
Chain No. |
Pitch |
Roller diameter |
Width between inner plates |
Pin diameter |
Pin length |
Attachment dimension |
Tensile strength |
Weight per meter |
P |
d1 max |
d8 max |
b1 min |
d2 max |
L1 max |
L2 max |
L3 max |
L4 max |
C |
d3 |
Q min |
q |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
kN/lbf |
kg/m |
C2040-1LTR |
25.40 |
7.95 |
15.88 |
7.85 |
3.96 |
13.50 |
16.6 |
17.8 |
18.8 |
12.7 |
3.96 |
14.1/3205 |
1.31 |
C2040-1LTRF2 |
25.40 |
7.95 |
15.88 |
7.85 |
3.96 |
13.50 |
16.6 |
17.8 |
18.8 |
15.0 |
3.96 |
14.1/3205 |
1.24 |
C2040-1LTRF3 |
25.40 |
7.95 |
15.88 |
7.85 |
3.96 |
13.50 |
16.6 |
17.8 |
18.8 |
15.0 |
3.96 |
10.0/2248 |
1.12 |
C2050-1LTR |
31.75 |
10.16 |
19.05 |
9.40 |
5.08 |
16.50 |
20.7 |
22.2 |
23.3 |
15.9 |
5.08 |
22.2/5045 |
2.03 |
C2050-1LTRF3 |
31.75 |
10.16 |
19.05 |
9.40 |
5.08 |
16.50 |
20.7 |
22.2 |
23.3 |
19.0 |
5.08 |
22.2/5045 |
1.91 |
C2060-1LTR |
38.10 |
11.91 |
22.23 |
12.57 |
5.94 |
20.70 |
25.9 |
27.5 |
27.5 |
23.0 |
5.94 |
31.8/7227 |
2.89 |
C2060-1LTRF6 |
38.10 |
11.91 |
22.23 |
15.57 |
5.94 |
21.00 |
25.9 |
27.7 |
28.3 |
23.0 |
5.94 |
31.8/7227 |
2.80 |
C2060H-1LTRF7 |
38.10 |
5.94 |
28.00 |
12.57 |
5.94 |
22.40 |
29.2 |
31.6 |
- |
18.3 |
5.94 |
31.16991 |
1.61 |
C2080-1LTR |
50.80 |
15.88 |
28.58 |
15.75 |
7.92 |
26.20 |
32.7 |
35.0 |
36.5 |
29.0 |
11.50 |
56.7/12886 |
4.54 |
C2080H-1LTR |
50.80 |
15.88 |
28.55 |
15.75 |
7.92 |
29.28 |
36.2 |
38.9 |
41.6 |
29.0 |
11.10 |
55.6/12499 |
5.50 |
C2100-1LTR |
63.50 |
19.05 |
39.67 |
18.90 |
9.53 |
32.30 |
40.4 |
44.7 |
44.7 |
35.4 |
14.50 |
88.5/20114 |
7.72 |
C2100-1LTRF2 |
63.50 |
19.05 |
39.67 |
18.90 |
9.53 |
32.30 |
40.4 |
44.7 |
44.7 |
31.8 |
9.53 |
88.5/20114 |
7.42 |
Double pitch conveyor chains with top rollers are a type of special conveyor chain that has unique structural features and performance advantages.
Structural design:
Top - roller installation: The chain plate of the double - pitch chain is extended upward, and freely rotating top - rollers are installed on it. When the chain is single - stranded, if not specified, the top - rollers are installed on the inner chain links for even - numbered chain links; when the chain is double - stranded, the top - rollers are installed on the outer chain links for even - numbered chain links.
Chain body components: It is composed of inner chain plates, outer chain plates, pins, bushings, etc. The pins need to extend to the outside of the chain plates to fix the top - rollers, so higher strength is required, and alloy steel such as 40Cr is often used and strengthened by heat treatment. The bushings of the chain body adopt special oil - containing sintered bushings, which can be used for a long time without refueling.
Working principle:
Power transmission: Double - pitch conveyor chains with top - rollers mainly transmit power, torque, and rotational speed through the cooperation of the chain and sprockets and other transmission components. The pitch of the double - pitch chain is twice that of the short - pitch precision roller chain for transmission, and the other interchangeable dimensions are the same. Its tensile strength and hinge support area are the same as those of the corresponding short - pitch precision roller chain.
Top - roller function: The top - rollers are in contact with the conveying track or the conveyed material. They can not only bear the weight of the material but also reduce the friction between the chain and the track, enabling the chain to move more smoothly on the track.

Qingdao Star Machine Technology Co., Ltd. is located in the beautiful coastal city-Qingdao. We are a large enterprise group engaged in researching, production, marketing and technical services, with three large research and production bases and one large marketing center specializing in transmission parts, bearings, chains, sprockets, tractor driving axles and hydraulic steering units. Covering an area of 80,000 square meters, we now have 816 employees, including 167 senior professional technicians, and a global network of sales and service systems. Maintaining good partnerships with Liaocheng University, Qingdao University, Shandong Agricultural University, Shandong University and the Chinese Academy of Agricultural Sciences, we receive strong technical support from industry experts.


1. Reliable Quality Assurance System
2. Cutting-Edge Computer-Controlled CNC Machines
3. Bespoke Solutions from Highly Experienced Specialists
4. Customization and OEM Available for Specific Application
5. Extensive Inventory of Spare Parts and Accessories
6. Well-Developed Worldwide Marketing Network
7. Efficient After-Sale Service System
The 219 sets of advanced automatic production equipment provide guarantees for high product quality. The 167 engineers and technicians with senior professional titles can design and develop products to meet the exact demands of customers, and OEM customizations are also available with us. Our sound global service network can provide customers with timely after-sales technical services.
We are not just a manufacturer and supplier, but also an industry consultant. We work pro-actively with you to offer expert advice and product recommendations in order to end up with a most cost effective product available for your specific application. The clients we serve worldwide range from end users to distributors and OEMs. Our OEM replacements can be substituted wherever necessary and suitable for both repair and new assemblies.
Q: Why choose us ?
A. We are a manufacture, we have manufactured valve for over 20 years.
B. Reliable Quality Assurance System;
C. Cutting-Edge Computer-Controlled CNC Machines;
D. Bespoke Solutions from Highly Experienced Specialists;
E. Customization and OEM Available for Specific Application;
F. Extensive Inventory of Spare Parts and Accessories;
G. Well-Developed Worldwide Marketing Network;
H. Efficient After-Sale Service System
Q. What is your payment term?
A: 30% TT deposit, 70% balance T/T before shipping.
Q:Can we print our logo on your products?
A: yes, we offer OEM/ODM service, we support the customized logo, size, package,etc.
Q: What is your main market?
A: North America, South America, Eastern Europe, Western Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia,
Q: Can I get samples from your factory?
A: Yes, Samples can be provided.