Product Description
Product Description
28B-2 roller chain sprockets are manufactured for metric 28B-2 roller chain and is manufactured in accordance with ISO, DIN, and BS228 standards. All of our sprockets are precision manufactured from high-quality steel, and the majority of them are black oxide coated, and have hardened teeth on tooth counts 30 or less. Something important to know note is that on tooth counts 31 and up hardened teeth make little to no performance increase, this is why it is not standard.
Product Parameters
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28B-2 B-Hub Sprockets
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Sprocket Size | Tooth Count | Pitch Diameter | Stock Bore | Max. Bore | Hub Diameter (H) | Length Thru Bore (L) | Weight (kg) |
---|---|---|---|---|---|---|---|
D28B11 | 11 | 157.77mm | 40mm | 73mm | 112mm | 120mm | 10.21 |
D28B12 | 12 | 171.74mm | 40mm | 84mm | 125mm | 120mm | 13.02 |
D28B13 | 13 | 185.74mm | 40mm | 84mm | 130mm | 120mm | 16.00 |
D28B14 | 14 | 199.76mm | 40mm | 84mm | 135mm | 120mm | 19.28 |
D28B15 | 15 | 213.79mm | 40mm | 87mm | 145mm | 120mm | 22.91 |
D28B16 | 16 | 227.84mm | 40mm | 96mm | 160mm | 120mm | 26.92 |
D28B17 | 17 | 241.91mm | 40mm | 108mm | 178mm | 120mm | 30.83 |
D28B18 | 18 | 255.98mm | 40mm | 114mm | 178mm | 120mm | 34.74 |
D28B19 | 19 | 270.06mm | 40mm | 114mm | 178mm | 120mm | 38.93 |
D28B20 | 20 | 284.14mm | 40mm | 133mm | 178mm | 120mm | 44.27 |
D28B21 | 21 | 298.24mm | 40mm | 133mm | 178mm | 120mm | 45.08 |
D28B22 | 22 | 312.34mm | 40mm | 133mm | 178mm | 120mm | 48.15 |
D28B23 | 23 | 326.44mm | 40mm | 133mm | 178mm | 120mm | 51.59 |
D28B24 | 24 | 340.54mm | 40mm | 133mm | 178mm | 120mm | 55.03 |
D28B25 | 25 | 354.65mm | 40mm | 133mm | 178mm | 120mm | 58.47 |
D28B26 | 26 | 368.77mm | 40mm | 133mm | 178mm | 120mm | 64.06 |
D28B28 | 28 | 397.00mm | 40mm | 133mm | 178mm | 120mm | 76.05 |
D28B30 | 30 | 425.24mm | 40mm | 133mm | 178mm | 120mm | 89.16 |
D28B32 | 32 | 453.49mm | 40mm | 133mm | 178mm | 120mm | 103.38 |
28B-2 C-Hub Sprockets
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Sprocket Size | Tooth Count | Pitch Diameter | Stock Bore | Max. Bore | Hub Diameter (H) | Length Thru Bore (L) | Weight (kg) |
---|---|---|---|---|---|---|---|
D28B11 | 11 | 157.77mm | 40mm | 73mm | 112mm | 120mm | 10.21 |
D28B12 | 12 | 171.74mm | 40mm | 84mm | 125mm | 120mm | 13.02 |
D28B13 | 13 | 185.74mm | 40mm | 84mm | 130mm | 120mm | 16.00 |
D28B14 | 14 | 199.76mm | 40mm | 84mm | 135mm | 120mm | 19.28 |
D28B15 | 15 | 213.79mm | 40mm | 87mm | 145mm | 120mm | 22.91 |
D28B16 | 16 | 227.84mm | 40mm | 96mm | 160mm | 120mm | 26.92 |
D28B17 | 17 | 241.91mm | 40mm | 108mm | 178mm | 120mm | 30.83 |
D28B18 | 18 | 255.98mm | 40mm | 114mm | 178mm | 120mm | 34.74 |
D28B19 | 19 | 270.06mm | 40mm | 114mm | 178mm | 120mm | 38.93 |
D28B20 | 20 | 284.14mm | 40mm | 133mm | 178mm | 120mm | 44.27 |
D28B21 | 21 | 298.24mm | 40mm | 133mm | 178mm | 120mm | 45.08 |
D28B22 | 22 | 312.34mm | 40mm | 133mm | 178mm | 120mm | 48.15 |
D28B23 | 23 | 326.44mm | 40mm | 133mm | 178mm | 120mm | 51.59 |
D28B24 | 24 | 340.54mm | 40mm | 133mm | 178mm | 120mm | 55.03 |
D28B25 | 25 | 354.65mm | 40mm | 133mm | 178mm | 120mm | 58.47 |
D28B26 | 26 | 368.77mm | 40mm | 133mm | 178mm | 120mm | 64.06 |
D28B28 | 28 | 397.00mm | 40mm | 133mm | 178mm | 120mm | 76.05 |
D28B30 | 30 | 425.24mm | 40mm | 133mm | 178mm | 120mm | 89.16 |
D28B32 | 32 | 453.49mm | 40mm | 133mm | 178mm | 120mm | 103.38 |
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Company Profile
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Services we can provide
1. Produce strictly following standard dimension
2. Material: 1045 Steel / Alloy Steel / Stainless Steel 304 & 316Â
3. Standard: ANSI, DIN, JINS, ISO, KANA, Standard America, or customer’s drawing
4. Pilot bore, finished bore, taper bore, and special bore.Â
5. Bright surface / high precision / Blacking /Electrophoretic-Coated
6. Advanced heat treatment and surface treatment craft
7. Best quality and competitive price.Â
8. Welcome OEM / ODMÂ
9. Processing Equipment: Hobbing machine, Slotting machine, CNC lathes, and other equipment.
10. Sprocket Models:Â Contains special sprocket according to customer’s drawings, standard sprocket (American standard and metric).
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Customization process
1.Provide documentation:CAD, DWG, DXF, PDF,3D model ,STEP, IGS, PRT
2.Quote:We will give you the best price within 24 hours
3.Place an order:Confirm the cooperation details and CZPT the contract, and provide the labeling service
4.Processing and customization:Short delivery time
Related products:
Factory:
As a professional China sprocket  manufacturer and professional supplier, we ensure the quality of every sprocket. All items are checked and tested thoroughly during every working procedure and after the product is finally manufactured to ensure that the best quality product goes out in the market.
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Standard Or Nonstandard: | Standard |
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Application: | Motor, Motorcycle, Machinery, Agricultural Machinery, Car |
Hardness: | Hardened Tooth Surface |
Manufacturing Method: | Rolling Gear |
Toothed Portion Shape: | Spur Gear |
Material: | Stainless Steel |
Samples: |
US$ 9999/Piece
1 Piece(Min.Order) | |
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What are the Temperature Limits for the Operation of Metric Sprockets?
The temperature limits for the operation of metric sprockets depend on several factors, including the material composition of the sprocket and the specific application conditions. Different materials have varying temperature tolerances, and it’s essential to choose a sprocket material suitable for the intended operating environment.
Common materials used in metric sprockets and their approximate temperature limits are as follows:
- Steel Sprockets: Steel sprockets, particularly those made from carbon steel or alloy steel, have a broad temperature range and can typically operate in temperatures ranging from -40°C to 400°C (-40°F to 752°F).
- Stainless Steel Sprockets: Stainless steel sprockets offer excellent corrosion resistance and can operate in temperatures between -20°C to 400°C (-4°F to 752°F).
- Plastic or Nylon Sprockets: Plastic sprockets, such as those made from nylon, have a more limited temperature range and are suitable for temperatures around -20°C to 100°C (-4°F to 212°F).
It’s crucial to consider the application’s temperature requirements when selecting the appropriate sprocket material. Factors such as ambient temperature, exposure to extreme heat or cold, and potential temperature fluctuations during operation should be taken into account.
Additionally, high-temperature applications may require specialized heat-resistant lubricants to ensure smooth operation and reduce wear. Proper lubrication is essential to maintain sprocket performance and prevent premature failure.
Always refer to the manufacturer’s specifications and guidelines to determine the specific temperature limits of the metric sprockets you intend to use. Manufacturers often provide detailed information about the temperature range their sprockets can withstand and any other considerations related to temperature and performance.
By selecting metric sprockets that align with the temperature requirements of your application and providing appropriate lubrication, you can ensure the reliable and efficient operation of the sprocket system even in challenging temperature conditions.
Can Metric Sprockets be Customized or Modified for Specific Machinery or Equipment?
Yes, metric sprockets can be customized or modified to suit specific machinery or equipment requirements. Customization is often necessary in industrial applications where standard off-the-shelf sprockets may not fully meet the unique needs of the system.
Here are some common scenarios where customization or modification of metric sprockets might be required:
- Non-Standard Sizes: In cases where the required sprocket size is not available as a standard option, manufacturers can produce custom metric sprockets with specific diameters, numbers of teeth, or pitch sizes to match the application.
- Special Materials: Certain applications may demand sprockets made from specialized materials with unique properties, such as extreme temperature resistance or high corrosion resistance. Custom sprockets can be fabricated from these materials to withstand challenging operating conditions.
- Keyway or Set Screw Additions: Custom metric sprockets can be designed with keyways or set screw holes to ensure secure and precise attachment to shafts or hubs.
- Attachment Features: Some applications may require additional features or attachments on the sprocket, such as mounting flanges, timing belt pulleys, or chain guides, which can be incorporated into custom sprocket designs.
- Teeth Modifications: Customization allows for tooth profile alterations or specific tooth geometries to optimize sprocket engagement with the roller chain or belt, leading to smoother operation and reduced wear.
- Special Coatings: Custom sprockets can be coated with specialized materials or coatings to enhance their performance, such as adding lubrication-retaining coatings or improving wear resistance.
- Application-Specific Requirements: In unique or complex machinery, sprockets may need to be customized to accommodate specific design constraints, space limitations, or load-bearing capacities.
Working with a reputable sprocket manufacturer or supplier is crucial when considering customization or modification. They can provide engineering expertise and guidance to ensure the custom sprockets meet the necessary specifications and performance requirements.
Keep in mind that while customization offers tailored solutions, it may involve higher costs and longer lead times compared to standard off-the-shelf sprockets. However, the benefits of a properly customized sprocket, such as improved system performance, longer service life, and reduced maintenance, can outweigh these considerations in critical industrial applications.
When seeking custom metric sprockets, collaborate closely with the manufacturer to communicate your specific needs, system requirements, and any necessary design constraints. With effective customization, metric sprockets can seamlessly integrate into your machinery or equipment, contributing to the overall efficiency and reliability of the system.
What is a Metric Sprocket, and How is it Different from Standard Sprockets?
A metric sprocket is a type of sprocket that follows the metric measurement system, commonly used in many countries around the world. It differs from standard sprockets, which are based on the imperial measurement system (inches and fractions). The main differences between metric sprockets and standard sprockets are as follows:
- Measurement Units: Metric sprockets use metric units, such as millimeters (mm) for pitch diameter, number of teeth, and other dimensions. Standard sprockets, on the other hand, use inches and fractional inches for the same measurements.
- Pitch: The pitch of a sprocket refers to the distance between the centers of two consecutive chain roller pins. Metric sprockets have a pitch measured in millimeters, while standard sprockets have a pitch measured in inches.
- Teeth Configuration: The number of teeth on a metric sprocket is specified using metric units, such as 16 teeth or 25 teeth. Standard sprockets use inch-based measurements, like 24 teeth or 40 teeth.
- Availability: The availability of metric sprockets may vary depending on the region and industry standards. In some countries that primarily use the metric system, metric sprockets are more common and readily available than standard sprockets.
- Interchangeability: Due to the difference in pitch and tooth configuration, metric sprockets are generally not interchangeable with standard sprockets. Each type of sprocket requires a matching chain with the corresponding pitch and tooth count.
- International Standards: Metric sprockets are often designed and manufactured according to international standards such as ISO (International Organization for Standardization), while standard sprockets may conform to ANSI (American National Standards Institute) or other regional standards.
When selecting a sprocket for a specific application, it is crucial to choose the correct type (metric or standard) that matches the chain’s pitch and the overall system requirements. Using the wrong type of sprocket or chain can lead to compatibility issues, increased wear, and reduced efficiency of the power transmission system.
Whether to use metric sprockets or standard sprockets depends on the industry, geographical location, and the prevailing measurement system in the region. Consulting with sprocket manufacturers or conveyor system experts can help ensure the right sprocket choice for your specific application.
editor by CX 2024-03-30