China supplier HD300-T38-654 Shank Adapter Furukawa wholesaler

Product Description

The shoulder-type solder tail has a hexagonal shape with an inscribed circle diameter of 22 mm and 25 mm, a length of 108 mm and a length of 159 mm, and is manufactured by a forging process for a light rock drill.
The lug-type shank is used for the inner-turning medium-rail type rock drill, and the diameter of the drill rod is 25mm and 32mm.
The spline type shank is often used for heavy-duty large-scale outer-track rotary rock drills with a diameter of 38mm or more. It is manufactured by common machining methods.
The shank used in China’s mines is mainly made of 35SiMnMoV or 24SiMnNi2CrMo, and the service life of the latter is significantly improved.

T38 T45 T51 Thread Shank Adaptor for Top Hammer drill rig
Shank adaptor or shank adapter, the task of the shank adapter is to transmit rotation torque, feed force, impact energy and flushing medium to the drill string.
The shank adapters from Pro-drill are there fore designed to with stand the high impact power of modern rock drills and made from specially selected material which also is hardened through cauterizing. Around 300 different shank adapters suitable for different rock drills are currently available from CZPT series drifters, Tamrock series drifters, Garden Dever series drifters etc.
Male shank adapters are ideal for drifting, tunneling & extension application where high bending stresses are present, Female shank adapters are used when the drilling space is limited and the total feed length is important.


The rock drill must be maintained in a high degree of maintenance during maintenance and repair. The replacement of the shank, front part, bolts, joints and hydraulic motor can be carried out at the construction site. All other maintenance and repairs must be carried out in a suitable work space and should be isolated from dusting operations.


Matters need attention:

1. Operate in different rock formations, select different types of drill bit, shaft pressure and rotation speed according to the softness and hardness of lithology.
2. When the drilling machine is perforated, it must comply with the original 3 parameters (wind pressure, axial pressure, speed) and the parameters recommended by the drill sample.then work.
3, before the drill bit, please check the appearance of each part, verify the drill wire end face and the drill bit packing box and the factory number on the certificate Consistent to prevent counterfeiting.
4. The drill bit is reasonably stored on the rig to prevent dust and other debris from entering the drill bit.
5. When the drill bit is replaced, it is necessary to ensure that there is no dust inside the drill, the air outlet is smooth, the thread is smeared, and the lifting and turning joints are used.It can be used only after the drill bit is connected.
6. Before replacing a new drill bit, carefully check whether the 3 cones are flexible, and whether the thread and teeth are intact.
7. When the new drill bit is drilled, it is necessary to run the low shaft pressure and low speed for 20-30 minutes, then gradually increase to the normal axial pressure.
8. When the new drill bit is newly opened, it is necessary to pay attention to clear the debris around the hole (rock, scrap metal, etc.), and at the same time,Slow ventilation, close to the surface, to prevent drilling, impact damage to the drill bit.
9. Working in soft rock formations, changing the drill bit in the middle, it is necessary to strictly check the alloy teeth of the outer kidney drill bit and the tooth on the cone.If there is no falling off, etc., if it falls to the bottom of the hole, if there is any old bit residue in the hole, it is strictly forbidden to use the new drill bit in the original hole.
10. When the rig is shut down, the drilling tool cannot be parked in the hole with water to prevent the slag and water from flowing back into the bearing and damage.bad drill bit.
11. When there are cracks in the rock or cracks in the rock caused by the crushing and working in the goaf, reduce the axial pressure and the rotational speed to prevent the teeth.the doctor broke.
12. When the drilling tool is in the hole, it is forbidden to reverse the hole to prevent the bit from falling.
13. When the drill bit is in the hole and the air compressor suddenly stops working, the rock slag is easy to enter the outer head, so it is strictly forbidden to rotate for a long time, resulting in bearing wear, repeated crushing of rock debris (click drill), and bit wear acceleration.
14. During the normal perforation operation, the main air path of the air compressor cannot have a serious air leakage phenomenon to ensure sufficient enthalpy and wind pressure.Extend the life of the drill bit.
15. The stabilizer bar is replaced regularly to ensure the stability of the drill pipe and make the drill bit work normally.
16. It is strictly forbidden to use the curved drill pipe to avoid uneven force on the 3 teeth of the drill bit and accelerate the damage of the drill bit.
17. The drill bit should be protected from moisture and ventilation. It is strictly forbidden to bump the cone and thread during handling.


Compared with the oversea brands, our advantages are bellowing:
A. Our products can match over 95% against the original products
B. Price are competitive against the famous brands and best quality against the small factory


Product Name: shank adaptor
Description: shank adaptor
Shank adaptor is used for transmitting power between drill machine and drill stems.
MOQ: No MOQ required for testing and trial order
Thread: R32,R38,T38,T45,T51
Length: 300mm-800mm
our shank adaptors are available for :


(COP1238,COP1838,COP1032 etc)
(HD715,HD612,HD609,PD200 etc)
(VL140,VL671,YH80A etc)
(HLX5,HL600,HL500,HL300,HL700,HL850,HL1000,HL1500 etc)

If you have interesting about this production,just feel free to contact with me  

Types of Splines

There are 4 types of splines: Involute, Parallel key, helical, and ball. Learn about their characteristics. And, if you’re not sure what they are, you can always request a quotation. These splines are commonly used for building special machinery, repair jobs, and other applications. The CZPT Manufacturing Company manufactures these shafts. It is a specialty manufacturer and we welcome your business.

Involute splines

The involute spline provides a more rigid and durable structure, and is available in a variety of diameters and spline counts. Generally, steel, carbon steel, or titanium are used as raw materials. Other materials, such as carbon fiber, may be suitable. However, titanium can be difficult to produce, so some manufacturers make splines using other constituents.
When splines are used in shafts, they prevent parts from separating during operation. These features make them an ideal choice for securing mechanical assemblies. Splines with inward-curving grooves do not have sharp corners and are therefore less likely to break or separate while they are in operation. These properties help them to withstand high-speed operations, such as braking, accelerating, and reversing.
A male spline is fitted with an externally-oriented face, and a female spline is inserted through the center. The teeth of the male spline typically have chamfered tips to provide clearance with the transition area. The radii and width of the teeth of a male spline are typically larger than those of a female spline. These specifications are specified in ANSI or DIN design manuals.
The effective tooth thickness of a spline depends on the involute profile error and the lead error. Also, the spacing of the spline teeth and keyways can affect the effective tooth thickness. Involute splines in a splined shaft are designed so that at least 25 percent of the spline teeth engage during coupling, which results in a uniform distribution of load and wear on the spline.

Parallel key splines

A parallel splined shaft has a helix of equal-sized grooves around its circumference. These grooves are generally parallel or involute. Splines minimize stress concentrations in stationary joints and allow linear and rotary motion. Splines may be cut or cold-rolled. Cold-rolled splines have more strength than cut spines and are often used in applications that require high strength, accuracy, and a smooth surface.
A parallel key splined shaft features grooves and keys that are parallel to the axis of the shaft. This design is best suited for applications where load bearing is a primary concern and a smooth motion is needed. A parallel key splined shaft can be made from alloy steels, which are iron-based alloys that may also contain chromium, nickel, molybdenum, copper, or other alloying materials.
A splined shaft can be used to transmit torque and provide anti-rotation when operating as a linear guide. These shafts have square profiles that match up with grooves in a mating piece and transmit torque and rotation. They can also be easily changed in length, and are commonly used in aerospace. Its reliability and fatigue life make it an excellent choice for many applications.
The main difference between a parallel key splined shaft and a keyed shaft is that the former offers more flexibility. They lack slots, which reduce torque-transmitting capacity. Splines offer equal load distribution along the gear teeth, which translates into a longer fatigue life for the shaft. In agricultural applications, shaft life is essential. Agricultural equipment, for example, requires the ability to function at high speeds for extended periods of time.

Involute helical splines

Involute splines are a common design for splined shafts. They are the most commonly used type of splined shaft and feature equal spacing among their teeth. The teeth of this design are also shorter than those of the parallel spline shaft, reducing stress concentration. These splines can be used to transmit power to floating or permanently fixed gears, and reduce stress concentrations in the stationary joint. Involute splines are the most common type of splined shaft, and are widely used for a variety of applications in automotive, machine tools, and more.
Involute helical spline shafts are ideal for applications involving axial motion and rotation. They allow for face coupling engagement and disengagement. This design also allows for a larger diameter than a parallel spline shaft. The result is a highly efficient gearbox. Besides being durable, splines can also be used for other applications involving torque and energy transfer.
A new statistical model can be used to determine the number of teeth that engage for a given load. These splines are characterized by a tight fit at the major diameters, thereby transferring concentricity from the shaft to the female spline. A male spline has chamfered tips for clearance with the transition area. ANSI and DIN design manuals specify the different classes of fit.
The design of involute helical splines is similar to that of gears, and their ridges or teeth are matched with the corresponding grooves in a mating piece. It enables torque and rotation to be transferred to a mate piece while maintaining alignment of the 2 components. Different types of splines are used in different applications. Different splines can have different levels of tooth height.

Involute ball splines

When splines are used, they allow the shaft and hub to engage evenly over the shaft’s entire circumference. Because the teeth are evenly spaced, the load that they can transfer is uniform and their position is always the same regardless of shaft length. Whether the shaft is used to transmit torque or to transmit power, splines are a great choice. They provide maximum strength and allow for linear or rotary motion.
There are 3 basic types of splines: helical, crown, and ball. Crown splines feature equally spaced grooves. Crown splines feature involute sides and parallel sides. Helical splines use involute teeth and are often used in small diameter shafts. Ball splines contain a ball bearing inside the splined shaft to facilitate rotary motion and minimize stress concentration in stationary joints.
The 2 types of splines are classified under the ANSI classes of fit. Fillet root splines have teeth that mesh along the longitudinal axis of rotation. Flat root splines have similar teeth, but are intended to optimize strength for short-term use. Both types of splines are important for ensuring the shaft aligns properly and is not misaligned.
The friction coefficient of the hub is a complex process. When the hub is off-center, the center moves in predictable but irregular motion. Moreover, when the shaft is centered, the center may oscillate between being centered and being off-center. To compensate for this, the torque must be adequate to keep the shaft in its axis during all rotation angles. While straight-sided splines provide similar centering, they have lower misalignment load factors.

Keyed shafts

Essentially, splined shafts have teeth or ridges that fit together to transfer torque. Because splines are not as tall as involute gears, they offer uniform torque transfer. Additionally, they provide the opportunity for torque and rotational changes and improve wear resistance. In addition to their durability, splined shafts are popular in the aerospace industry and provide increased reliability and fatigue life.
Keyed shafts are available in different materials, lengths, and diameters. When used in high-power drive applications, they offer higher torque and rotational speeds. The higher torque they produce helps them deliver power to the gearbox. However, they are not as durable as splined shafts, which is why the latter is usually preferred in these applications. And while they’re more expensive, they’re equally effective when it comes to torque delivery.
Parallel keyed shafts have separate profiles and ridges and are used in applications requiring accuracy and precision. Keyed shafts with rolled splines are 35% stronger than cut splines and are used where precision is essential. These splines also have a smooth finish, which can make them a good choice for precision applications. They also work well with gears and other mechanical systems that require accurate torque transfer.
Carbon steel is another material used for splined shafts. Carbon steel is known for its malleability, and its shallow carbon content helps create reliable motion. However, if you’re looking for something more durable, consider ferrous steel. This type contains metals such as nickel, chromium, and molybdenum. And it’s important to remember that carbon steel is not the only material to consider.

China supplier HD300-T38-654 Shank Adapter Furukawa     wholesaler China supplier HD300-T38-654 Shank Adapter Furukawa     wholesaler