China factory 1240 Series Cast Engineer Cass Conveyor Sprocket sprocket chart

Product Description

Product Description

1240 series engineer class sprocket is used for a wide verity of chain sizes. These sizes include 1240, ROA1242, 1244, R1248, ROA124, SS124, IS-4110, IS-4106, LXS1242 and 1241 size chains. These sprockets are typically supplied as cast material but we can also supply them as steel for longer operation. The below chart shows the standard tooth counts as well as dimensions for each size.

Product Parameters

Cast 1240-Series Sprockets


Tooth Face at Pitch Line: 1.750″ – Roller Diameter: 1.750″

Sprocket Size Tooth Count Pitch Diameter Style Hub Diameter Length Thru Bore Maximum Bore Weight (LBS)
1240C6 6 8.13″ C 4.00″ 4.00″ 2.31″ 30.0 LBS
1240C7 7 13.83″ C 5.25″ 4.75″ 3.25″ 39.0 LBS
1240C8 8 10.82″ C 6.50″ 5.00″ 4.06″ 52.0 LBS
1240C9 9 11.88″ C 6.50″ 5.00″ 4.06″ 61.0 LBS
1240C10 10 13.15″ C 6.50″ 5.00″ 4.06″ 69.0 LBS
1240C11 11 14.42″ C 6.50″ 5.00″ 4.06″ 78.0 LBS
1240C12 12 15.70″ C 7.00″ 6.00″ 4.56″ 96.0 LBS
1240C13 13 16.98″ C 7.00″ 6.00″ 4.56″ 102.0 LBS
1240C14 14 18.26″ C 7.00″ 6.00″ 4.56″ 112.0 LBS
1240C15 15 19.54″ C 7.00″ 6.00″ 4.56″ 122.0 LBS
1240C16 16 20.82″ C 8.00″ 6.25″ 5.31″ 140.0 LBS
1240C17 17 22.11″ C 8.00″ 6.25″ 5.31″ 142.0 LBS
1240C18 18 23.40″ C 8.00″ 6.25″ 5.31″ 161.0 LBS
1240C19 19 24.68″ C 8.00″ 6.25″ 5.31″ 175.0 LBS
1240C21 21 27.26″ C 8.00″ 6.25″ 5.31″ 210.0 LBS
1240C22 22 28.55″ C 8.00″ 6.25″ 5.31″ 218.0 LBS
1240C28 28 36.29″ C 9.00″ 6.25″ 6.06″ 310.0 LBS
1240C29 29 37.58″ C 9.00″ 6.75″ 6.06″ 330.0 LBS
1240C30 30 38.87″ C 10.00″ 6.75″ 7.13″ 346.0 LBS
1240C32 32 41.45″ C 10.00″ 6.75″ 7.13″ 378.0 LBS
1240C34 34 44.03″ C 10.00″ 6.75″ 7.13″ 402.0 LBS

Company Profile


Services we can provide

1. Produce strictly following standard dimension
2. Material: 1045 Steel / Alloy Steel / Stainless Steel 304 & 316 
3. Standard: ANSI, DIN, JINS, ISO, KANA, Standard America, or customer’s drawing
4. Pilot bore, finished bore, taper bore, and special bore. 
5. Bright surface / high precision / Blacking /Electrophoretic-Coated
6. Advanced heat treatment and surface treatment craft
7. Best quality and competitive price. 
8. Welcome OEM / ODM 
9. Processing Equipment: Hobbing machine, Slotting machine, CNC lathes, and other equipment.
10. Sprocket Models: Contains special sprocket according to customer’s drawings, standard sprocket (American standard and metric).

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:

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.


Standard Or Nonstandard: Standard
Application: Motor, Motorcycle, Machinery, Agricultural Machinery, Car
Hardness: Hardened Tooth Surface
Manufacturing Method: Rolling Gear
Toothed Portion Shape: Spur Gear
Material: Stainless Steel
US$ 9999/Piece
1 Piece(Min.Order)

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How to choose a sprocket in CZPT

Sprocket is one of CZPT mechanical villagers. It can be found at levels 50, 55, 60 and 65. Like other mechanical villagers, it has a metallic texture and occasionally makes mechanical sounds when moving. It prefers green/orange and active/simple style colors.

Pitch sprocket

When choosing a pitch sprocket, you need to consider several factors, including the pitch diameter. This affects the torque applied to the shaft and the length of the moment arm. Additionally, incorrect pitch can affect belt life and wear. The pitch diameter should be measured by wrapping the belt around the sprocket at a 180-degree angle to the rod head. You can also consult engineering guidelines and product sheets to determine proper spacing.
The pitch diameter of a sprocket is the distance from the center of the pin to the next pin in the chain. The pitch diameter also determines the size of the sprocket teeth. The larger the pitch, the larger the teeth on the sprocket.
The diameter of the pitch sprocket depends on the type of bike. If you have an older bike, you should choose a sprocket with a diameter closer to the hub. If your bike has a smaller diameter rim, you can choose a sprocket with a smaller diameter and larger caliper. In addition to the caliper diameter, you should also consider the hub diameter.
Proper pitch sprockets can last longer. They are made with hardened teeth to increase their longevity and durability. You can choose between single-purpose and dual-purpose sprockets. Single-tooth sprockets have one tooth per pitch, while double-tooth sprockets have two teeth per pitch.
A pitch sprocket is a component of a bicycle chain. It prevents the chain from shaking due to uneven load distribution. Plus, it helps the chain stay tight.

three sprockets

Triple sprockets are toothed or cogwheels that move the chain. The pitch circle diameter of the triple sprocket is two and a half inches. Most rear sprockets are made of aluminum. The quality of the aluminum sheet used to make the sprocket varies from manufacturer to manufacturer. However, CZPT only uses the best aluminium sheets on the market. The sprockets are then shaped on a hobbing machine to ensure a perfect fit with the chain. The final anodizing process improves durability and adds personalization. The manufacturing process of CZPT is a quality control process with an uncompromising commitment to perfection.

Cone lock sprocket

Taper lock sprockets are one of several types of sprockets. It has openings in flanges and tapers, making it ideal for a variety of applications. These sprockets also have the advantage of being easy to install and remove. These sprockets are also available in pre-drilled models that are pre-drilled to fit the shaft diameter. This allows for easier installation and improved alignment. Also, you can replace the sprockets without replacing the entire gear train.
These sprockets have flame hardened teeth for extended chain and sprocket life. They also help reduce drive noise. They are available in a variety of sizes, including duplex and triplex. In addition to being made of high-quality steel, they are also available in cast iron and metric models.

Quick release sprocket

There are several different styles of quick disconnect sprockets. Typically, they come with a 2″ hole and are compatible with various welds on the hub. The Quick Disconnect (QD) style is a special style with a split design on the hub and use of torque bolts to make it easier to install. This type of sprocket is very popular in the power transmission industry.

Irregular sprocket

Idler gears are small gears that run on the chain. This sprocket can be used for a variety of purposes and is available in a variety of configurations. Its most common configuration is a ball bearing, pre-lubricated and sealed against moisture. Other idler sprockets have needle bearings, which are more stable and can handle higher capacities. Bronze bearings are another option as they have no moving parts.
China factory 1240 Series Cast Engineer Cass Conveyor Sprocket     sprocket chartChina factory 1240 Series Cast Engineer Cass Conveyor Sprocket     sprocket chart
editor by CX 2023-05-19

Conveyor Sprocket

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