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China 11T T8F Gear Box Sprocket for Mini Pocket Bike for 47cc 49cc Pocket Dirt Bike Mini ATV Go Kart Scooter sprocket chart

Design Amount: forty-5 gear box clutch drum
Warranty: 50 percent 12 months
Product Title: Gearbox
Suit for: pocket bike
Material: Aluminum Alloy
clutch enamel: 11T
chain website link: T8F 136Link
sprocket enamel: 54T
sprocket diameter: 142mm
samples: paid sample
Support: Professional
Delivery Time: 7-sixty Days
Packaging Information: Cartons
Port: HangZhou/ZheJiang /HangZhou


Place of OriginChina
Brand NameCP moto
Model Amount40-5 equipment box clutch drum
Warrantyhalf yr
Product TitleGearbox
Fit forpocket bike
MaterialAluminum Alloy
clutch tooth11T
chain website linkT8F 136Link
sprocket teeth54T
sprocket diameter142mm
samplespaid sample
Delivery Time7-60 Times
Packing & Supply We employed Courier services for small merchandise, The Heavy item by sea or prepare . Make sure you let 7-35 functioning days to procedure your purchase and ship the merchandise. If an merchandise is out of stock, we will contact you as soon as possibly.We will e mail the tracking specifics when your get is dispatched. Business Profile HangZhou CP Import and Export Co., Ltd.,is specialised in exporting dirt bicycle, pitbike, scooter, pocket bicycle and ATV spare components. We have 16 many years of exporting expertise in overseas trade, Factory Value Single-flange grid coupling JSD5 torque transmission Higher Overall performance snake spring shaft connector hot sale and we have offered a great deal of large-top quality dust bike & scooter accessories to consumers all around the planet. We have exported to above 60 nations around the world, and some of the outdated consumers have been functioning together with us for far more than 9 many years, and we seem CZPT to working with friends all about the globe. We imagine that our large-quality goods, aggressive charges could satisfy your needs. Welcome to give us your suggestion to boost our goods, support and administration, and you are going to be handled with the highest respect.Speak to Info:mobile phone//:1315711051 FAQ one. Q: How do you make sure consumer can get the correct item? A: We takes photos for each item you order and enable you verify images just before supply.2. Q: How about payments?A: We acknowledge T/T,Western Union and Paypal.three. Q: What is the lead time of the regular order?A: About 7-35 days4. Q: Could you make tailored merchandise and deal box with our business logo?A: Yes, SWC-WH sort cardan shaft with flange sleeve some items and package deal can be custom-made when the purchase amount is huge.5. Q: What is your least get ?A: Air purchase: USD100 Sea order: USD3000.6. Q: How can I get some samples? A: Some of the products’ samples are offered. Samples and postage will be on the purchaser. Our Benefits We have a wonderful staff who like partaking in off-street bikes. We have an unbiased factory, skilled engineers, outstanding sales personnel. Each of us to handle every customer with adore. Our customer’s gratification is our aim, and we care about our customer’s good results. We will keep on accumulating expertise and bettering manufacturing technological innovation to give new merchandise continually. We believe that all of these aspects will allow our customers get marketplace. We will strive to be the ideal grime bike & scooter components suppliers. Our success requirements your support. Why Decide on Us


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 11T T8F Gear Box Sprocket for Mini Pocket Bike for 47cc 49cc Pocket Dirt Bike Mini ATV Go Kart Scooter     sprocket chartChina 11T T8F Gear Box Sprocket for Mini Pocket Bike for 47cc 49cc Pocket Dirt Bike Mini ATV Go Kart Scooter     sprocket chart
editor by Cx 2023-06-21

China Hot selling Gear Box Roller Chains and Conveyor Chain and Driving Chains 08A 13teeth Series Sprocket with Hot selling

Item Description

SPROCKET  1/2” X 5/16”  08B Sequence SPROCKETS

For Chain Acc.to DIN8187 ISO/R 606
Tooth Radius  r3 thirteen.0mm
Radius Width C 1.3mm
Tooth Width b1 seven.0mm
Tooth Width B1 7.2mm
Tooth Width B2 21.0mm
Tooth Width B3 34.9mm
08B Collection ROLLER CHAINS  
Pitch twelve.7 mm
Internal Width 7.seventy five mm
Roller Diameter 8.fifty one mm



D1 D2 D3
eight 37.2  33.18  8 10 10
9 forty one.0  37.13  8 10 10
10 45.2  41.10  8 ten 10
11 48.7  forty five.07  ten ten 12
12 fifty three.0  forty nine.07  ten 10 12
13 fifty seven.4  53.06  ten ten twelve
fourteen sixty one.8  57.07  ten ten 12
15 sixty five.5  sixty one.09  ten ten 12
sixteen 69.5  65.10  ten twelve sixteen
17 seventy three.6  69.11  10 12 sixteen
18 seventy seven.8  seventy three.14  ten twelve 16
19 eighty one.7  seventy seven.16  ten 12 16
twenty 85.8  eighty one.19  10 12 sixteen
21 89.7  85.22  twelve 16 16
22 ninety three.8  89.24  12 16 16
23 98.2  93.27  twelve 16 16
24 101.8  97.29  twelve 16 16
twenty five a hundred and five.8  one zero one.33  12 sixteen 16
26 110.0  one zero five.36  sixteen 16 sixteen
27 114.0  109.40  sixteen 16 sixteen
28 118.0  113.42  sixteen sixteen 16
29 122.0  117.46  sixteen 16 sixteen
thirty 126.1  121.50  sixteen 16 16
31 a hundred thirty.2  one hundred twenty five.54  sixteen 16 twenty
32 134.3  129.56  sixteen sixteen 20
33 138.4  133.60  16 16 twenty
34 142.6  137.64  16 sixteen twenty
35 146.7  141.68  16 sixteen 20
36 151.0  145.72  16 twenty twenty
37 154.6  149.76  sixteen twenty twenty
38 158.6  153.80  sixteen 20 20
39 162.7  157.83  16 20 20
forty 166.8  161.87  sixteen 20 20
41 171.4  one hundred sixty five.91  twenty 20 25
forty two 175.4  169.94  20 twenty 25
43 179.7  173.98  20 20 25
44 183.8  178.02  twenty twenty twenty five
45 188.0  182.07  twenty 20 25
forty six 192.1  186.10  twenty 20 twenty five
forty seven 196.2  a hundred ninety.14  20 20 25
48 two hundred.3  194.18  20 twenty twenty five
49 204.3  198.22  twenty twenty twenty five
fifty 208.3  202.26  twenty twenty twenty five
fifty one 212.1  206.30  twenty 25 25
fifty two 216.1  210.34  twenty 25 twenty five
53 220.2  214.37  20 25 twenty five
54 224.1  218.43  twenty 25 twenty five
55 228.1  222.46  20 twenty five twenty five
56 232.2  226.50  twenty 25 twenty five
57 236.4  230.54  twenty 25 25
58 240.5  234.58  twenty twenty five twenty five
fifty nine 244.5  238.62  twenty twenty five 25
sixty 248.6  242.66  20 25 twenty five
62 256.9  250.74  25 25 twenty five
64 265.1  258.82  twenty five 25 25
65 269.0  262.86  25 twenty five twenty five
sixty six 273.0  266.91  twenty five twenty five 25
sixty eight 281.0  274.99  25 25 twenty five
70 289.0  283.07  25 25 twenty five
seventy two 297.2  291.15  twenty five 25 twenty five
seventy five 309.2  303.28  25 twenty five 25
76 313.2  307.32  25 25 twenty five
78 321.4  315.40  25 twenty five twenty five
eighty 329.4  323.49  twenty five 25 twenty five
eighty five 349.0  343.69  twenty five twenty five 25
ninety 369.9  363.90  twenty five 25 25
95 390.1  384.11  25 twenty five 25
a hundred 410.3  404.32  25 25 twenty five
110 450.7  444.74  25 25 twenty five
114 466.9  460.91  twenty five 25 twenty five
120 491.2  485.16  25 twenty five 25
one hundred twenty five 511.3  505.37  25 25 25

Fundamental Info.


Simplex, Duplex, Triplex

Sprocket Model:

three/8″,1/2″,5/8″,3/4″,1″,1.twenty five”,1.fifty”,1.75″,2.00″,2.25″,2.00″,2.25″,2.50″, 3″

Teeth Number:





1571, 1045, SS304 , SS316  As For each Person Ask for.

Performance Treatment method:

Carburizing, Large Frequency Treatment method, Hardening and Tempering, Nitriding

Floor Remedy:

Black of Oxidation, Zincing, Nickelage.

Characteristic Fire Resistant, Oil Resistant, Heat Resistant, CZPT resistance, Oxidative resistance, Corrosion resistance, and so on
Layout criterion ISO DIN ANSI & Buyer Drawings
Application Industrial transmission gear
Package deal Wood Case / Container and pallet, or produced-to-order



Top quality Inspection:

Self-check and Final-check


ODM&OEM, Demo Get Offered and Welcome

Gain Top quality first, Support 1st, Aggressive price, Fast shipping
Shipping and delivery Time ten days for samples. 15 days for official order.


Installation AND Utilizing

The chain spocket, as a generate or deflection for chains, has pockets to keep the chain back links with a D-profile CZPT area with flat facet surfaces  parallel to the centre plane of the chain back links, and outer surfaces at correct angles to the chain hyperlink centre aircraft. The chain backlinks are pressed firmly in opposition to the outer surfaces and every single of the aspect surfaces by the angled laying surfaces at the base of the pockets, and also the assistance surfaces of the wheel human body jointly with the conclude sides of the webs fashioned by the foremost and trailing partitions of the pocket.


When CZPT new chainwheels it is really essential that a new chain is equipped at the very same time, and vice versa. Employing an outdated chain with new sprockets, or a new chain with previous sprockets will result in speedy use.

It is essential if you are setting up the chainwheels your self to have the manufacturing unit services manual particular to your model. Our chainwheels are created to be a immediate CZPT for your OEM chainwheels and as these kinds of, the installation should be done in accordance to your models provider handbook.

Throughout use a chain will stretch (i.e. the pins will use leading to extension of the chain). Making use of a chain which has been stretched more than the previously mentioned maximum allowance leads to the chain to experience up the teeth of the sprocket. This triggers harm to the guidelines of the chainwheels enamel, as the force transmitted by the chain is transmitted entirely through the top of the tooth, fairly than the total tooth. This final results in extreme putting on of the chainwheel.


Requirements corporations (this sort of as ANSI and ISO) maintain requirements for design, proportions, and interchangeability of transmission chains. For example, the adhering to Table shows data from ANSI regular B29.1-2011 (Precision Electricity Transmission Roller Chains, Attachments, and Sprockets) produced by the American Modern society of Mechanical Engineers (ASME). See the references[8][9][10] for extra info.

ASME/ANSI B29.1-2011 Roller Chain Standard SizesSizePitchMaximum Roller DiameterMinimum Final Tensile StrengthMeasuring Load25

ASME/ANSI B29.1-2011 Roller Chain Normal Measurements
Dimensions Pitch Optimum Roller Diameter Minimal Final Tensile Strength Measuring Load
25 .250 in (6.35 mm) .a hundred thirty in (3.30 mm) 780 lb (350 kg) eighteen lb (8.2 kg)
35 .375 in (9.fifty three mm) .two hundred in (5.08 mm) 1,760 lb (800 kg) eighteen lb (8.2 kg)
41 .five hundred in (12.70 mm) .306 in (7.77 mm) one,500 lb (680 kg) eighteen lb (8.2 kg)
forty .500 in (twelve.70 mm) .312 in (7.92 mm) 3,one hundred twenty five lb (1,417 kg) 31 lb (14 kg)
50 .625 in (fifteen.88 mm) .400 in (ten.sixteen mm) four,880 lb (2,210 kg) forty nine lb (22 kg)
60 .750 in (19.05 mm) .469 in (11.ninety one mm) 7,030 lb (3,one hundred ninety kg) 70 lb (32 kg)
80 one.000 in (25.forty mm) .625 in (fifteen.88 mm) 12,500 lb (5,seven-hundred kg) 125 lb (fifty seven kg)
one hundred 1.250 in (31.seventy five mm) .750 in (19.05 mm) 19,531 lb (8,859 kg) 195 lb (88 kg)
one hundred twenty 1.500 in (38.ten mm) .875 in (22.23 mm) 28,a hundred twenty five lb (12,757 kg) 281 lb (127 kg)
a hundred and forty 1.750 in (forty four.forty five mm) 1.000 in (twenty five.forty mm) 38,280 lb (seventeen,360 kg) 383 lb (174 kg)
one hundred sixty 2.000 in (fifty.80 mm) one.one hundred twenty five in (28.58 mm) fifty,000 lb (23,000 kg) 500 lb (230 kg)
one hundred eighty two.250 in (fifty seven.15 mm) one.460 in (37.08 mm) sixty three,280 lb (28,seven hundred kg) 633 lb (287 kg)
200 two.five hundred in (63.fifty mm) 1.562 in (39.sixty seven mm) 78,175 lb (35,460 kg) 781 lb (354 kg)
240 3.000 in (seventy six.20 mm) one.875 in (forty seven.sixty three mm) 112,500 lb (fifty one,000 kg) one,000 lb (450 kg

For mnemonic functions, under is another presentation of key dimensions from the very same regular, expressed in fractions of an inch (which was portion of the contemplating guiding the decision of favored numbers in the ANSI normal):

Pitch (inches) Pitch expressed
in eighths
ANSI common
chain variety
Width (inches)
14 twoeight 2five one8
threeeight 3eight threefive 3sixteen
12 four8 fourone 14
onetwo 4eight four 516
five8 fiveeight 5 3eight
34 six8 6 12
1 88 8 58

one. The pitch is the length among roller facilities. The width is the length between the url plates (i.e. marginally more than the roller width to enable for clearance).
2. The right-hand digit of the normal denotes 0 = normal chain, 1 = light-weight chain, 5 = rollerless bushing chain.
3. The left-hand digit denotes the quantity of eighths of an inch that make up the pitch.
4. An “H” pursuing the common amount denotes heavyweight chain. A hyphenated variety adhering to the standard amount denotes double-strand (2), triple-strand (3), and so on. Therefore 60H-3 denotes number 60 heavyweight triple-strand chain.
 A typical bicycle chain (for derailleur gears) employs slim 1⁄2-inch-pitch chain. The width of the chain is variable, and does not affect the load capacity. The more sprockets at the rear wheel (traditionally 3-6, today 7-twelve sprockets), the narrower the chain. Chains are sold in accordance to the amount of speeds they are created to work with, for example, “ten velocity chain”. Hub gear or solitary pace bicycles use 1/2″ x 1/8″ chains, where 1/8″ refers to the maximum thickness of a sprocket that can be utilised with the chain.

Generally chains with parallel shaped links have an even quantity of back links, with every single slim link adopted by a broad 1.Chains constructed up with a uniform kind of hyperlink, narrow at 1 and broad at the other end, can be produced with an odd number of links, which can be an benefit to adapt to a special chainwheel-distance on the other facet this sort of a chain tends to be not so strong.

Roller chains produced utilizing ISO common are sometimes called as isochains.


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one. Reputable Good quality Assurance Method
2. Chopping-Edge Laptop-Controlled CNC Equipment
three. Bespoke Solutions from Very Seasoned Professionals
4. Customization and OEM Offered for Certain Software
five. Comprehensive Inventory of Spare Components and Components
six. Properly-Produced Throughout the world Marketing Community
7. Successful Soon after-Sale Support Method


The 219 sets of superior automatic generation tools supply assures for high merchandise top quality. The 167 engineers and professionals with senior expert titles can layout and build products to fulfill the exact calls for of buyers, and OEM customizations are also available with us. Our audio international provider community can offer consumers with well timed following-income complex services.

We are not just a producer and provider, but also an sector advisor. We function pro-actively with you to offer you skilled guidance and merchandise recommendations in order to stop up with a most value effective merchandise accessible for your particular software. The clients we serve worldwide range from conclude customers to distributors and OEMs. Our OEM replacements can be substituted anywhere required and suited for each mend and new assemblies.


Steel Split Sprockets: These sprockets are split in 50 % for less complicated installation into the chain technique without having taking away the axle. The operator can spot every 50 % into the chain ahead of bolting the halves with each other. This only makes it possible for the sprocket to be changed without having dismantling the total assembly and retains the operator from possessing to loosen or reposition the chain.
Ep prefabricated steel sprockets are manufactured of C1045 steel, induction hardened or warmth-handled steel, 400 – five hundred BHN hardness. Make sure you specify the components you want. Unless otherwise requested, the outside diameter of the hub must be ample to accommodate the required holes and keyways. Keys to these items are not provided unless asked for or installed on the shaft. Split sprockets for welding or split sprockets for bolts offer an inexpensive way to put in sprockets on shafts the place removing of the shaft assembly is prohibited. A lot of measurements of sprockets are geared up with holes, keyways, and established screws. Discs or partly completed sprockets are also stocked. For extended sprockets and idlers, specify the chain dimensions employed.

China Hot selling Gear Box Roller Chains and Conveyor Chain and Driving Chains 08A 13teeth Series Sprocket     with Hot selling