| Chain No. |
Pitch |
Roller diameter |
Width between inner plates |
Pin diameter |
Pin length |
Inner plate depth |
Plate thickness |
Transverse pitch |
Breaking load |
Weight per meter |
| P |
d1 max |
b1 min |
d2 max |
L max |
Lc max |
h2 max |
t/T max |
Pt |
Q |
q |
| mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
mm |
kN/lbf |
kg/m |
| *04CSS-2 |
6.350 |
3.30 |
3.18 |
2.31 |
14.50 |
15.00 |
6.00 |
0.80 |
6.40 |
5.0/1124 |
0.28 |
| *06CSS-2 |
9.525 |
5.08 |
4.77 |
3.58 |
22.50 |
23.30 |
9.00 |
1.30 |
10.13 |
11.0/2473 |
0.70 |
| 08ASS-2 |
12.700 |
7.95 |
7.85 |
3.96 |
31.00 |
32.20 |
12.00 |
1.50 |
14.38 |
19.2/4316 |
1.30 |
| 41SS-2 |
12.700 |
7.77 |
6.25 |
3.53 |
25.70 |
26.90 |
9.91 |
1.30 |
11.95 |
12.0/2698 |
0.91 |
| 10ASS-2 |
15.875 |
10.16 |
9.40 |
5.08 |
38.90 |
40.40 |
15.09 |
2.03 |
18.11 |
30.4/6834 |
2.18 |
| 12ASS-2 |
19.050 |
11.91 |
12.57 |
5.94 |
48.80 |
50.50 |
18.00 |
2.42 |
22.78 |
43.4/9757 |
2.92 |
| 16ASS-2 |
25.400 |
15.88 |
15.75 |
7.92 |
62.70 |
64.30 |
24.00 |
3.25 |
29.29 |
77.8/17490 |
5.15 |
| 20ASS-2 |
31.750 |
19.05 |
18.90 |
9.53 |
76.40 |
80.50 |
30.00 |
4.00 |
35.76 |
120.0/26977 |
7.80 |
| 24ASS-2 |
38.100 |
22.23 |
25.22 |
11.10 |
95.80 |
99.70 |
35.70 |
4.80 |
45.44 |
150.0/33720 |
11.70 |
| 28ASS-2 |
44.450 |
25.40 |
25.22 |
12.70 |
103.30 |
107.90 |
41.00 |
5.60 |
48.87 |
204.0/45859 |
15.14 |
| 32ASS-2 |
50.800 |
28.58 |
31.55 |
14.27 |
123.30 |
128.10 |
47.80 |
6.40 |
58.55 |
267.6/60156 |
20.14 |
| 04BSS-2 |
6.000 |
4.00 |
2.80 |
1.85 |
12.30 |
13.30 |
5.00 |
0.60 |
5.50 |
4.0/899 |
0.22 |
| 05BSS-2 |
8.000 |
5.00 |
3.00 |
2.31 |
13.90 |
14.50 |
7.10 |
0.80 |
5.64 |
6.2/1394 |
0.37 |
| #06BSS-2 |
9.525 |
6.35 |
5.72 |
3.28 |
23.40 |
24.40 |
8.20 |
1.30 |
10.24 |
11.8/2653 |
0.87 |
| 08BSS-2 |
12.700 |
8.51 |
7.75 |
4.45 |
31.00 |
32.20 |
11.80 |
1.60 |
13.92 |
21.0/4721 |
1.40 |
| 10BSS-2 |
15.875 |
10.16 |
9.65 |
5.08 |
36.10 |
37.50 |
14.70 |
1.70 |
16.59 |
29.1/6542 |
1.96 |
| 12BSS-2 |
19.050 |
12.07 |
11.68 |
5.72 |
42.00 |
43.60 |
16.00 |
1.85 |
19.46 |
37.0/8318 |
2.46 |
| 16BSS-2 |
25.400 |
15.88 |
17.02 |
8.28 |
68.00 |
71.00 |
21.00 |
4.15/3.10 |
31.88 |
70.7/15894 |
5.42 |
| 20BSS-2 |
31.750 |
19.05 |
19.56 |
10.19 |
77.80 |
81.50 |
26.40 |
4.50/3.50 |
36.45 |
105.6/23740 |
7.87 |
| 24BSS-2 |
38.100 |
25.40 |
25.40 |
14.63 |
101.70 |
106.20 |
33.20 |
6.00/4.80 |
48.36 |
182.0/40915 |
12.43 |
| 28BSS-2 |
44.450 |
27.94 |
30.99 |
15.90 |
124.60 |
129.10 |
36.70 |
7.50/6.00 |
59.56 |
216.0/48557 |
16.60 |
| 32BSS-2 |
50.800 |
29.21 |
30.99 |
17.81 |
124.60 |
129.60 |
42.00 |
7.00/6.00 |
58.55 |
270.0/60698 |
20.34 |
| *Bush chain:di in the table indicates the external diameter of the bush |
| #Straight side plates |
Stainless steel short-pitch roller chains are precision transmission chains made of stainless steel. They are an important branch of the roller chain family. Thanks to their short-pitch design (with a small distance between adjacent chain links) and the corrosion resistance of stainless steel, they are widely used in scenarios that have high requirements for precision, cleanliness, and environmental adaptability.
Core Structure and Material
Basic Structure: It follows the classic design of standard roller chains and consists of the following key components:
- Inner chain plates and outer chain plates: Connect adjacent chain links and transmit tension.
- Pins and bushings: Enable flexible rotation of the chain links and reduce friction.
- Rollers: Sleeved outside the bushings, they reduce contact wear when meshing with sprocket teeth and ensure smooth transmission.
The "short-pitch" feature (usually referring to a pitch ≤ 12.7mm, specifically defined in international standards such as ISO 606 or ANSI B29.1) makes it suitable for precision transmission from low to medium speeds, providing more uniform power transmission and higher motion accuracy.
Material Characteristics:
They are mainly made of austenitic stainless steel (such as 304 and 316 grades), which has the following advantages:
- Corrosion resistance: It can resist erosion from water, chemicals, salt spray, etc., and is suitable for humid, acid-alkali, or high-humidity environments.
- High and low temperature resistance: It can remain stable in the temperature range of -20ºC to 400ºC (some models can withstand higher temperatures), making it applicable to extreme temperature scenarios.
- Hygienic performance: It has a smooth surface, is not easy to breed bacteria, is easy to clean, and meets the hygiene standards of the food, pharmaceutical, and other industries.
- Strength and wear resistance: The hardness is enhanced through cold working or heat treatment, and it balances the tensile strength and wear resistance required for transmission (although it is slightly lower than high-strength carbon steel chains, it is more durable in specific environments).
COMPANY PROFILE
Qingdao Star Machine Technology Co., Ltd. is located in the beautiful coastal city of Qingdao. We are a large enterprise group engaged in researching, producing, marketing, and providing technical services. We have three large research and production bases and one large marketing centre specialising 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.
"You provide a request, we'll give you a perfect product".
We uphold the business philosophy "integrity, efficiency, cooperation, innovation", quality first, advanced technology, precision production, integrity management, efficient service, to support our customers with the top quality products and super sophisticated technology.


1. Reliable Quality Assurance System
2. Cutting-Edge Computer-Controlled CNC Machines
3. Bespoke Solutions from Highly Experienced Specialists
4. Customisation 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 customisations 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 proactively with you to offer expert advice and product recommendations so that you can end up with the 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 repair and new assemblies.
Q: Why choose us?
A. We are a manufacturer, and we have manufactured chains for over 20 years.
B. Reliable Quality Assurance System.
C. Cutting-Edge Computer-Controlled CNC Machines;
D. Bespoke Solutions from Highly Experienced Specialists.
E. Customisation and OEM are available for specific applications.
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 customised logo, size, package, etc.
Q: What is your main market?
A: North America, South America, Eastern Europe, Western Europe, Southeast Asia, Africa, Oceania, the Middle East, and Eastern Asia.
Q: Can I get samples from your factory?
A: Yes, Samples can be provided.