Description

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Technical Parameters

For example, model 1204, 12 is the outer diameter and 04 is the lead.

1: Accuracy Class C5, C7, C10

2: Rolling Process

3: Medium Carbon Steel S55c Material

4: Diameter 12mm-80mm

5: Custom Length

6: Single Nut Or Double Nut

7: The end is processed according to our standards or customer requirements

I: lead Da: bead diameter n: bead circle number k: rigidity Ca: east rated load Coa: rated load

Model

Reference data of ball screw and nut

Coa

SFU1204-3

2.381

24/22

4.5

593

1129

12.5

Model			Lead Accuracy Class	Thread direction	Number of teeth	Standard Screw Number	Applicable nut type	Longest length of the screw of the conversion stage
Outer Diameter D	lead I	Bead Diameter Da	Lead Accuracy Class	R: Right L: Left	Number of teeth	Standard Screw Number	Applicable nut type	Longest length of the screw of the conversion stage
12	2	1.2	C10,C7	R	1	SCR01202	K	4000
	4	2.5	C10,C7	R	1	SCR01204	U,BSH
	5	2.5	C10,C7	R	1	SCR01205	V,U,BSH,H,A
	10	2.5	C10,C7	R	1	SCR01210-B	V
	20	2.5	C10,C7	R	4	SCR01220	Y

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Product Features and Applications

12 Ball Screw Features

Precision ball screw characteristics

In the form of transmission is divided into two kinds:

(1) The rotary motion is converted into linear motion.

(2) convert linear motion into rotary motion.

High transmission efficiency

The transmission efficiency of the ball screw transmission system is as high as 90% ~ 98%, which is 2~4 times that of the traditional sliding screw system, as shown in the figure, so it can get a larger thrust with a smaller torque, and it can also be changed from linear motion to rotary motion (reversible motion).

Smooth movement

The ball screw drive system is a point contact rolling motion, with low friction resistance, high sensitivity, no vibration when starting, and no crawling at low speed, so it can precisely control the micro feed.

High precision

The temperature rise in the ball screw drive system is small, and the axial clearance can be eliminated by pre-tightening and the screw can be pre-stretched to compensate for thermal elongation, so high positioning accuracy and repeated positioning accuracy can be obtained.

High durability

Steel ball rolling contact are hardened (HRC60 ~ 64) processing, and by precision grinding, the cycle system process is purely rolling, relatively little wear, so it has a high service life and accuracy.

Good synchronization

Due to the smooth movement, sensitive response, no block, no slip, with several sets of the same ball screw drive system at the same time transmission of several identical parts or devices, you can get a good synchronization effect.

High reliability

Compared with other transmission machinery and hydraulic transmission, the failure rate of the ball screw transmission system is very low, and the maintenance is relatively simple. It only needs general lubrication and dustproof. In special occasions, it can work without lubrication.

No backlash and pre-tightening

Using Goethe (Gothic arch) groove shape, axial clearance can be adjusted to be very small, but also light transmission. If the appropriate preload is added to eliminate the axial gap, the screw can have better rigidity, reduce the elastic deformation between the ball and the nut and the screw during the load, and achieve higher accuracy.

12 Ball Screw Applications

CNC machine tools

used to realize the precise feed of the worktable, the movement of the tool holder, etc., to ensure the accuracy and surface quality of the processed parts.

Robot

It can realize the precise motion control of the robot joint, so that the robot can accurately complete various actions and tasks, such as welding, assembly, handling, etc.

Automatic production line

widely used in conveying workbenches, lifting devices, etc., to achieve precise conveying, positioning and assembly of products, and improve production efficiency and quality.

Semiconductor equipment

such as lithography machine, etching machine, etc., require high precision and stability, ball screw is used to achieve the precise positioning and movement of the wafer, to ensure the accuracy of chip manufacturing.

Medical devices

In medical devices, such as CT scanners, linear accelerators, etc., ball screws are used to realize the movement of the scanning bed and the positioning of the radioactive source to ensure the accuracy of medical diagnosis and treatment.

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Product details

Material and hardness

Materials cmd Rigidity

The standard material and hardness of ball screw are shown in the table

(1) Ball screw material and hardness Ball scren materidl and rigidity

Part Name	Materials	heat treatment thermal method	Hardness (HRC)
Precision grade ball screw	50CrMo4 QT	Medium cycle heat treatment (medium frequency)	60-64 South Korea imports
BALL SCREW	S55C	Medium cycle heat treatment (medium frequency)	60-64 South Korea imports
Nut	SCM415H	carburizing heat treatment	58-62 South Korea imported round bars
Nut	20CrMo	vacuum heat treatment	60-64 domestic round bar

(2) Medium-cycle heat treatment

Alternating current completes a complete change (I. e. a sinusoidal waveform) called a cycle.

The time required for each change to complete a cycle is called a cycle. With the symbol T, the unit is seconds.

The number of cycles of alternating current changes per second is called frequency. It is indicated by the symbol f, and the unit is Hertz or cycle/second.

Lubrication Lubricating

Ball screw used by the lubricant, grease is the use of lithium-based lubricating base oil,

Its viscosity 30 ~ 40cst(40 ℃) lubricating oil using ISO grade 32~100.

Select:

(1) Low-temperature applications: Use a lubricant with a low base oil viscosity.

(2) high temperature, high load or shaking, low-speed use: the use of high viscosity base oil lubricants.

Table 6-3 shows the general indicators of lubricant inspection and replenishment intervals. When replenishing, wipe off the old lubricating fluid attached to the screw shaft and then replenish it.

Check amd supplies of inspection and supply interval Lubricant of lubricant

Lubrication method	Inspection Interval	Inspection Items	Replenishment or Replacement Interval
Automatic interval oil feeding	Every 1 weeks	Oil quantity and dirt	Replenish during each inspection, but make appropriate replenishment depending on the capacity of the oil tank.
Grease	Initial 2-3 months of work	Whether foreign matter is mixed in	It is usually replenished every year, but it is supplemented as appropriate according to the results of the inspection.
Oil bath	Before Daily Commencement	Oil level management	Appropriate supplementation depending on consumption.

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Dust prevention

12 The ball screw pair is the same as the rolling bearing. When foreign matter or moisture is mixed, the wear will accelerate, and in severe cases, it may even cause damage. In view of this, the company's ball screw nut before and after both ends are attached to the scraper, in order to achieve the effect of dust. In addition, the scraper at the end of the flange surface is added with an O-type collar to prevent oil leakage.

The production process

Process: peeling (from model 25)-straightening (coarse adjustment)-grinding machine (coarse grinding)-straightening (fine adjustment)-grinding machine (fine grinding)-rolling mill-quenching-polishing-warehousing inspection-finished products.

Straightness

Straightening: coarse adjustment 0.15(1605-5020 model)
Straightening: fine adjustment 0.05(1605-5020 model)
Straightening: coarse adjustment 0.15(6310-8020 model)
Straightening: fine adjustment 0.10(6310-8020 model)

This paper introduces the production equipment, generation process, raw materials, technical team, internal and external scenes of the company, quality certification and other information. Consider uploading videos to reassure users of purchasing concerns.

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Inspection before warehousing

The appearance of the raceway is free of cracking and deformation, the pitch diameter of the screw rod is 0.005mm, the outer circle of the screw rod is 0 '-0.1mm, and the roundness is ≤ 0.003mm. There is no node jam when the nut travels, the lead is positive and negative 0.05, whether the nut is consistent, whether the screw rod is clean after polishing, and the screw rod contact point (45±2 on both sides is uniform)

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Product qualification

We have professional testing instruments to ensure positioning accuracy. The pitch is controlled by a pitch projector. The hardness is controlled by a hardness tester. Straightness is controlled by the straightening machine. We have a professional quality control department to guarantee to provide customers with quality products. In order to ensure the quality, performance and safety of ball screws, Delia's products usually need to pass international or industry certification. You can trust us completely. From the accuracy level, rigidity and preloading, life and reliability, materials and heat treatment, manufacturing process, etc., we carry out layers of checks, is bound to do the best ball screw.

Delivery, shipping and serving

Since the ground ball screw is produced by millimeter processing, the delivery time is longer than that of the rolling ball screw. Usually we need 7 to 30 days of production, depending on the product and length. We usually pack the precision ball screw in wooden case to protect the goods on the way. Small quantities of goods can be sent by ordinary express, large quantities of goods can be sent by sea. We have rich experience in exporting goods to many countries, and we provide you with 1 year of maintenance and quality service, so that you can worry-free after-sales.