Hansheng Automation (Dongguan) Co., Ltd. is one of the most experienced manufacturers and suppliers of l-shaped trapezoidal tooth timing belt pulley in China. If you're going to wholesale bulk cost-effective l-shaped trapezoidal tooth timing belt pulley made in China, welcome to get pricelist and quotation from our factory. Also, customized service and OEM&ODM service are available.
Hansheng Automation is a manufacturer specializing in the production of packaging machinery components. Synchronous pulleys are just one of the industrial control spare parts services we provide. In addition, we also provide core transmission components such as cam indexing tables and hollow rotary tables. Combined with our gear shop, casting plant, and CNC machining center, we are fully capable of providing customers with a complete service from prototyping to roughing, finishing, and post-processing.
Product overview
The L-shaped (Light) Timing Pulley is a critical component for synchronous transmission systems. Designed with a standard trapezoidal tooth profile and a pitch of 9.525mm (0.375 inches), this pulley ensures positive, slip-free engagement with L-series timing belts. It is widely used in medium-duty applications requiring precise positioning and high efficiency.
At Hansheng Automation, we manufacture high-quality L-series pulleys compatible with standard 075 (19.1mm / 0.75") belt widths. Whether you need pilot bore, finished bore, or fully custom solutions, we provide precise machining to meet your specifications.
Product Features and Advantages
Precise transmission
Trapezoidal tooth meshing design ensures accurate transmission ratio and high positioning accuracy;
Durable and Wear-Resistant
Available in materials such as gray cast iron, 45 steel, and aluminum alloy, offering wear resistance and resistance to aging;
Maintenance-Free
No lubrication required, reducing maintenance costs, suitable for high-speed and quiet transmission applications;
Standardized Compatibility
Compliant with industry standards, compatible with L-type synchronous belts of widths such as 075/19.1mm.
Specifications and Parameters (for reference)
Key Parameter Description
1.Tooth profile: L-type trapezoidal teeth, pitch 9.525mm (0.375 inches);
2.Width specifications: Standard belt width 075/19.1mm (0.75 inches), compatible with belts of the same width;
3.Shaft Hole Specifications: Inner hole diameter 8-14mm (see specification table for details), custom non-standard hole diameters available.
| Specification | Number of Teeth | Shape | Pitch Diameter (mm) | Outer Diameter (mm) | W (mm) | L (mm) | K (mm) | X (mm) | Hub Diameter (mm) | Bore (mm) | Through Hole Diameter (mm) | Flange Outer Diameter (mm) | Flange Inner Diameter (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 10L | 10 | AB | 30.32 | 29.56 | 26 | 38 | 21 | - | 20 | 8 | - | 35 | 22 |
| 12L | 12 | AB | 36.38 | 35.62 | 26 | 38 | 21 | - | 25 | 8 | - | 43 | 28 |
| 14L | 14 | AB | 42.45 | 41.68 | 26 | 38 | 21 | - | 30 | 10 | - | 47 | 34 |
| 15L | 15 | AB | 45.48 | 44.72 | 26 | 38 | 21 | - | 32 | 10 | - | 51 | 36 |
| 16L | 16 | AB | 48.51 | 47.75 | 26 | 38 | 21 | - | 34 | 12 | - | 55 | 39 |
| 17L | 17 | AB | 51.54 | 50.78 | 26 | 38 | 21 | - | 35 | 12 | - | 57 | 41 |
| 18L | 18 | AB | 54.57 | 53.81 | 26 | 38 | 21 | - | 36 | 12 | - | 61 | 41 |
| 19L | 19 | AB | 57.61 | 56.84 | 26 | 38 | 21 | - | 38 | 12 | - | 65 | 50 |
| 20L | 20 | AB | 60.64 | 59.88 | 26 | 38 | 21 | - | 40 | 12 | - | 65 | 50 |
| 21L | 21 | AB | 63.67 | 62.91 | 26 | 38 | 21 | - | 42 | 12 | - | 69 | 50 |
| 22L | 22 | AB | 66.70 | 65.94 | 26 | 38 | 21 | - | 44 | 12 | - | 74 | 53 |
| 24L | 24 | AB | 72.77 | 72.00 | 26 | 38 | 21 | - | 44 | 12 | - | 78 | 58 |
| 25L | 25 | AB | 75.80 | 75.04 | 26 | 38 | 21 | - | 44 | 12 | - | 83 | 63 |
| 26L | 26 | AB | 78.83 | 78.07 | 26 | 38 | 21 | - | 44 | 12 | - | 86 | 66 |
| 28L | 28 | AB | 84.89 | 84.13 | 26 | 38 | 21 | - | 50 | 12 | - | 93 | 75 |
| 30L | 30 | AB | 90.96 | 90.20 | 26 | 38 | 21 | - | 50 | 14 | - | 99 | 78 |
| 32L | 32 | AB | 97.02 | 96.26 | 26 | 38 | 21 | - | 50 | 14 | - | 105 | 84 |
| 34L | 34 | AB | 103.08 | 102.32 | 26 | 41 | 21 | - | 56 | 14 | - | 112 | 90 |
| 36L | 36 | AB | 109.15 | 108.39 | 26 | 41 | 21 | - | 56 | 14 | - | 115 | 90 |
| 38L | 38 | AB | 115.22 | 114.45 | 26 | 41 | 21 | - | 60 | 14 | - | 126 | 100 |
| 40L | 40 | AB | 121.28 | 120.51 | 26 | 41 | 21 | - | 60 | 14 | - | 126 | 100 |
| 42L | 42 | AB | 127.34 | 126.58 | 26 | 41 | 21 | - | 60 | 14 | - | 131 | 111 |
| 44L | 44 | AB | 133.40 | 132.64 | 26 | 46 | 21 | - | 65 | 14 | - | 138 | 125 |
| 45L | 45 | W | 136.44 | 135.67 | 26 | 46 | 21 | 9 | 65 | 14 | 116 | - | - |
| 48L | 48 | W | 145.53 | 144.77 | 26 | 46 | 21 | 9 | 65 | 14 | 124 | - | - |
| 50L | 50 | W | 151.60 | 150.83 | 26 | 46 | 21 | 9 | 65 | 14 | 130 | - | - |
| 56L | 56 | W | 169.79 | 169.02 | 26 | 46 | 21 | 9 | 65 | 14 | 148 | - | - |
| 60L | 60 | W | 181.91 | 181.15 | 26 | 46 | 21 | 9 | 65 | 14 | 160 | - | - |
| 72L | 72 | W | 218.30 | 217.53 | 26 | 46 | 21 | 9 | 65 | 14 | 197 | - | - |
| 84L | 84 | W | 254.68 | 253.92 | 26 | 46 | 21 | 9 | 65 | 14 | 233 | - | - |
Note:
1. "-" in the table indicates no corresponding data for that specification
2. All dimensions are in millimeters (mm)
3. "L" in the specification indicates L-type trapezoidal tooth, and the number indicates the number of teeth
Material Specifications
We offer L-series timing pulleys in multiple materials to suit different environmental conditions.
Aluminum Alloy (6061/7075): Lightweight, corrosion-resistant, and low inertia. Surface treatment: Clear Anodizing or Hard Anodizing.
Carbon Steel (C45/1045): High strength and durability for heavy-duty load transmission. Surface treatment: Black Oxide or Zinc Plating.
Gray Cast Iron (GG25): Excellent vibration damping and wear resistance, suitable for large diameter pulleys.
Stainless Steel (303/304): For food processing, medical, or corrosive environments.
Application Scenarios
Our L-shaped timing belt pulleys are engineered for a wide range of industrial machinery:
CNC Machines & 3D Printers: For precise axis movement.
Packaging Machinery: Conveyor drives and labeling machines.
Textile Equipment: Synchronized drive systems.
Automation Arms: Lightweight aluminum pulleys for rapid movement.
Selection Recommendations
1.Select the number of teeth (specification) based on the required transmission ratio;
2.Confirm that the shaft diameter matches the inner bore specifications;
3.Must be used with synchronous belts of the same tooth profile (L-type) and width (075/19.1mm).
Customization & OEM Services
Don't see the exact size you need? Hansheng Automation specializes in custom timing pulleys.
Custom Bore Sizes: We can machine the bore to your specific shaft diameter (e.g., 8mm, 12mm, 1/2", 5/8").
Keyway & Set Screws: Standard metric or imperial keyways can be added upon request.
Surface Treatment: We offer Phosphating, Black Oxide, and Anodizing to extend product life.
FAQ
Q: What are the characteristics of the tooth profile and pitch of this timing belt pulley?
A: The L-type trapezoidal tooth timing belt pulley adopts a standard trapezoidal tooth design with a pitch of 9.525mm (0.375 inches in imperial units). This tooth profile, when meshing with an L-type timing belt, ensures accurate transmission ratios and high positioning accuracy, making it suitable for applications requiring high-precision power transmission, such as machine tools and automated production lines.
Q: What materials are available for this synchronous belt pulley? How should different materials be selected?
A: Available materials: gray cast iron, 45 steel, aluminum alloy.
Material characteristics and applicable scenarios:
Gray cast iron: Excellent wear resistance and high strength, suitable for heavy-duty, high-speed transmission applications such as machine tool spindles.
45 steel: Superior comprehensive mechanical properties and strong impact resistance, suitable for high-load transmission applications in textile machinery.
Aluminum alloy: Lightweight and corrosion-resistant, suitable for lightweight equipment such as packaging machinery and applications with high noise requirements.
Q: What does the pulley width specification "075/19.1mm" mean? How does it match the timing belt?
A: With imperial values, "075/19.1mm" denotes that the pulley is compatible with a timing belt width of 0.75 inches (19.1mm). Choose a timing belt such that the teeth profile (L-type) and belt width precisely match the pulley. To guarantee meshing precision and transmission efficiency, an L-type 075 specification timing belt must, for instance, be used with a pulley of the same specification.
Q: Do the pulleys require lubrication? Are maintenance costs high?
A: L-type trapezoidal teeth timing pulleys have a maintenance-free construction, therefore removing the need for lubrication and lowering maintenance costs and downtime. Furthermore appropriate for long-term continuous operation in automated equipment are their silent operation with steady high-speed performance.
Q: How do I select the appropriate number of teeth on the pulley based on the transmission ratio?
A: The formula for the transmission ratio is Number of teeth on the driven pulley ÷ Number of teeth on the driving pulley. In case a 1:2 transmission ratio is needed, for instance, choose a 20-tooth driving pulley; the driven pulley should have 40 teeth. First find the necessary transmission ratio for the equipment, then match the inner bore size depending on the shaft diameter and guarantee compatibility with synchronous belts of the same specification.
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