUMI for the connection, since the tolerances are coordinated.
A roller bearing is often also used in combination with ball bearings. The load capacity depends on the bearing used. The roller bearings with ball bearings are characterized by good smoothness. You can find which bearing was used for the metal roller with ball bearing under the tab More Information.
Rollers with larger outer diameters can also be found under our pipe rollers.
Application Examples - Roller with Bearings
Application example: stack sorter
(1) Roller bearing rubberized, (2) workpiece, (3) plastic plate
Application example: belt conveyor
(1) Belt, (3) split roller bearing (groove), (3) roller bearing
Application example roller conveyor
(1) Vertical guide rollers, (2) roller belt, (3) roller bearing
Application example: roller conveyor
(1) Plastic roller bearing, (2) rotary axes
Industrial Applications
Part Number:
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Part Number
|
|---|
| RONHA25-12-20 |
| Part Number |
Standard Unit Price
| Minimum order quantity | Volume Discount | RoHS | [D] Outer Diameter (mm) | Material (Base, Core) | [L] Length (Range) (mm) | I.D. d (mm) | Urethane/Rubber Material | Urethane/Rubber Hardness | Urethane/Rubber Color | [L] Length (mm) | L | T (mm) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
42.00 € | 1 | Available | 10 Days | 10 | 25 | [Aluminum] Aluminum Alloy 5000 series | Up to 50 | 12 | Urethane | 50 | Natural Color | 20 | - | - |
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Technical Drawing - Roller with Bearings
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Specification Tables - Roller with Bearings
■ L Selectable (Set Screw Holes at Both Ends Type Only)
| Part Number | dH7 Selection | L Selection | T | B | M | |||||||||||
| Type | D | |||||||||||||||
| RONUS RONUA RONGS RONGA | RONHA RONSS RONSA RONTS | 20 | 8 | 15 | 20 | 25 | 30 | 40 | 50 | 3 | 8 | M3 | ||||
| 25 | 8 | 10 | 12 | 15 | 20 | 25 | 30 | 40 | 50 | |||||||
| 30 | 8 | 10 | 12 | 15 | 15 | 20 | 25 | 30 | 40 | 50 | ||||||
| 35 | 10 | 12 | 15 | 20 | 25 | 30 | 40 | 50 | M4 | |||||||
| 40 | 10 | 12 | 15 | 20 | 25 | 30 | 40 | 50 | ||||||||
| 50 | 12 | 15 | 25 | 30 | 40 | 50 | 100 | 10 | M5 | |||||||
■ Urethane Thickness Selectable (Set Screw Holes at One End / Both Ends)
| Part Number | dH7 Selection | L 10mm Increment | T Selection | B | M | |||||||
| Type | D | |||||||||||
| Set Screw Hole at One End ROEKUS ROEKUA ROEKGS ROEKGA ROEKHA | Set Screw Holes at Both Ends ROENUS ROENUA ROENGA ROENHA | 40 | 10 | 12 | 15 | 30~50 | 5 | 10 | M5 | |||
| 50 | 10 | 12 | 15 | 30~100 | 5 10 | |||||||
| 60 | 12 | 15 | 20 | |||||||||
| 80 | 15 | 20 | 25 | 12 | M6 | |||||||
| 100 | 20 | 25 | 30 | |||||||||
Alterations - Roller with Bearings
Basic information
| Roller Type | Urethane, Rubber Roller | Urethane Rubber Processing | Lining | Mounting Method | Set Screw |
|---|---|---|---|---|---|
| Roller Shape | Straight | Surface Treatment | Not Provided |
This page is Rollers / Straight / Holes f fixing screws / Polyurethane rubber thickness selectable, part number RONHA25-12-20.
You can find the detail information about specifications and dimensions on part number RONHA25-12-20.
Configure
Basic Attributes
-
L
-
T(mm)
-
Type
- ROEKGA
- ROEKGS
- ROEKHA
- ROEKUA
- ROEKUS
- ROENGA
- ROENHA
- ROENUA
- ROENUS
- RONGA
- RONGS
- RONHA
- RONSA
- RONSS
- RONTS
- RONUA
- RONUS
-
[D] Outer Diameter(mm)
-
Material (Base, Core)
- Aluminum
- EN 1.4301 Equiv.
- Aluminum
-
[L] Length (Range)(mm)
- Up to 50
- Up to 100
-
I.D. d(mm)
-
Urethane/Rubber Material
- Heat Resistant Urethane
- Silicon Rubber
- Urethane
-
Urethane/Rubber Hardness
- 50
- 70
- 90
-
Urethane/Rubber Color
- Light Gray
- Natural Color
- Red Brown
-
[L] Length(mm)
-
Filter by CAD data type
- 2D
- 3D
Optional Attributes
Please note that the Shore hardness will increase to A90 if you select option [UDC].
- The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .
Frequently Asked Questions (FAQ)
-
Question:
How is the foam attached to the support roller?
-
Answer:
The foam is pressed onto the roller bearing (core material). In order to prevent the foam from slipping or severely deforming, it should be ensured that the load is uniformly distributed.
-
Question:
Can the polyurethane layer be replaced?
-
Answer:
The polyurethane layer is generally vulcanized onto the roller bearing. If the polyurethane layer is heavily worn, it is therefore recommended replacing the roller bearing as one unit. Please see the basic properties, in order to find out if the polyurethane layer is vulcanized.
-
Question:
Are the polyurethane rollers oil resistant?
-
Answer:
The polyurethane roller bearings are only partially resistant to oil. These can be swelled and damaged by oil. For this purpose, MISUMI offers roller bearings with a nitrile rubber layer that is oil-resistant. Nitrile rubber (NBR) is often used for sealing rings due to this property. You can view further information in the rubber properties available as a PDF.
-
Question:
Are the roller bearings with PU coating suitable as a drive pulley?
-
Answer:
MISUMI offers roller bearings with tightening screws or with a keyway that can be used as a roller pulley. Especially the roller bearing with a keyway in combination with a parallel key (machine key) ensures a good transmission of rotational movements.
Variation of this product
| Part Number |
|---|
| RONGA20-8-30 |
| RONGA20-8-40 |
| RONGA20-8-50 |
| RONHA25-12-25 |
| RONHA25-12-30 |
| RONHA25-12-40 |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Standard Shipping Days ? | RoHS | [D] Outer Diameter (mm) | Material (Base, Core) | [L] Length (Range) (mm) | I.D. d (mm) | Urethane/Rubber Material | Urethane/Rubber Hardness | Urethane/Rubber Color | [L] Length (mm) | L | T (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
41.62 € | 1 | Available | 10 Days | 10 | 20 | [Aluminum] Aluminum Alloy 5000 series | Up to 50 | 8 | Urethane | 70 | Natural Color | 30 | - | - | |
41.62 € | 1 | Available | 10 Days | 10 | 20 | [Aluminum] Aluminum Alloy 5000 series | Up to 50 | 8 | Urethane | 70 | Natural Color | 40 | - | - | |
41.62 € | 1 | Available | 10 Days | 10 | 20 | [Aluminum] Aluminum Alloy 5000 series | Up to 50 | 8 | Urethane | 70 | Natural Color | 50 | - | - | |
42.00 € | 1 | Available | 10 Days | 10 | 25 | [Aluminum] Aluminum Alloy 5000 series | Up to 50 | 12 | Urethane | 50 | Natural Color | 25 | - | - | |
43.53 € | 1 | Available | 10 Days | 10 | 25 | [Aluminum] Aluminum Alloy 5000 series | Up to 50 | 12 | Urethane | 50 | Natural Color | 30 | - | - | |
43.53 € | 1 | Available | 10 Days | 10 | 25 | [Aluminum] Aluminum Alloy 5000 series | Up to 50 | 12 | Urethane | 50 | Natural Color | 40 | - | - |
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