PHD Heavy Duty Post Hole Digger Gearbox for Agricultural PTO 3-Point Tractor Attachment

Post Hole Digger Gearbox

Post hole diggers is a tool used to excavate circular or square holes. It consists of a variety of components, including a gearbox.
The gearbox is a container located between the drive shaft of the excavator and the drill bit assembly. Its main function is to transmit force and motion to the drill bit in order to excavate holes. The gearbox transmits power through a set of gears. When the handle rotates, it translates the rotational force of power sources such as motors into a relatively slow but larger torque to better excavate the ground.
In addition, the gearbox can also play a deceleration and steering role to help control the direction and speed of the drill bit. It can also provide support and protection for the machine, so that the drill bit will not be excessively lost when encountering difficulties, thereby maintaining the stability and durability of the device.
Therefore, the gearbox is an irreplaceable part of Post hole diggers, providing important technical support and guarantees to ensure that tools can efficiently excavate holes.

Specifications of Post Hole Digger Gearbox

	PHD-15 gearbox	PHD-26 gearbox	PHD-50 gearbox	PHD-75 gearbox
Torque	1,750 lb.-in. (198 Nm.)	5,133 lb.-in. (580 Nm.)	6,650 lb.-in. (751 Nm.)	10,267 lb.-in. (1,159 Nm.)
Ratios	3:1	2.92:1	3.18:1	4:1
Gear Type	Straight Bevel	Straight Bevel	Straight Bevel	Straight Bevel
Seal Type	Triple Lip/ Spring Loaded	Triple Lip/ Spring Loaded	Triple Lip/ Spring Loaded	Triple Lip/ Spring Loaded
Bearing Type	Tapered, Ball, Needle	Tapered, Ball, Needle	Tapered, Ball, Needle	Tapered Roller
Oil Capacity	25 oz. (0.7 L)	38 oz. (1.1 L)	57 oz. (1.7 L)	138 oz. (4.1 L)
Weight	26 lbs. (11.8 kg.)	48 lbs. (21.8 kg.)	60 lbs. (27.2 kg.)	110 lbs. (49.9 kg.)

How to Select a Suitable Gearbox to Replace the Gearbox on Your Post Hole Digger?

Before replacing the punching machine gearbox, you need to know the following parameters:

• Input and output shaft diameters and lengths

You need to know the diameters and lengths of your punching machine's input and output shafts to ensure that the new gearbox matches the punching machine. In addition, it is also necessary to consider the center distance between the input shaft and the output shaft, which is very important to ensure assembly accuracy.

• Output shaft speed

The output speed of the gearbox needs to match your punching machine equipment to ensure that the required maximum operating speed is achieved.

• Torque

The drilling machine gearbox needs to be able to output sufficient torque to ensure that they can drive the wooden rod directly into the soil. Torque is also an important indicator of a gearbox, so it is important to ensure that the gearbox can provide sufficient torque.

• Installation method and accessories

You need to observe the installation method of the gearbox and the position of its fixed points to determine whether the new gearbox fully matches the punching machine. If accessories such as brakes, clutches, or couplings need to be replaced, ensure that the new gearbox matches or is the same as the old components.

• Brand or manufacturer

Choose a well-known brand or manufacturer to provide you with the more reliable product quality you need. Therefore, you need to check the manufacturer's or brand's technical information or communicate with other professionals or technical support services.

When you determine these parameters, it will be faster and more accurate to select the most suitable punching machine gearbox.

How to Install Gearbox on Your Post Hole Digger?

• Prepare the gearbox and punch: Make sure you have received the correct gearbox, check that it has the correct diameter and length of the input and output shafts, as well as the correct accessories. Then prepare the punching machine and position it in a position suitable for the machine.
• Installing the output shaft: Insert the output shaft of the gearbox into the drive system of the punching machine, ensuring that the output direction of the shaft faces the gearbox application. In addition, ensure that the accessories installed on the gearbox output shaft, such as clamps, couplings, or flywheels, are also properly matched.
• Installing the input shaft: Insert the input shaft of the gearbox into the drive system of the punching machine, ensuring that the input direction of the shaft faces the gearbox application. Similarly, check the diameter and length of the correctly installed input shaft, as well as the components attached to the correlator or flywheel lamp.
• Determining the location and fixing points of the gearbox: It is necessary to ensure that the gearbox is in the correct position, which means determining the fixing points and installation system, and ensuring that the gearbox and the punching machine are stably connected together.
• Perform a final inspection: Finally, check and adjust the position and output torque of the gearbox to ensure successful connection of the gearbox and effective and feasible assembly of the machine.

When installing the gearbox, please ensure that the fixing points and installation system are reliable and stable, which is very important for the performance and life of the drilling machine equipment. If you are unsure how to properly install the gearbox on your punching machine, you can consult a professional or manufacturer.