QLS303cg Series Double-Pin Industrial Transmission Inverted Tooth Silent Chains

• Customization: Available
• Standard or Nonstandard: Standard
• Application: Textile Machinery, Garment Machinery, Conveyer Equipment, Packaging Machinery, Electric Cars, Motorcycle, Food Machinery, Marine, Mining Equipment, Agricultural Machinery, Car
• Model NO.: QLS312DCG/QLS308CG/QLS402CG
• Surface Treatment: Polishing
• Structure: Roller Chain
• Material: Stainless Steel
• Type: QLS Series Double-Pin Chains
• Function: Moisture and Acid Against
• Color: Natural
• Certificate: ANSI/DIN/ISO
• Packaging: Industrial Packing or Customers′ Request
• Usage: Conveyor Chain, Driving Chain
• Feature: Corrosion Resistant
• Attachment: Can Be Customize
• Logo: Smcc
• Transport Package: Cartoon Box / Wooden Case
• Specification: Customer′s packaging requirements can be customize
• Trademark: SMCC or No Mark
• Origin: China
• HS Code: 7315119000
• Production Capacity: 5000000/Year
• Package Size: 50.00cm * 40.00cm * 30.00cm
• Package Gross Weight: 50.000kg

Product Description

 

    

Chain Number	Pitch p,(mm)	Plate Width b,(mm)	Pin Length L,(mm)	Plate Depth h,(mm)	Breaking Load(kN)	Weight per Metre(kg)	Other Name
QLS303CG	9.525	10.4	13.2	9.4	9	0.6	SC3
QLS303CG		16.5	19.6		13	0.7
QLS304CG		22.6	25.9		18	1.0
QLS305CG		28.7	32.3		22	1.3
QLS306CG		34.5	38.6		26	1.6
QLS308CG		46.7	51.3		35	2.1
QLS310CG		58.9	64.0		44	2.7
QLS312DCG		70.9	76.2		53	3.1
QLS316DCG		95.0	101.6		70	4.2
QLS402CG	12.7	10.7	14.0	11.9	12	0.7	SC4
QLS403CG		16.8	20.6		18	1.0
QLS404CG		22.9	26.9		23	1.3
QLS405CG		29.0	33.3		29	1.6
QLS406CG		35.3	39.6		35	2.1
QLS408CG		47.5	52.3		47	2.7
QLS410CG		59.7	65.0		58	3.4
QLS412CG		72.1	78.0		70	4.0
QLS414CG		84.3	90.7		82	4.8
QLS416DCG		96.8	103.4		93	5.4
QLS420DCG		121.2	129.0		117	6.7
QLS424DCG		145.8	154.7		140	8.0
QLS428DCG		170.4	180.1		163	9.4

            

 

The Silent Roller Chain is an optimized transmission chain developed based on traditional roller chains, specifically designed to reduce operating noise and improve transmission stability. It is widely used in mechanical transmission scenarios with high requirements for noise control and operational precision, such as precision instruments, medical equipment, food processing machinery, and office automation equipment.

Structural Features:

1. Optimized Link Design
   • The chain plates adopt a thin or arc-transition design to reduce rigid impact during meshing between links and sprockets; some models are equipped with buffer coatings (such as nylon or rubber) on the surface of chain plates to further absorb vibration energy.
   • The fit clearance between rollers and bushings is precisely controlled to reduce friction noise during their relative movement while improving rotational flexibility.
2. Silent Guide Structure
   • Some silent roller chains adopt "inner guide" or "outer guide" designs, replacing the side friction of traditional chains with smooth contact between guide plates and guide rails, thereby reducing noise caused by lateral shaking.
   • The back of the chain can be designed to be flat or with buffer strips, adapting to the close-fitting operation with guide components and avoiding impact noise caused by excessive gaps.
3. Materials and Surface Treatment
   • Core components such as chain plates and rollers are mostly made of high-strength alloy steel, which undergoes carburizing, quenching, and other processes to enhance wear resistance and toughness; some environment-friendly models use stainless steel to balance rust resistance and silent requirements.
   • Roller surfaces can be polished, phosphatized, or sprayed with wear-resistant and silent coatings to reduce the friction coefficient when meshing with sprocket tooth surfaces.

Performance Advantages:

• Low-Noise Operation: Through structural optimization and material improvement, the operating noise is 10-30 decibels lower than that of traditional roller chains, especially effective in medium and low-speed transmission scenarios, meeting the strict noise requirements of silent workshops, medical environments, etc.
• Stable Transmission: The flexible contact design between links reduces meshing impact, lowers vibration amplitude, and improves transmission precision, making it suitable for equipment with high requirements for speed stability (such as synchronous transmission in packaging machinery).

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, production, marketing, and technical services. We have 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.
 
 

  "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. 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 manufacturer; we have manufactured valves 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, Middle East, Eastern Asia.
 
Q: Can I get samples from your factory?
A: Yes, Samples can be provided.