Worm Reducer-Replacement of Fenner FV Type Worm Gearbox FV400
Introduction
The Worm Reducer FV400 is a high-quality replacement for the Fenner FV Type Worm Gearbox. Our company offers a cost-effective alternative to the original Fenner gearbox, providing excellent quality and competitive prices. It is essential to note that our products are replacement parts and not original equipment. For purchasing original equipment, please contact the original supplier.
Product Features
- The gearbox housing is made of fine grade C.I. FG-260 cast iron.
- The gearbox is equipped with well-designed heat dissipating fins and a suitable fan to efficiently dissipate heat.
- The entire design is based on BS 721:1963 with precision grade A.
- The gearbox is designed to be interchangeable with standard gearboxes.
- The worm shaft is made of high-quality surface hardened steel, precisely generated and ground for optimal performance.
- The worm wheel is made of high-quality phosphor bronze, cast with an interlayer/spun-cast, with a substantial cross-section for improved rigidity.
- Both the worm shaft and worm wheel shaft are mounted on high-quality tapered roller/angular contact bearings to withstand axial thrust and radial loads.
- With a temperature limit of 90 degrees Celsius under full load, the minimum gear life of all gearboxes is 20,000 hours. The gearboxes require no maintenance and only require checking the oil level every two weeks.
- All worm gearboxes have gear ratios ranging from 5:1 to 70:1.

Choosing the Right Worm Gearbox
The gearbox selection is determined by comparing the actual transmission load with the catalog rated values. However, the actual load conditions may vary or fluctuate based on the application type, and to handle the same, the use of factors must be considered to achieve the equivalent load or design power. Hence, equivalent load = actual load x service factor mechanical rated values and lifespan and/or capacity are measured, assuming continuous operation for 10 hours per day under uniform load conditions. If the equipment operates for more than 10 hours per day, the mechanical service factor should be selected based on the type of prime mover, number of operating hours per day, and the application type to which the device is connected and its load characteristics to ensure proper gear life. The catalog rated value of the selected equipment should be at least equal to or greater than half of the maximum overload achieved during its operation. The gearbox's lifespan can be determined by comparing the actual transmission load with the catalog rated values through the following steps:
- Step 1: Calculate the required ratio.
- Step 2: Calculate the design power based on the load type, operating time, and service factor.
- Step 3: Calculate the output torque.
- Step 4: Select the appropriate device based on the data.

Structure of the Worm Reducer
The Worm Reducer is composed of the following parts:
- Worm shaft
- Worm wheel
- Gearbox housing
- Heat dissipating fins
- Fan
- Tapered roller/angular contact bearings

Fenner Worm Gearbox Replacement
Our company specializes in providing replacement worm gearboxes for Fenner brand. Here are the advantages of choosing our replacement worm gearboxes:
- Superior Quality: Our worm gearboxes are made with the highest quality materials and precision manufacturing processes, ensuring their durability and reliability.
- Competitive Prices: We offer cost-effective prices for our replacement worm gearboxes, providing excellent value for our customers.
- Replacement Parts: It is important to note that our products are replacement parts and not original equipment. For purchasing original equipment, please contact the original supplier.

Furthermore, we welcome custom orders based on specific requirements and designs from our valued customers.
Possible Issues with Worm Gearboxes
| Problem | Cause | Solution |
|---|---|---|
| Gearbox overheating | Excessive load or inadequate lubrication | Reduce load or improve lubrication |
| Gearbox noise | Misalignment or worn gears | Align gears or replace worn components |
| Vibration | Imbalance or misalignment | Balance or align the gearbox |
| Oil leakage | Seal damage or excessive pressure | Replace seals or relieve excessive pressure |
| Gearbox not working | Motor or power supply issues | Check motor and power supply connections |
Installation Considerations
Proper installation of the worm gearbox is essential to minimize fluctuations or the impact of heavy loads. It is crucial to ensure alignment by using locating pins to position the gears correctly, preferably in a diagonal direction. The use of flexible couplings (gear coupling flanges with rubber inserts/tire couplings) is highly important for enhancing the performance of the gearbox. The couplings should be aligned to avoid angular and eccentric misalignment.

Electric Motors for Worm Gear Reducers
Electric motors play a vital role in the operation of worm gear reducers. They provide the necessary power to drive the gearbox, ensuring smooth and efficient transmission. Our company also offers a wide range of electric motors for sale, complementing the performance of our worm gear reducers.

Additional information
| Edited by | Zqq |
|---|
Product Quick Detail:
- Standard and non-standard available
- With high quality and competitive price
- Prompt delivery
- Packing as per customer’s demand.
We promise will offer the best price by the high quality in china! We also accept special order about the products. If you are interested in our products. Please do not hesitate to let us know.We are pleased to give you the detailed information.We promise that our products would be safety and were in high quality and reasonable price. If you are interested in our products, please contact us asap.We are sincerely looking for your cooperation.
Most of our products are exported to Europe or Americas, both standard and nonstandard products available. We can produce as per your drawing or sample. Material can be standard or as per your special request. If you choose us, you choose reliable.

Materials Available
1. Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS420
2. Steel:C45(K1045), C46(K1046),C20
3. Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200(CuZn37), C28000(CuZn40)
4. Bronze: C51000, C52100, C54400, etc
5. Iron: 1213, 12L14,1215
6. Aluminum: Al6061, Al6063
7.OEM according to your request
Surface Treatment
Annealing, natural canonization, heat treatment, polishing, nickel plating, chrome plating, zinc plating,yellow passivization, gold passivization, satin, Black surface painted etc.
Processing Method
CNC machining, punch,turning, milling, drilling, grinding, broaching, welding and assembly
QC & Certificate
Technicians self-check in production,final-check before package by professional Quality inspector
ISO9001:2008 , ISO14001:2001,ISO/TS 16949:2009
Package & Lead Time
Size: Drawings
Wooden Case/Container and pallet, or as per customized specifications.
15-25days samples. 30-45days offcial order
Port: Shanghai/Ningbo port





