China high quality Hypoid Marine Spur Truck Parts Gearboxes Transmission Differential Ring and Pinion Set Gear CZPT D44437 for Jeep worm and wheel gear

Product Description

Product Description

Car Fitment Jeep Wrangler
OE No. D44437FJK
Speed Ratio 11*41
Type Differential Gear
Material 20CrMnTi/ 8620
Hardness HRC58-62
Treatment Carburizing,Hardening,
tempering,high frequency treatment,black coating,zincing,nickelage

We can make all kinds of CHINAMFG Wheel Pinion as per your drawing or sample by our DHL account.

D3571 11/41 CJ5/7/8 CHINAMFG 30 FRONT STD.3.73 72-86
D3571TJ 11/41 TJ (97-06) FRONT CHINAMFG 30 3.73 (SHORT STYLE)
D3571 10/41 CJ5/7 CHINAMFG 30 FRONT STD.4.10
D3571R 10/41 YJ(87-95) FRONT CHINAMFG 30 REVERSE 3.73 XJ(84-91)
D3571TJ 10/41 TJ (97-06) FRONT CHINAMFG 30 4.10 (SHORT STYLE)
D3 0571 9/41 CJ5/7/8 CHINAMFG 30 FRONT STD.4.56 72/86
D3 0571 R 9/41 YJ(87/95) FRONT CHINAMFG 30 REVERSE 4.56 XJ(84-91)
D3 0571 TJ 9/41 TJ(97-06( FONT CHINAMFG 304.56 (SHORT STYLE) XJ(92-01)
D30488 8/39 CJ5/7 CHINAMFG 30 FRONT STD.4.88 72-86
D30488R 8/39 YJ(87-95) FRONT CHINAMFG DANA 30 REVERSE 4.88 XJ(84-91)
D3571JK 8/41 YJ(07-21) FRONT DANA30 5.13 
D35712(47715) 18/49  
D35373 11/41 YJ/TJ CHINAMFG 35 REAR 3.73
D35411 10/41 YJ87-95 /TJ97-06/XJ93-07 CHINAMFG 35 REAR 4.10
D35456 9/41 YJ/TJ CHINAMFG 35 REAR 4.56
D35488 8/39 YJ/TJ CHINAMFG 35 REAR 4.88
D44373 11/41 TJ REAR CHINAMFG 44 3.73
D44409 11/45 TJ REAR CHINAMFG 44 4.10 22745
D44456R 9/41 DANA 44 4.56 REVERSE
D44455 11/50 TJ REAR CHINAMFG 44 4.56 22105
D44455X 11/50  
D44488R 8/39 DANA 44 4.88 REVERSE
D44489 9/44 TJ REAR CHINAMFG 44 4.88 23053
D44489X 9/44  
D44513R 8/41 DANA 44 5.13 REVERSE
D44513 8/41 TJ REAR CHINAMFG 44 5.13
D5 0571 Sep-41  
D50488 Aug-39  
D5571 Aug-41  
D44-4-373 Nov-41 85719
D44-4-342 Dec-41 80364
D44-4-353 46/13 75945
D44-4-307 43/14  
D44-4-346 Nov-38 84707
D44463 37*8 74960
D44410 41*10 80320
D44373 41*11 22736X
D44456 41*9 85713
D44323 42*13 28744
D44331 43*13 23592X
D44307 43*14 22106X
D44354 46*13 22856X
D44427 47*11 23064 JEEP WILLYS 11*47 8125051 ANO 1985(CJ6)
D44427X 47*11 CHRYSLER
D44538 43*8  
D44-3-342 41*12 660150
D6571 37*9 74905 CHINAMFG 3F,D60-411,9X37
D6571 41*10 24807(FORD250)
D6571 41*11 25538
D6 0571 46*13 24813
D6 0571 41*9 FORD F250
D6 0571 X 41*9  
D6571 41*8  
D6571R 41*8  
D60586 41*7  
D6571 43*8 Isuzu NHR,D60-586 7*41
D6571R 43*8  
D60488 39*8  
D60488R 39*8  
D70488 39*8 72148
D7571 41*10 72153
D7571 41*11 72159
D7571 41*8 72150 C30/P30 F350 41*8 5.3
D7 0571 41*9 72152 CHINAMFG F350 75-80
D7 0571 X 46*13 72168
D70-1-410 41*10 72154 CHINAMFG F350 BAJA 75/80 41*10 4.10
D70586 41*7 72156 D300/P300 41*7 5.86
D75-410 41*10 BA457171-X CHINAMFG Cargo
D75-462 37*8 BA457104-X
D8571 41*8 73168
D8571 41*10 73200
D8571X 41*40  
D80430 43*10 76128
D80488 39*8 76138
D80463 37*8 73167
D8571 41*11 76256
D8 0571 46*13 73353

Company Profile


HangZhou CHINAMFG Machinery is a professional manufacture of spiral bevel gear. The company has CNC milling machine, the GLEASON milling machine, rolling inspection machine, gear measuring center, a full set of metallographic analysis, inspection equipment and other related advanced equipment.
Our company owns gear measuring center equipped with advanced testing machines such as contourgraph, universal measuring microscope and full set netlaaographic analysis detector. According to various technical requirements and through procedures of sampling, special inspection and re-examination, multi-indexes of gears like observation, measurement and tracking can be completed.
With our high quality products, high credibility and trusty cooperation, aiming to be a highly specialized gear manufacturer of high level and all-directional service,we are looking CHINAMFG to your  business negotiation and our promising cooperation.



Q1: Are your products standard?
A: Our model is standard, if you have specific demand, pls tell us the details. 
Q2: What is you main categories?
A: Commercial Vehicles Like Isuzu,Nissan, Hino, CHINAMFG ,Toyota , Mazda ,Suzuki, Agricultural Machinery and Electric Storage.
Q3: If we don’t find what we want on your website, what should we do? 
A: You can email us the descriptions and pictures of the products you need, we will check whether we have them. 
B: We develop new items every month, and some of them have not been uploaded to website in time. Or you can send us sample by express, we will develop this item for bulk purchasing. 
Q4: What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery. We’ll show you the photos of the products and packages before you pay the balance.
Q5:Do you test all your goods before delivery?
Yes, we have 100% test before delivery.


Application: Motor, Electric Cars, Motorcycle, Machinery, Agricultural Machinery, Car
Hardness: Hardened Tooth Surface
Gear Position: External Gear
Manufacturing Method: Cut Gear
Toothed Portion Shape: Curved Gear
Material: Cast Steel


Customized Request

spur gear

How do you calculate the efficiency of a spur gear?

Calculating the efficiency of a spur gear involves considering the power losses that occur during gear operation. Here’s a detailed explanation:

In a gear system, power is transmitted from the driving gear (input) to the driven gear (output). However, due to various factors such as friction, misalignment, and deformation, some power is lost as heat and other forms of energy. The efficiency of a spur gear represents the ratio of the output power to the input power, taking into account these power losses.

Formula for Calculating Gear Efficiency:

The efficiency (η) of a spur gear can be calculated using the following formula:

η = (Output Power / Input Power) × 100%


η is the efficiency of the gear system expressed as a percentage.

Output Power is the power delivered by the driven gear (output) in the gear system.

Input Power is the power supplied to the driving gear (input) in the gear system.

Factors Affecting Gear Efficiency:

The efficiency of a spur gear is influenced by several factors, including:

  • Tooth Profile: The tooth profile of the gear affects the efficiency. Well-designed gear teeth with accurate involute profiles can minimize friction and power losses during meshing.
  • Lubrication: Proper lubrication between the gear teeth reduces friction, wear, and heat generation, improving gear efficiency. Insufficient or inadequate lubrication can result in increased power losses and reduced efficiency.
  • Gear Material: The selection of gear material affects efficiency. Materials with low friction coefficients and good wear resistance can help minimize power losses. Higher-quality materials and specialized gear coatings can improve efficiency.
  • Gear Alignment and Meshing: Proper alignment and precise meshing of the gear teeth are essential for optimal efficiency. Misalignment or incorrect gear meshing can lead to increased friction, noise, and power losses.
  • Bearing Friction: The efficiency of a gear system is influenced by the friction in the bearings supporting the gear shafts. High-quality bearings with low friction characteristics can contribute to improved gear efficiency.
  • Load Distribution: Uneven load distribution across the gear teeth can result in localized power losses and reduced efficiency. Proper design and gear system configuration should ensure even load distribution.

Interpreting Gear Efficiency:

The calculated gear efficiency indicates the percentage of input power that is effectively transmitted to the output. For example, if a gear system has an efficiency of 90%, it means that 90% of the input power is converted into useful output power, while the remaining 10% is lost as various forms of power dissipation.

It’s important to note that gear efficiency is not constant and can vary with operating conditions, lubrication quality, gear wear, and other factors. The calculated efficiency serves as an estimate and can be influenced by specific system characteristics and design choices.

By considering the factors affecting gear efficiency and implementing proper design, lubrication, and maintenance practices, gear efficiency can be optimized to enhance overall gear system performance and minimize power losses.

spur gear

What lubrication is required for spur gears?

The lubrication requirements for spur gears are essential to ensure smooth operation, minimize wear, reduce friction, and dissipate heat. Here’s a detailed explanation of the lubrication needed for spur gears:

Spur gears typically require lubricants that possess specific characteristics to provide effective lubrication. These lubricants should have the following properties:

  • Viscosity: The lubricant should have the appropriate viscosity to create a sufficient lubricating film between the gear teeth. The viscosity should be suitable for the operating conditions, including the load, speed, and temperature. Higher loads and speeds generally require higher viscosity lubricants to maintain an adequate lubricating film.
  • Extreme Pressure (EP) Properties: Spur gears may experience high contact pressures and sliding friction, especially during heavy load conditions. Lubricants with EP additives are necessary to provide enhanced protection against wear and prevent metal-to-metal contact between the gear teeth. EP additives form a protective film on the gear surfaces, reducing friction and extending gear life.
  • Anti-Wear (AW) Properties: Lubricants for spur gears should have anti-wear properties to protect the gear teeth from excessive wear and surface damage. AW additives form a protective layer on the gear surfaces, reducing friction and preventing metal-to-metal contact. This helps prolong the gear life and maintain gear system efficiency.
  • Oxidation and Corrosion Resistance: The lubricant should possess good oxidation resistance to withstand high operating temperatures without deteriorating. It should also provide corrosion protection to prevent rust and corrosion on the gear surfaces, especially in environments with moisture or aggressive contaminants.
  • Compatibility: The lubricant should be compatible with the materials used in the gear system, including the gear material, shafts, and bearings. It should not cause any adverse reactions or damage to the gear components. Consult the gear manufacturer’s recommendations for lubricant compatibility.

The specific type and grade of lubricant needed for spur gears depend on the application, operating conditions, and gear material. Common lubricants used for spur gears include mineral oils, synthetic oils, and grease. Synthetic lubricants are often preferred for their superior performance in terms of viscosity stability, oxidation resistance, and temperature extremes.

When applying lubrication to spur gears, ensure that the lubricant is evenly distributed across the gear teeth. Proper lubrication can be achieved through methods such as oil bath lubrication, oil mist lubrication, or oil application directly onto the gear teeth. The lubrication interval and quantity should be based on the gear system’s operating conditions and the lubricant manufacturer’s recommendations.

Regular inspection and maintenance of the gear system are necessary to monitor the lubricant condition, replenish as needed, and ensure the gears remain properly lubricated throughout their service life.

It is important to consult the gear manufacturer’s guidelines and recommendations, as they may provide specific lubrication requirements and considerations for their gear products.

spur gear

How do you choose the right size spur gear for your application?

Choosing the right size spur gear for your application requires careful consideration of various factors. Here’s a detailed explanation of the steps involved in selecting the appropriate size spur gear:

  1. Determine the Required Torque: Start by determining the torque requirements of your application. Calculate or estimate the maximum torque that the gear will need to transmit. Consider factors such as the power input, speed, and load conditions to determine the required torque.
  2. Identify the Speed Requirements: Determine the desired rotational speed or RPM (revolutions per minute) for your application. This will help in selecting a gear with the appropriate pitch diameter and tooth configuration to achieve the desired speed.
  3. Consider the Load Conditions: Evaluate the expected load conditions, including the magnitude and direction of the load. Determine if the load is constant or variable, and if it involves shock loads or cyclic loading. This will impact the gear’s durability and load-carrying capacity.
  4. Calculate the Pitch Diameter: Based on the torque and speed requirements, calculate the pitch diameter of the spur gear. The pitch diameter is determined by the formula: Pitch Diameter = (2 x Torque) / (Pressure Angle x Allowable Tooth Shear Stress).
  5. Select the Module Size: Choose an appropriate module size based on the gear size and application requirements. The module size determines the tooth size and spacing. Smaller module sizes are used for fine tooth profiles and higher precision, while larger module sizes are suitable for heavier loads and higher torque applications.
  6. Determine the Number of Teeth: Based on the pitch diameter and module size, calculate the number of teeth required for the gear. Ensure that the gear has an adequate number of teeth for smooth operation, load distribution, and sufficient contact ratio.
  7. Consider Space Constraints: Evaluate the available space and mounting requirements in your application. Ensure that the selected gear size can fit within the available space and can be properly mounted on the shaft or gearbox.
  8. Choose the Material: Consider the operating conditions, such as temperature, humidity, and presence of corrosive substances, to select the appropriate material for the spur gear. Common materials include steel, cast iron, brass, and plastic. Choose a material that offers the necessary strength, wear resistance, and durability for your specific application.
  9. Consider Additional Design Features: Depending on your application requirements, you may need to consider additional design features such as profile shift, hub configuration, and surface treatments. Profile shift can optimize gear performance, while specific hub configurations and surface treatments may be necessary for proper mounting and enhanced durability.

It’s important to note that gear selection is a complex process, and it may require consultation with gear manufacturers or experts in the field. They can provide guidance based on their expertise and assist in selecting the most suitable spur gear for your specific application.

By thoroughly considering factors such as torque requirements, speed, load conditions, pitch diameter, module size, number of teeth, space constraints, material selection, and additional design features, you can choose the right size spur gear that meets the demands of your application in terms of performance, durability, and efficiency.

China high quality Hypoid Marine Spur Truck Parts Gearboxes Transmission Differential Ring and Pinion Set Gear CZPT D44437 for Jeep worm and wheel gearChina high quality Hypoid Marine Spur Truck Parts Gearboxes Transmission Differential Ring and Pinion Set Gear CZPT D44437 for Jeep worm and wheel gear
editor by CX 2023-11-07