Basic Info.
Usage
Petroleum, Construction, Metallurgy
State
The New or Second-Hand
Degree of Automation
Manual, Fully Automatic, Semi-Automatic
Use
Construction, Oil, Metallurgy
Types
Hydraulic Crimping Tool, Hydraulic Wrench, Hydraul
Form
Hydraulic Horse, Hydraulic Pipe Bender, Hydraulic
Maximum Working Pressure
150MPa
High Pressure Hose
State of Freedom
Working Fluid
L-Hm32 or L-Hm46 Hydraulic Fluid
Filter Cleaning
120-200 Mesh Filter Screen
The Material
General Structure with Steel, Mechanical Structure
Apply
Small Space Bolt Pre-Tightening
Configuration
Different Specifications of The Rod Can Be Configu
Product Description
Product Description
NMSD two-stage hydraulic bolt stretcher is a high-quality hydraulic tool designed and produced by our company. It can precisely control and ensure the pre-tightening force of bolt connection. It is an ideal tool to improve the quality of bolt connection and improve labor efficiency. Two-stage hydraulic stretcher with small diameter and large tensile force is suitable for pre-tightening of small space bolts, especially for the inlet bolts (class 12.9 bolts). Widely used in metallurgy, machinery, chemical industry, power station, shipbuilding, cement, coal, pressure vessels and other machinery equipment assembly, installation and maintenance.
NMSD two-stage hydraulic bolt stretcher is made of high quality alloy steel, the maximum working pressure is 150MPa, the pre-load is shown by the pressure gauge of the special hydraulic pump station, can be used to tighten or remove the nut, the high pressure hose is connected by quick connector, easy to operate and use; The same two-stage hydraulic stretcher can be configured with different specifications of the rod, to be suitable for different specifications of bolts, as far as possible to reduce the number of stretchers, thus reducing the economic cost. The product has light weight, simple structure and convenient maintenance.
Bolt tensioner is the abbreviation of bolt hydraulic tensioner, hydraulic tensioner, it with the help of hydraulic booster pump (ultra-high pressure hydraulic pump) provided by the hydraulic source, according to the tensile strength, yield coefficient and elongation of the material to determine the tensile force, the use of ultra-high pressure oil pump generated tensile force, so that the bolt to be applied force in its elastic deformation zone is elongated, bolt diameter slightly deformed, so that the nut is easy to loosen, in addition can also be used as a hydraulic interference connection to apply axial force device, top pressure installation. The biggest advantage of the tensioner is that multiple bolts can be tightened and disassembled at the same time, and the distribution force is uniform, which is a safe, efficient and fast tool is the best way to tighten and disassemble bolts of various specifications. Used in petrochemical, nuclear power, wind power, hydropower, thermal power, shipbuilding, railway, aerospace, mining, heavy machinery and other fields. According to different working conditions and user requirements, special tensioner design can be made.Features
Main Features:
1. Maximum pressure 150Mpa;
2. Compact structure, light weight, high tensile force;
3. Suitable for a variety of specifications bolt stretching, replacing the stretching head and nut sleeve;
4. Spring return, overstroke automatic overflow, stroke indicator, safe and convenient to use;
5. It can be used for synchronous stretching of multiple bolts;
6. Can be equipped with manual hydraulic pump, electric hydraulic pump or pneumatic hydraulic pump;
7. The tensioner can be customized according to the user's working conditions and non-standard.
Method of Use:
1. Place the stretcher
Place the stretcher on the bolt and use a ratchet wrench to turn the hole of the pull rod so that the internal thread of the pull rod and the bolt thread are screwed together. At the same time, rotate the gear in the gear box to make the dial sleeve on the nut, and then move the dial sleeve to make the nut and the support surface joint. Check whether the base is placed correctly and smoothly. The support surface must be perpendicular to the bolt axis, and the base axis should be coaxial with the bolt axis.
2. Connection
After the two-stage hydraulic bolt stretcher is placed, the stretcher and the hydraulic pump station are connected with a high-pressure hose. One hydraulic pump station can drive multiple stretchers.
3. Stretch the bolt
According to the required tensile force, select the appropriate working pressure;
After connecting the two-stage hydraulic stretcher with the pump station, lock the unloading handle on the pump station, operate the pressure rod up and down, the pump station starts to press up, the tension rod of the stretcher starts to rise, and the bolt is stretched. During operation, pay attention to the pressure gauge pointer, stop operating the pressure rod when the pressure gauge pointer points to the required pressure, and the pressure is finished.
Use a ratchet wrench to rotate the gear in the gear box to drive the turning sleeve and nut to rotate. Observe whether the nut and the support surface are joint through the observation hole. After joint, you can loosen the unloading handle, and the bolts have reached the predetermined pre-tightening effect;
In the process of stretching, attention should also be paid to the movement of the pull rod. If the pressure of the pump station does not reach the required pressure, the pull rod has reached the maximum stroke (see the red warning line), immediately stop the upward pressure, rotate the gear in the gear box with a ratchet wrench to drive the turning sleeve and nut to rotate, loosen the unloading handle on the pump station after the nut is welded with the support surface, and then use a ratchet wrench to dial the hole of the pull rod. Screw the pull rod down, tighten the unloading handle, and repeat the above steps until the pump station pressure reaches the required pressure;
4. Remove the stretcher
When the bolts meet the pre-tightening requirements, loosen the unloading handle on the pump station, that is, remove the stretcher
Warning: It is strictly prohibited to work beyond the warning line and overpressure
Tip: No uppressure is allowed at the pump station until the stretcher is connected to the pre-tightening bolt
Four, precautions
1. When stretching, the lift of the stretcher must be less than the stroke of the stretcher, otherwise it will affect the use of the stretcher and get virtual
False tensile force value, even damage the stretcher. Be sure to pay attention to the red warning line must immediately stop the pressure;
2. The screw length of tie rod and bolt shall be greater than bolt diameter;
3. When pre-tightening and disassembling nuts, the working pressure of the system is strictly prohibited to exceed 150MPa;
4, the high pressure hose should be in a free state, shall not bend into a diameter of less than 500mm circle.
5. When empty hitting the stretcher (that is, before the stretcher is connected with the bolts to be pre-tightened), the pump station is strictly prohibited from pressing up.
V. Maintenance and maintenance
1. All parts of the stretcher should be kept clean, and there should be no dirt or dust around the oil pump, oil cylinder and hose.
2. The working fluid is L-HM32 or L-HM46 hydraulic oil. It is strictly prohibited to use alcohol, water, glycerin, brake oil and ordinary engine oil as working fluid.
3, the working liquid should be replaced once a year, must be cleaned with 120-200 mesh filter.
4, when not in use, the dial rod and gear to avoid damage, and should be stored in a dry, appropriate temperature indoor.
5. The high-pressure oil pipe shall be properly kept and shall not be eroded by corrosive gas and liquid. Hose due to long-term use and storage, are easy to aging, should be regularly checked and replaced. The hose should be subjected to a pressure test every year.
6. When replacing the cylinder seal, the seal must be installed in the sealing groove, otherwise the pressure cannot be established.Precautions:
1. When stretching, the lift of the stretcher must be less than the stroke of the stretcher, otherwise it will affect the use of the stretcher and get virtual
False tensile force value, even damage the stretcher. Be sure to pay attention to the red warning line must immediately stop the pressure;
2. The screw length of tie rod and bolt shall be greater than bolt diameter;
3. When pre-tightening and disassembling nuts, the working pressure of the system is strictly prohibited to exceed 150MPa;
4, the high pressure hose should be in a free state, shall not bend into a diameter of less than 500mm circle.
5. When empty hitting the stretcher (that is, before the stretcher is connected with the bolts to be pre-tightened), the pump station is strictly prohibited from pressing up.
Maintenance and maintenance:
1. All parts of the stretcher should be kept clean, and there should be no dirt or dust around the oil pump, oil cylinder and hose.
2. The working fluid is L-HM32 or L-HM46 hydraulic oil. It is strictly prohibited to use alcohol, water, glycerin, brake oil and ordinary engine oil as working fluid.
3, the working liquid should be replaced once a year, must be cleaned with 120-200 mesh filter.
4, when not in use, the dial rod and gear to avoid damage, and should be stored in a dry, appropriate temperature indoor.
5. The high-pressure oil pipe shall be properly kept and shall not be eroded by corrosive gas and liquid. Hose due to long-term use and storage, are easy to aging, should be regularly checked and replaced. The hose should be subjected to a pressure test every year.
6. When replacing the cylinder seal, the seal must be installed in the sealing groove, otherwise the pressure cannot be established.Company Profile
Construction:
Exhibition:
ENBECK as a high-quality industrial hydraulic equipment and implements R & D supplier, we have always been committed to providing customers with the safest and most stable hydraulic tools and practical solutions.
ENBECK mainly focuses on hydraulic wrenches, hydraulic pump stations, hydraulic tensioners, hydraulic dry jacks, hydraulic cylinders and other hydraulic, electric and pneumatic equipment and tools, serving electric power, petrochemical, metallurgy and other large industrial enterprises, with international leading technology and complete and scientific quality management system. Its technical, sales and maintenance departments are staffed by highly trained professionals. The products have passed ISO9001 quality management system certification. Among them, hydraulic wrenches, hydraulic pumps, hydraulic jacking systems, bolt nut tools and other products are widely used in wind power, nuclear power, coal mines, railway bridges, petrochemical industry, port engineering and other fields.
Quality wins in the future, service creates value, excellent quality and satisfactory service is our eternal pursuit.
All the members of Zhongwei Xinneng (Beijing) Technology Co., Ltd. hope to use all their efforts to win your 100% satisfaction!
Address:
No. 86, Wanxing Road, Changyang, Fangshan District, Beijing, China
Business Type:
Manufacturer/Factory
Business Range:
Tools & Hardware
Company Introduction:
Different kinds of products are available in our company. We′re pleased to get your Inquiry and we will reply you as soon as possible. We stick to the principle of "quality first, service first, continuous improvement and innovation to meet the customers" for the management and "zero defect, zero complaints" as the quality objective.
We always adhere to the integrity and let the benefit of customers, insist on using their own services to impress customers. Companies adhering to the "customer first, forge ahead" business philosophy, adhere to the "customer first" principle to provide our customers with quality service
Business philosophy to focus on customers to provide customers with high quality and satisfactory consulting services, to solve the difficulties faced by the enterprise, win the recognition and trust of customers, make it a long-term partner. Seek development to build good at learning, innovation, technology leading, cooperation team, to create people-oriented and embodiment, contribution of the business environment, so that employees and enterprises grow together.
1. Implementation of "three guarantees" for product quality, with a one-year period of "three guarantees".
2. Factory products to achieve high quality and reliable.
3. In case of quality problems during the use of products by users, we shall give a written reply or send service personnel to the factory within 24 hours after receiving the user′s notice, and do not remove the fault and service personnel do not withdraw from the site.
4. During the "Three Guarantees" period, the supplier shall be responsible for the repair and replacement of any faults and damaged parts due to normal use (except the wearing parts).
5. The supplier guarantees to provide maintenance parts and accessories for the products delivered by the factory. The supplier has a library of 10 million yuan of damaged parts and accessories, and provides the necessary parts and accessories for equipment repair and maintenance for domestic and foreign users all the year round. Quality assurance company implements "total quality management" and "quality inversion method", and implements IS09001 system certification.
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