Basic Info.
Drum Brakes Classification
Main Market
North America, Eastern Asia, Oceania
Transport Package
Wood Pallet Sea Transportation
Specification
MAX DIA 16.62
Product Description
China heavy truck first-class enterprises(Dongfeng,Sino truck, Shannxi Auto, Futon etc)appoint Tang Rong as strategic partners. Export, special vehicles specially use our brake drum.Yutong, Kinglong and gold dragon that leads global bus sales appoint Tang Rong as the excluseve brake drum supplier. The domestic market share for Large and medium-sized buses occupies 85.15%For international market, Tang Rong has cooperated with OEM customers (Hyundai, ArvinMeritor and Hendrickson etc.) in North American, South American, Europe, Australia, Africa, Middle East for many years. 2018 Tang Rong joins in Navistar's supply chain.ProductCasting brake drumMore than 300part numbers that suitable for different vehicles and road condition, and promise to supply same quality brake drums in OEM and aftermarket.Section I- Dimensional Analysis |
Key | Description | Requirements | Measuring mehtod | Tolerance Range |
| | |
Items | High | Low |
1 | Drum Center Bore Diameter | Φ223.03 | inner diameter gauge | Φ223.08 | Φ222.98 |
2 | Flange Inside dia. | Φ337 | Self-made special measuring tool | Φ337.5 | Φ336.5 |
3 | Brake Surface Diameter | Φ419.1 | inner diameter gauge | Φ419.35 | Φ418.85 |
4 | Overall Drum Height | 229.62 | Vernier caliper | 300.2 | 229.22 |
5 | Brake Surface Depth | 136.62 | Depth indicator | 137.13 | 136.11 |
6 | Brake Surface Runout | 0.2 | /runout testing tool/ dial indicator | 0.2 | 0 |
7 | Runout-Flange Inside surface | 0.15 | /runout testing tool/ dial indicator | 0.15 | 0 |
8 | Flange Thickness | 12.45 | OD micrometer | 12.65 | 12.45 |
9 | Bolt Hole Diameter | Φ31.75 | Vernier caliper | Φ32.26 | Φ31.24 |
10 | Bolt Hole Position | 0.76 | /Vernier caliper / comprehensive testing tool | 0.76 | 0 |
11 | Inside Chamfer-Drum Center Bore | 3×45°(2.6-3) | Vernier caliper | 3×45° | 2.6×45° |
12 | Banlance | 30g | Balance machine | 30 | 0 |
13 | Appearance | I -PRT-1 | Visual inspection | | |
Section II- Chemical, Mechanical, and Microstruture Properties |
| | | Chemical Composition | Mechanical Properties | Microstructure |
No. | Pour Date | Description | Total C | Si | Mn | S | P | Cr* | Cu* | Mo* | Tensile Strength | Brinell Hardness | Type | Size | Distribution | %Ferrite+%Cementite%+% | % Pearlite |
Required. | 3.4-3.7 Mandatory | 1.3- 2.1 | 0.6-1.05 | 0.12 Max | 0.15 Max | 0.4 Max | 0.4 Max | 0.4 Max | ≥207 Mpa | 187-241 BHN | VII | 3-5 | Type A | ≤5% | ≥95% |
1 | 021822 | / | 3.43 | 1.76 | 0.81 | 0.05 | 0.046 | 0.3 | 0.12 | / | 304 | 236 | VII | 3 | A | 2% | | 98% |
Address:
No. 168 Fenglei Street, Houma City, Shanxi Province, Linfen, Shanxi, China
Business Type:
Manufacturer/Factory
Business Range:
Auto, Motorcycle Parts & Accessories, Industrial Equipment & Components, Manufacturing & Processing Machinery
Management System Certification:
IATF16949
Company Introduction:
Shanxi Tangrong Machinery Manufacturing Co., Ltd. Was established in 1995, its origin a subsidiary of arms industry group corporations. We specializes in manufacturing brake drums, brake shoes, brake back plates, wheel hubs, etc., and supplies a full range of braking parts for heavy-duty truck, trailer and bus OEM market and aftermarket. For production, the foundry has the capacity of 40, 000-50, 000 tonnes per year, and the machining about 1000, 000 pieces per year. Shanxi Tangrong reaches averagely annual output of 3, 000, 000 pieces. There are 980 employees until 2018.