81X Lumber Chain Sprockets

81X Lumber Chain Sprockets
Most of our 81X chain sprockets are manufactured from steel, but we also have cast sprockets. For washdown applications, we also supply high-quality 303, 304, and 316-grade stainless steel 81X sprockets as well as plastic 81X sprockets.

Category: Tag:

81X   Chain Sprocket Dimensions
To check the dimensions on your 81X sprocket, select the tooth count under your configuration on the below chart.

Lumber Conveyor 81x sprocket dimensions

Plastic 81X sprockets and stainless steel 81X sprockets are also available on request.

Teeth Outside Diameter Pitch Circle Diameter Pilot Bore Width Over Teeth
6 143.40mm 132.60mm 25mm 23.80mm
8 185.00mm 172.23mm 25mm 23.80mm
9 210.00mm 193.80mm 25mm 23.80mm
10 230.00mm 214.50mm 25mm 23.80mm
11 250.00mm 235.20mm 25mm 23.80mm
12 271.00mm 256.00mm 25mm 23.80mm
13 291.00mm 276.90mm 25mm 23.80mm
14 314.00mm 297.80mm 25mm 23.80mm
15 336.00mm 318.70mm 25mm 23.80mm
16 357.00mm 339.60mm 25mm 23.80mm
17 380.00mm 360.66mm 25mm 23.80mm


81X Chain

If you need a chain to match your 81x chain wheel, you can contact us, and we can provide a one-stop service
81x chain – high strength chain – conveyor chain for heavy work. 81X sprockets work with chain sizes: 81X, 81XH, 81XHH, 81XHD, 81XXHD, 81XHS, 81X-RT, 81XHT
81X series chains are widely used in the wood and wood processing industries. TYC 81X series chains are designed and manufactured for the most demanding working conditions. 81X chain with accessories is available.

Most of our 81X chain sprockets are manufactured from steel, but we also have cast sprockets. For washdown applications, we also supply high-quality 303, 304, and 316-grade stainless steel 81X sprockets as well as plastic 81X sprockets.

How to select the proper sprocket

Different types of materials

The ease of use of chain wheel products is not only related to the specifications but also related to the product materials. Different materials have different lengths, and their wear resistance will be affected accordingly. The impact resistance during use is also a key factor affecting the quality of the product. The more common materials, mainly low carbon plastic steel and alloy steel, these materials can give play to the corresponding characteristics to provide users with different satisfaction.

If you want to choose the appropriate sprocket products, you must first select from the strength and wear resistance. If the running speed of the scenario we use is relatively low and the transmission is relatively uniform, we can meet the demand by selecting medium carbon steel materials with lower prices. If it runs faster during construction, it is necessary to consider medium carbon steel with a higher strength to meet the demand better.

Precautions for replacing old sprocket

Chain wheel products are critical components in many mechanical products, so their function cannot be underestimated. Take agricultural machinery equipment as an example. In case of chain wheel failure, it must be replaced in time. Otherwise, it is easy to cause increased fuel consumption and challenging to start. Of course, it is easy to damage the machine if the situation is serious. However, it is also difficult to replace this part. Here, the chain wheel manufacturer may as well introduce the basic chain wheel better skills:

  1. Select the same model
    The sprocket products of the same model must be selected during replacement, which is the minimum requirement. Otherwise, it is difficult to achieve good coordination with other components.
  2.  Enlarged parts are not universal.
    This point needs to be kept in mind because the installation wisdom of the chain wheel with a larger size increases the processing amount, which will not only waste time but also reduce the product's service life, which is naturally not a desirable choice.
  3. Directionality
    During the installation of the new sprocket, we must pay attention to the basic directivity requirements. We should know that many sprocket products have directivity. If we are negligent about this, it is easy to damage the parts.


Additional information



Product Quick Detail:

  • Standard and non-standard available
  • With high quality and competitive price
  • Prompt delivery
  • Packing as per customer’s demand.

We promise will offer the best price by the high quality in china! We also accept special order about the products. If you are interested in our products. Please do not hesitate to let us know.We are pleased to give you the detailed information.We promise that our products would be safety and were in high quality and reasonable price. If you are interested in our products, please contact us asap.We are sincerely looking for your cooperation.

Most of our products are exported to Europe or Americas, both standard and nonstandard products available. We can produce as per your drawing or sample. Material can be standard or as per your special request. If you choose us, you choose reliable.

pruduct quality report

Materials Available

1. Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS420
2. Steel:C45(K1045), C46(K1046),C20
3. Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200(CuZn37), C28000(CuZn40)
4. Bronze: C51000, C52100, C54400, etc
5. Iron: 1213, 12L14,1215
6. Aluminum: Al6061, Al6063
7.OEM according to your request
product materials available

Surface Treatment

Annealing, natural canonization, heat treatment, polishing, nickel plating, chrome plating, zinc plating,yellow passivization, gold passivization, satin, Black surface painted etc.

Processing Method

CNC machining, punch,turning, milling, drilling, grinding, broaching, welding and assembly
product finishing

QC & Certificate

Technicians self-check in production,final-check before package by professional Quality inspector
ISO9001:2008 , ISO14001:2001,ISO/TS 16949:2009

Package & Lead Time

Size: Drawings
Wooden Case/Container and pallet, or as per customized specifications.
15-25days samples. 30-45days offcial order
Port: Shanghai/Ningbo port
product packages