Tag Archives: bike motor

China Custom 11 Tooth Sprocket Motor Pinion Gear 10mm Double D-Bore for 25H Chain Electric Scooter Parts sprocket bike shop

Applicable Industries: Manufacturing Plant, Machinery Repair Shops, Farms, Printing Shops
Material: hardened steel
Standard: ISO
Tooth number: 11
Fit Chain: 25H
Pitch(mm): 6.35
Tooth Thickness (mm): 2.3
Inner hole Diameter (mm): 10
Outer Diameter(mm): 25
Compatible with: MY1571 motors
Packaging Details: pp pag, carton

11 Tooth Sprocket Motor Pinion Gear 10mm Double D-Bore for 25H Chain Electric Scooter PartsPlease make sure the size of your motor before you place the orderTeeth 11Fit Chain 25HPitch(mm) 6.35Tooth Thickness 2.3mmInner hole Diameter D1(mm) 10Inner hole Diameter D2(mm) 8.5Height(mm) 4Outer Diameter(mm) 25 Our Factory HangZhou Yuan Jun Trade Co., Ltd. is a specialized supplier of electric scooter accessories, electric bicycle accessories, sports products, such as kick scooters, skateboards. We have been devoted to this area for more than 2 years, located in the Hardware Hometown–HangZhou, ZHangZhoug, China. We have good quality and competitive price for our products. Our long-term relationship with buyers in North America, Europe, Australia and Asia has given us familiarity with many markets. Therefore we can simplify your international sourcing experience. You are welcome to cooperate with our company. FAQQ: What is your payment terms?A1: When order amount less 5000USD, Z14-3055 Keyless locking assembly adjustable safe locking device Factory Direct Sale high power transmission power lock 100% TT Advance.A2: When above 5000USD, 50% deposit,balance before shipment by TT.A3: Except the TT, we also accept L/C,Western union, paypal, moneygram. Q: What is your delivery time?A1: For stock items, delivery time around 7days;A2: For small order common item, delivery time around 7-15days;A3: For Mass order common item, delivery time around 20-30days;A4: For special making item, per the real situations discussed with our sales person. Q: Can you offer OEM or ODM?A:Yes,we can! Female Elegant 12 Zodiac CZPT Zodiac Necklace Stainless Steel Pendants Charm Gold Chain Choker Astrology Necklaces But we need client offer clear drawing or sample. Q: Can you company offer door to door service?A:Yes,we can offer the door to door service not only express,also sea shipment. Q: What’s your shipment method?A: We ship by Express FEDEX, UPS, DHL, EMS, ARAMEX. All express freight is charged in your end.

Shipping (Normally arrive port time in working days)
Destination Express/CourierDHL/FedEx/TNT/UPS Ship via sea Ship via air Ship via EMS Ship via ePacket
North America 3-7 days 15-24 days 5-8 days 7-12 days 8-15 days
South America 3-7 days 15-25 days 5-8 days 7-12 days 10-15 days
European countries 3-7 days 20-30 days 5-8 days 7-12 days 8-15 days
Africa countries 3-7 days 45-50 days 5-8 days 7-12 days 10-15 days
The Middle East 3-7 days 15-25 days 5-8 days 7-12 days 8-15 days
Australia 3-7 days 10-15  Evil Eyes Black Red String Pinky Swear Promise Couple Bracelets with Make a Wish Card days 5-8 days 7-12 days 8-15 days


How to Identify a Sprocket

When choosing a sprocket, you have several options. There are several types, each with unique features. In this article, we’ll discuss how to identify sprockets, and how to replace worn or damaged sprockets.

buy sprockets

When building a bicycle, sprockets are an important part of the drivetrain. Unfortunately, they’re hard to find outside of places like CZPT. Fortunately, there are some easy ways to find the right sprocket for your bike.
The first thing to consider is what kind of sprocket you need. Choosing the wrong sprocket can damage your equipment or cause it to fail prematurely. While sprockets come in a variety of sizes, there are some key features that can help you find the right one.
There are two basic types of sprockets. You can choose one made of steel or aluminum, or a combination of both. Most sprockets are made of steel, but there are also new aluminum sprockets that are similar to steel and last as long as steel. No matter which material you choose, it’s important to choose a reputable manufacturer with regular maintenance.
Buying sprockets that match your chain is another way to ensure proper installation. The chain goes through the sprockets thousands of times per minute, so the teeth eventually wear out. Poorly maintained sprockets can also cause “hook” teeth, which will cause your chain to stretch to the point where you can no longer adjust it.

Identify sprockets

One of the most common bicycle parts is the sprocket, which can be identified by its width and number of teeth. A single sprocket has one tooth along its circumference, while a double sprocket has two rows of teeth. Sprockets are also known by different names, including single, double, triple, and quadruple sprockets.
Roller sprockets are another type of sprocket. It runs along a chain of rollers connected by pins. It fits into the gap between the rollers in the chain to transfer kinetic energy. There are two basic styles of roller sprockets: single pitch and double pitch. Single-pitch sprockets are small and fit snugly against the equipment, while double-pitch sprockets are larger and require more thickness to support the weight.
Checking a sprocket is easy if you know how to count teeth. A simple caliper will allow you to easily find sprockets with worn teeth. Calipers also allow you to measure the hole of the sprocket, which is the inside diameter of the sprocket.
Another way to tell if a sprocket is worn is to visually inspect the sprocket. Worn sprockets can cause the chain to bounce, putting more pressure on the bearings and accelerating wear. It is also important to check the alignment of the sprockets. If it’s off center, it probably means the chain needs to be replaced.

Replace sprocket

If you want to maintain your bike, it’s a good idea to replace your chain and sprockets regularly. If you don’t, you may have a problem that will only get worse. Worn chains can also make noise, so it’s a good idea to check them regularly. Also, you should lubricate and tighten them regularly, especially when they reach their maximum mileage.
First, you need to determine the size of the chain. Usually, you’ll find it in the manual. Common sizes are 520, 525, and 530. The first number refers to the pitch of the chain, which is the distance between the rivets, while the second number refers to the width of the sprocket. For example, a 20-tooth sprocket is two and a half inches wide.
Replacing a sprocket is a relatively simple process. Be sure to clean the bike and apply wheel bearing grease before tackling the task. Next, remove the old chain from the rear wheel. Some bikes may have clevises or side panels that need to be removed. A flat-blade screwdriver works well for this problem. You can also use the Broken Links tool to remove split links.
You can also install new sprockets on your bike. After removing the old one, be sure to follow the manufacturer’s instructions for chain and sprocket size. You should also tighten the sprocket nut to the manufacturer’s torque setting. Once you’ve done this, be sure to check the chain tension to make sure it’s not too loose or too tight.

Replace worn chains

To prevent damage to the chain, the chain must be replaced regularly. It’s prone to wear and tear, but you can extend the life of your bike’s chain with a few simple steps. One of the steps is to lift the rear wheel of the bike so you can run the new chain through the rear derailleur. This will make the task easier because your bike won’t be lying on the floor. If you don’t have a bike rack, you can use cinder blocks, wood, or boxes to support your bike rack.
The most obvious sign is yIf your chain bounces under load, our chainrings need to be replaced. Using a chain gauge will let you know when you need a new chain. Chain gauges usually consist of two sides and are used to measure the amount of wear on the chain under a given load. You can check the gauge by placing it on the chain and making sure it sinks into the chain.
First, you need to delete the old chain. Some older chains use uniform pins that you can use to replace them. Make sure to get a chain that is the same length as the old one. Also, pay attention to the type of drivetrain your bike has. For example, if it has a rear derailleur, you will need a chain that matches the same drivetrain.

Check the sprocket for rust

One of the best ways to check your bike for rust is to look for surface rust. This is the first sign that the metal is starting to oxidize. Using a steel brush to remove surface rust is a good idea, but be sure to wear safety glasses. You can also clean the sprockets with WD-40 or kerosene.
Another indicator that a sprocket needs to be replaced is excessive wear. This may be caused by foreign objects conveyed by the chain. It may also be necessary to center the chain and drive sprocket and install guide rollers. Other signs of sprocket rust include excessive vibration due to improperly machined axle holes or a bent or bent chain.
You should also look for any kinks in the chain. If so, you may need to replace the chain. Also, look for any rust spots and excess grease. Also, you should check the sprockets to make sure they are properly aligned.
Besides rust, another sign of rust is the chain jumping out of the sprocket. This can cause the chain to jam and cause your bike to slip. This situation is also dangerous for you and other drivers.

Replace worn sprockets

You can repair your bike’s gears by replacing the sprockets. You should always check the chain for any signs of wear. In the case of a worn sprocket, you should check the teeth, which are usually tall and hooked.
If the sprocket is curled, skewed, or uneven, the sprocket is worn and needs to be replaced. If the sprockets are not replaced, they will wear out the chain very quickly. Chains should be replaced as soon as they show signs of excessive wear.
To replace a worn sprocket, you must first remove the old rear sprocket. To do this, loosen the bolts that hold the sprocket in place. You should also clean the hub surface with steel wool to reduce corrosion and wear.
Worn sprockets have worn teeth that keep the roller chain from slipping. This can cause the chain to climb up the sprockets and make a lot of noise. In addition to noise, chains can stick to worn sprockets and damage sprockets and chain. Don’t wait until the chain is out of control to fix it.
After the sprocket is removed, the rear sprocket and drive sprocket can be replaced. It is important to check the alignment of the sprockets, as incorrect alignment can cause premature chain wear. Proper alignment will distribute the load evenly across the entire width of the chain, extending the life of the chain. You can check the sprocket with a ruler or laser sight tool.

China Custom 11 Tooth Sprocket Motor Pinion Gear 10mm Double D-Bore for 25H Chain Electric Scooter Parts   sprocket bike shopChina Custom 11 Tooth Sprocket Motor Pinion Gear 10mm Double D-Bore for 25H Chain Electric Scooter Parts   sprocket bike shop
editor by Cx 2023-07-12

China QS138 4000W 90H 7500W Max continuous 72V 100KPH Mid drive Motor For Off road Bike and ATV hp sprocket

Voltage: 72V
Style: Brushless
Style: Sprocket
Design Quantity: ZZ-138-4000W
Rated Electricity: 4000W
Max Electricity: 8000-10000W
Rated voltage: 72V
Excess weight: 16kg
Performance: 89-92%
Battery: 72V40Ah
Pace: 100km/H
Recommend Reduction Ratio: 1:4.77
Propose Tire: a hundred and twenty/70-12
Advise rim: 12Inch
Packaging Specifics: carton

QSMOTOR 138 4000W 90H 7500W Max steady 72V 100KPH Mid drive Motor For 138 4000W mid generate motor , it could be utilized for electric powered gentle motorcycle, YVF Collection 100hp Frequency Variable and Pace Adjustable A few Period motor YVP electric dc motor for Variator which could be 72V 100KPH.
What’s much more, Manufacturing facility custom casting CNC aluminum stainless motorcycle Sprocket other engine spare elements casting we give chain equipment adapters as default.
P.S. If you have any puzzled about the shipping and delivery price, make sure you come to feel free of charge to get in touch with with us.
Also could spot buy but don’ Motorbike refitted components are applicable to CZPT Ninja400CNC aluminum alloy front sprocket chain guard t spend very first, then we could change the cost.

A single set like under kits
1. 1pc X QS 138 4kW Mid generate motor with 14T 428 sprocket adapter

Crucial Features
1) Light-weight excess weight and modest dimension assess to hub motor
2) Large efficiency gain from flux weakening
three) Large performance throughout climbing, 428H Chain and Sprocket Package for Motorbike Transmission and greater acceleration
4) Support regenerative braking


Take a look at Report

Conversion Kits


What is a sprocket?

A backlash sprocket is a sprocket with multiple teeth. The teeth are arranged at different intervals on the outer circumference of the sprocket. The bottoms of the tooth gaps are arcuate and connect opposing faces of adjacent teeth.
The backlash diameter on the backlash sprocket is larger than the diameter of the ISO tooth profile. This allows the rollers to engage the front surfaces of the teeth without causing the teeth to disengage. The result is reduced shock and noise.
as the picture shows. as the picture shows. As shown in FIG. 2, the sprocket 11 has a front surface (11a) and a rear surface (12b). The teeth are connected by a line extending from the center of rotation O of the sprocket to the center of the tooth gap bottom (13). The tooth surface on the sprocket is a convex arc of equal radius. The radius of re12a and re12b is larger than re8 of ISO tooth profile.
In addition to the tooth pitch of the sprockets, ISO sprockets have standard chains. This chain is defined as ISO 606 1994 (E). The sprocket pitch line is pc. The height of the tooth head (ha) is measured from the tooth pitch polygon.
Typically, the sprocket is secured to the shaft using one or more set screws. This means that it must be able to accommodate the keyway. To determine how much space is left, the outside diameter of the sprocket must be at least 10% larger than the pitch diameter of the shaft.
The gap tooth sprocket system provides extra precision for chain alignment. Its teeth are higher than ISO teeth.

ISO sprocket uniformity

ISO sprocket standard 606 specifies sprocket compliance for most of Europe. This standard specifies large spacings, measured in sixteenths of an inch, and expressed in metric units. It was developed before the American chain and was limited by the materials available. To ensure consistency, the ISO outer plate uses a chain size one step larger than the chain size required for the application. This results in a heavier chain. ISO sprockets are available in single, double and triple chain versions.
ANSI and ISO sprockets are interchangeable. They are based on mathematical themes and have a clear design. ISO sprockets are usually smaller than ANSI sprockets. They are also denoted with the suffix “B” to denote their chain number.

metal sprocket

Sintered metal sprocket is a metal sprocket with high mechanical properties. The tensile strength of the sprocket can reach more than 700 MPa, and the Charpy impact strength is 20 J/cm2. It’s also durable and wear-resistant.
This sprocket is used for high load applications. Its teeth are made of metal and flame-hardened. The edges of the teeth are slightly softer than the rest of the teeth. The edges of the sprockets wear out when bitten.
The sprocket is a toothed profiled wheel. It is different from a pulley that meshes with a belt. On the other hand, timing pulleys are used with toothed belts. Sprockets and chain mechanisms were also used in early cars.
Another common use for metal sprockets is in movie projectors, where they punch holes in the film. They are also used as the paper feed mechanism in some computer printers. There are several types of sprockets. Some sprockets are lightweight, while others are heavy and have flanges to keep the timing belt centered.

plastic sprocket

Plastic sprockets are ideal for a variety of applications. They reduce noise and reduce chain wear. Their compressibility also increases their overall load capacity. Some of their uses include dust-free environments, food applications and quieter chain drives. They can also be customized to your specifications.
One embodiment of the present invention includes a plastic sprocket having a co-injected outer shell and an inner core of a second material. This allows the sprocket to combine the advantages of both materials. This makes the sprocket easier to clean and lighter in weight.
There are many different materials available for plastic sprockets. One of the most popular is Duro-Glide(r) UHMW-PE. However, there are other materials that are better suited for certain applications. For example, polyurethane sprockets have excellent wear resistance, but may be too flexible to drive a belt. Therefore, it is important to find the right combination of materials to get the job done.
If you are in the market for a plastic sprocket, contact a reputable manufacturer. These companies offer a wide range of standard and custom sizes to meet any of your needs. They can also offer czpt delivery for quick turnaround. They specialize in custom manuManufactured and certified to ISO 9001:2000.
Imao offers sprockets in a variety of different materials. They are available in a variety of sizes and feature either molded ball bearings or fiberglass reinforced bearings. These sprockets are designed for sawmills and other light duty applications. They are also resilient and can be used in any type of sawmill.

Aluminum sprocket

Aluminum sprockets save weight and increase the speed of the bike. The material used to make them is 7075-T6 aerospace grade aluminum, which makes them lightweight and durable. The teeth are also formed on the hobbing machine so they fit perfectly and reduce friction. They also have an anodized color finish for added strength and durability.
The size you need depends on your wheel setup and the type of terrain you ride. Larger sprockets are better for slower terrain and provide more torque. However, larger sprockets tend to reduce top speed, so you may need to adjust accordingly. If you have an OEM 19″ or 16″ setup, 52t/54t sprockets are the most recommended option. 7075-T6 aluminum also reduces weight and rolling mass.
China QS138 4000W 90H 7500W Max continuous 72V 100KPH Mid drive Motor For Off road Bike and ATV     hp sprocketChina QS138 4000W 90H 7500W Max continuous 72V 100KPH Mid drive Motor For Off road Bike and ATV     hp sprocket
editor by czh 2023-02-16

China Brazil Market Motor Bike Cg125 Fan 2014 Sprockets with ce certificate top quality Good price

Item Description

HangZhou CZPT CZPT CZPT nology Co., Ltd is located in the lovely coastal city-HangZhou.We are a large organization teams engaged in investigating, manufacturing, advertising and marketing and technological solutions, possessing three large analysis and manufacturing bases and a single massive advertising and marketing middle for transmission areas, chains, sprockets. Covering eighty,000 sq. meters, now we have 816 employees including 167 senior professional specialists and a global community of revenue and service method.Retaining very good partnership with HangZhou University, HangZhou University, ZheJiang Agricultural University, ZheJiang University and Chinese Academy of Agricultural CZPT s, we are acquiring fantastic technological support from sector specialists.
“You provide a request, We are going to give you a perfect product”.We uphold the organization philosophy “integrity, efficiency, collaboration, innovation”, quality initial, CZPT d engineering, precision manufacturing, integrity management, efficient provider, to support CZPT CZPT ers with the best high quality goods and super innovative engineering.
SMCC are make a comprehensive selection of sprockets are CZPT ex-stock for chain No.578, 503, 603, 604, SS-one hundred ten etc.Tooth profiles are solid or device reduce.Conveyor and elevator sprockets with/with out flame hardened teeth are also manufactured as for every drawing.

Basic INFO 

1. Tooth profile of bike sprocket

The tooth profile of the sprocket must make sure that the chain enters and leaves the mesh smoothly and energy-savingly, minimizes the impact and make contact with anxiety of the chain links for the duration of the meshing procedure, and is easy to procedure.
The generally utilised motorcycle sprocket tooth profile is a 3-arc straight tooth profile.

two. CZPT structure
Modest-diameter sprockets are generally integral, even though medium-diameter sprockets are mainly spokes. In buy to facilitate dealing with, set up and bodyweight reduction, holes are manufactured in the spoke plate. Big-diameter sprocket can be created into a merged kind. The wheel core can be made of various components! For example: C45, stainless steel and other components.

three. CZPT material

The sprocket material ought to make certain that the equipment enamel have ample power and wear resistance, so the area of the sprocket tooth usually gets to be difficult.


1. Assembly demands for motorbike sprockets. The tightness of the chain ought to be suitable. Also restricted will boost CZPT intake, and the bearing will wear the sprocket is as well unfastened, it is straightforward to jump off the chain. The tightness of the chain is: lifting or urgent down from the middle of the chain, it is about 2%-3% of the heart length amongst the two sprockets.

two. When the bike sprocket is installed on the shaft, it need to not swing or deflect. In the very same gearbox assembly, the conclude faces of the two sprockets must be on the same airplane. When the centre length of the sprocket is much less than .5 meters, the deviation can be 1 mm when the center distance of the sprocket is increased than .5 meters, the deviation can be 2 mm. Nonetheless, there must be no friction on the sides of the sprocket enamel. If the deviation of the two wheels is also large, it is effortless to cause the chain to split and speed up put on. When replacing the sprocket, you should pay out attention to examine and alter the offset.

3. Soon after the bike sprocket is seriously worn, the new sprocket and the new chain need to be replaced at the identical time to make certain great meshing. CZPT s or chains cannot be changed independently. CZPT wise, it will cause very poor meshing and speed up the put on of new sprocket or new chain. When the tooth area of the sprocket wears to a particular diploma, it should be turned more than and utilised in time (referring to the sprocket with adjustable surface) to lengthen the use time.

4. The chain of a new bike is as well CZPT or tightened right after use, making it difficult to alter. You can CZPT te the chain website link according to the circumstance, but it should be an even number. The chain link need to pass by way of the rear of the sprocket, the lock plate must be inserted into the outside, and the opening of the lock plate must encounter the opposite route of rotation.

5. During operate, motorbike chains should be stuffed with lubricating oil in time. CZPT have to enter the matching gap between the roller and the interior sleeve to boost functioning circumstances and minimize dress in.

6. The old sprocket of the motorcycle can’t be blended with the new sprocket, normally it is simple to generate impact in the transmission and harm the sprocket.

7. When storing the bike for a CZPT time, make sure you remove the sprocket and clear it with kerosene or diesel, then implement engine oil or butter, and then store it in a dry spot.

eight.The motorbike chains work in unclean environments, and as a result the wearing surfaces (that is, the pins and bushings) are safe from precipitation and airborne grit, numerous even in a sealed atmosphere this sort of as an oil bathtub, and for dimensions or operational factors are not able to be sealed. CZPT cycle chains will essentially have relatively large costs of use, particularly when the operators are well prepared to take more friction, significantly less effectiveness, more sounds and a lot more recurrent alternative as they neglect lubrication and adjustment.

Many oil-based lubricants draw in dust and other particles, at some point forming an abrasive paste that will compound wear on chains. This difficulty can be circumvented by use of a “dry” PTFE spray, which forms a sound film following application and repels equally particles and humidity.


one. Ahead of packing the motorbike sprocket, required anti-rust steps should be taken, this sort of as: oiling, blackening, galvanizing, chrome plating, nickel plating, waxing, and so forth.

2. To prevent the surface of the bike sprocket from being bumped and scratched, the inner packaging adopts foam bag packaging.

three. The outer packaging of motorbike sprocket is normally CZPT ized packaging for CZPT ers. For instance: coloration box packaging, shade plastic bag packaging and CZPT er logos on bike sprocket chain sleeves…


1. CZPT ble High quality Assurance Program

two. Slicing-Edge Laptop-Managed CNC CZPT s

3. Bespoke Solutions from CZPT ly Knowledgeable Specialists

4. CZPT ization and CZPT Obtainable for Particular Application

five. In depth Stock of CZPT Parts and Equipment

six. Well-Created Worldwide Advertising Community

7. Efficient Right after-Sale Service Technique
The 219 sets of CZPT d automatic generation tools offer assures for higher merchandise good quality. The 167 engineers and experts with senior specialist titles can design and build merchandise to meet the precise demands of CZPT ers, and CZPT CZPT izations are also CZPT with us. Our seem worldwide provider community can supply CZPT ers with timely after-sales complex solutions.

We are not just a producer and supplier, but also an sector consultant. We function professional-actively with you to offer specialist advice and item suggestions in order to conclude up with a most price efficient merchandise CZPT for your specific application. The clients we serve CZPT assortment from end customers to distributors and CZPT s. Our CZPT replacements can be substituted anywhere required and appropriate for both repair and new assemblies.



Steel Split Sprockets: These sprockets are split in 50 % for simpler set up into the chain technique with out getting rid of the axle. The operator can place every single 50 % into the chain just before bolting the halves jointly. This only makes it possible for the sprocket to be replaced without having dismantling the whole assembly and retains the operator from getting to loosen or reposition the chain.
China Brazil Market Motor Bike Cg125 Fan 2014 Sprockets with ce certificate top quality Good price