Plastic Spur Gears with Steel Core
Steel hubs are fused and fixed to reinforced nylon gears for secure fastening.
Plastic Spur Gears with Steel Core Description
Plastic gears(Plastic Spur Gears with Steel Core) are commonly working in inside various machines such as food processing machines, home appliances, chemical-related machines, toys, and medical equipment.
Commonly used materials for plastic gears are engineering plastic polyoxymethylene (POM), polyamide MC nylon, U-PE, PEEK, etc.
In addition, when using plastic gears, if the ambient temperature changes significantly, the gear hole diameter is large, and the keyway load is large, Using the S45C or stainless steel hubs. When using S45C or stainless steel hubs, the teeth and the hub are typically fixing with bolts. However, when the bolts is not working well, spur gears use a fusion method to improve the teeth and the corner. Our spur gears (steel core plastic spur gears) are designed to have more vital fused parts than the teeth of the gears.
Plastic gears have many advantages, such as being lightweight, no rust, and high quietness. On the other hand, plastic gears have shortcomings, such as low strength, ease of heat, and significant dimensional changes such as tooth clearance compared with metal gears. However, the degree of dimensional change easily caused by plastic gears varies depending on the material’s resistance to temperature changes, water absorption, and chemical resistance.
| Plastic Spur Gears with Steel Cores Specification | |
|---|---|
| Precision Grade | JIS grade N9 (JIS B1702-1: 1998) JIS grade 5 (JIS B1702: 1976) |
| Gear Teeth | Standard full depth |
| Pressure Angle | 20° |
| Material | MC602ST with S45C core |
| Heat Treatment | — |
| Tooth Hardness | (115 ~ 120HRR) |
Primary information
| Product No. NSU1-50 | |||
|---|---|---|---|
| Module | 1 | Number Of Teeth | 50 |
| Shape | S1 | Bore (A) | 10mm |
| Hub Diameter (B) | 30mm | Pitch Diameter (C) | 50mm |
| Outside Diameter (D) | 52mm | Face Width (E) | 10mm |
| Hub Width (F) | 10mm | Total Length (G) | 20mm |
| Metal Core Diameter | 34 | Series Code | 12 |
| Backlash Low | 0mm | Backlash Up | 0.34mm |
Metal Inserts
Injection-molded metal inserts are working in plastic gears for a variety of reasons:
- To avoid an extra finishing operation.
- To achieve more excellent dimensional stability because the metal will shrink less and is not sensitive to moisture; it is also a better heat sink.
- To provide greater load-carrying capacity.
- To provide increased rigidity.
- To permit repeated assembly and disassembly.
- To provide a more precise bore to shaft fit.
- As durable support for fasteners, such as set screws to affix the gear to the shaft.
Inserts is molding into the part or subsequently assembled. In the case of subsequent assembly, stress concentrations may be present and lead to cracking of the components. The interference limits for press fits obey to depend on the material used; also, proper minimum wall thicknesses around the inserts must be observed. The insertion of inserts may be accomplished by ultrasonically driving in the insert. In this case, the material melts into the knurling at the insert periphery.
Screw machine is usually producing innserts and the innserts are making of aluminum or brass. This will reduce the residual stresses in the plastic part of the gear during a contraction while cooling after molding.
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What Products Do you sell ?
We are a group of factories, give customer one stop solution of power transmission and industrial products. We are in the position to supply wide range of products, including chains, sprockets, v-belt and v-belt pulleys, timing belt and timing belt pulleys, gears, speed reducers, motors, racks, couplings, and many other parts, like locking assembly, taper bushing, Chain guide, shaft collar, torque limiter, cam clutch, universal joint, motor base and motor slide, rod end, clevis, rubber mount, etc. We make special parts according to drawings and/or samples.
How to choose a gearbox which meets our requirement?
You can refer to our catalogue to choose the gearbox or we can help to choose when you provide
the technical information of required output torque, output speed and motor parameter etc.
What information shall we give before placing a purchase order?
a) Type of the gearbox, ratio, input and output type, input flange, mounting position, and motor informationetc.
b) Housing color.
c) Purchase quantity.
d) Other special requirements.
What industries are your gearboxes being used?
Our gearboxes are widely used in the areas of textile, food processing, beverage, chemical industry,
escalator,automatic storage equipment, metallurgy, tabacco, environmental protection, logistics and etc.
What is the producing process?
Production process including raw material cutting, machine processing, grinding, accessories cleaning, assemble, cleaning, stoving, oil coating, cover pressing, testing, package.
How to control the products quality?
Combining advanced equipment and strict management, we provide high standard and quality bearings for our customers all over the world.
What is the transportation?
-If small quantity , we Suggest to send by express, such as DHL,UPS, TNT FEDEX. If large amount, by air or sea shipping.
Can we design packaging?
-Yes. Default is regular packing, and we can make customer's own packing.
Can you provide OEM service?
-Yes, we work on OEM orders. Which means size, quantity, design, packing solution, etc will depend on your requests; and your logo will be customized on our products.
Can you give me discount on Power Transmissions Parts and Industrial parts?
-Yes, of course. Pls. send me your Email, you'll get more
Q: Are You a trading company or a manufacturer?
A: We Are the factory and have our Own trading company
Q: How Can I get an offer?
A: please send US quotation information: drawings, materials, weight, quantity and requirements, we can accept PDF, ISGS, DWG, STEP file format. If you don't have the drawings, please send us the samples, we can also quote you according to your samples.
Q: What is your minimum order size?
A: it is usually 100 pieces, but a low quantity is acceptable under some special circumstances.
Q: Do you provide samples? Is it free or extra?
A: Yes, we can provide samples free of charge, but we don't pay the freight.
Q: What is the lead time for mass production?
A: honestly, it depends on the number of orders. Normally, if you don't need the tools, deposit them after 30 days or so.
Q: What if the parts don't Work?
A: we can guarantee the quality, but if it happens, please contact us immediately, take some photos, we will check the problem and solve it as soon as possible.
Q: What are your terms of payment?
A: payment is less than US $1000,100% in advance. Payment: $1000,50% wire transfer in advance, balance before shipment,Other Terms of payment are negotiable
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