Selecting a hydraulic torque wrench represents an important capital investment. To ensure that this investment delivers long-term value, both bolting quality and operational safety must be guaranteed. This depends on the coordination of three key factors: tool performance, proper operation, and maintenance management.
The MXTA Series Dual-Drive Hydraulic Torque Wrench has been proven across these three critical dimensions. Featuring an aluminum-titanium alloy housing for heavy-duty applications, ±3% torque accuracy for reliable connections, and a modular design for simplified maintenance, MXTA helps transform every investment into dependable performance.
Choosing the correct hydraulic torque wrench is the first step in ensuring safe and reliable bolting operations. An incorrect selection may result in more than just a failed bolt connection — it can lead to equipment damage, costly downtime, and potential safety risks.
1. Torque Output Requirements
Determine the minimum and maximum torque requirements for your application.
The MXTA Series Hydraulic Torque Wrench offers multiple models covering a torque range from 112 N·m to 72,000 N·m, ensuring that you do not need to replace tools for different bolting requirements.
Selecting a model that comfortably meets your required torque range helps improve operational efficiency and reduce manual effort.
2. Bolt Size and Accessibility
First, identify the required bolt size and strength grade to determine the required torque value. Then consider the physical space around the bolted connection.
The MXTA Series Hydraulic Torque Wrench features:
Square drive output compatible with high-strength sockets for heavy-duty bolting applications.
Integrated aluminum-titanium alloy housing, providing high strength, excellent toughness, and lightweight operation.
360° × 180° swivel hose connector, eliminating space limitations during operation.
360° adjustable reaction arm with trigger locking mechanism, allowing flexible adjustment to different reaction points.
The series includes compact models suitable for limited spaces, such as:
07 MXTA (1.8 kg) for small-size bolts and confined working areas.
It also includes large models designed for:
Heavy machinery
Large flange bolting
Heavy-duty industrial connections
Such as:
50 MXTA (85 kg) for large-scale bolting applications.
3. Working Environment
The MXTA Series Hydraulic Torque Wrench adopts a high-strength aluminum-titanium alloy structure, achieving excellent durability while maintaining a lightweight design.
Its corrosion-resistant properties allow it to handle various demanding working conditions while significantly reducing operator fatigue during long-term bolting operations.
4. Drive Unit Size Compatibility
The MXTA Series provides multiple drive sizes, including:
3/4 inch
1 inch
1-1/2 inch
2-1/2 inch
These sizes are designed to work with standard industrial heavy-duty sockets.
Please ensure that the square drive socket is in good condition. Any worn socket must not be used, as it may fail to securely engage with the nut.
Hydraulic torque wrenches operate under high pressure, with a maximum working pressure of 10,000 psi / 70 MPa and torque output exceeding 50,000 ft·lb / 68,000 N·m.
Under such high-pressure and heavy-duty conditions, only strict compliance with operating procedures can ensure operator safety while achieving the required bolt tightening performance.
1.Before operation, inspect all components of the hydraulic torque wrench to ensure there are no loose parts, damage, cracks, or excessive wear.
2.Read the Operation Manual carefully.
The hydraulic torque wrench adopts a manually controlled double-acting hydraulic design. Always follow the correct connection requirements for the high-pressure and low-pressure ports.
When using hydraulic torque wrenches and dedicated hydraulic pumps from different manufacturers, carefully read the operation manual to avoid equipment damage or personal injury caused by incorrect connections.
3.Pressure-Torque Reference Table
Select the appropriate hydraulic torque wrench according to the required torque value and set the hydraulic pressure accordingly.
The MXTA Series Drive Hydraulic Torque Wrench includes a pressure-to-torque reference table on the tool body. Detailed pressure and torque conversion tables for each model are also provided in the operation manual.
4.Hydraulic Couplings
Ensure that the hydraulic hose couplings are fully connected to both the hydraulic torque wrench and the hydraulic pump.
Pressure Control
Pressure application should always be performed slowly and smoothly.
Any sudden pressurization or pressure release may cause the internal ratchet mechanism of the hydraulic torque wrench to become stuck or experience tooth engagement issues, potentially resulting in equipment downtime or irreversible damage to critical components such as the ratchet mechanism and drive unit.
Reaction Arm Positioning
Ensure that the reaction arm saddle is fully positioned against a strong and secure reaction point, such as:
An adjacent bolt
The flange edge
A dedicated reaction block
Never place the reaction arm against weak, loose, or easily deformable structures.
Personal Safety Protection
During operation, never place hands or any part of the body within the movement range of the reaction arm or in any potential pinch point area between the wrench head and the reaction surface.
This prevents crushing or shearing injuries caused by contact between moving and fixed components.
Pressure Release Before Shutdown
Before removing the tool:
Stop the hydraulic pump.
Release hydraulic pressure.
Confirm that pressure has returned to zero.
Disconnect the hydraulic hoses.
Never disconnect hydraulic hoses while the system is under pressure.
Cleaning and Inspection
Use a soft cloth to clean the tool after operation.
Pay special attention to removing debris from:
The drive unit
The reaction arm
Check all screws on the hydraulic torque wrench for looseness and visually inspect the tool for cracks or damage.
Proper Storage
Store the hydraulic torque wrench in a dry and well-ventilated environment:
Temperature: -20℃ to +50℃
Humidity: <80%
Place the tool flat inside the storage case.
Do not stack heavy objects on top of the tool.
A hydraulic torque wrench is a precision hydraulic tool. Proper maintenance not only reduces failure rates and premature component damage but also significantly extends service life and reduces capital expenditure (CapEx).
Follow the recommended maintenance procedures below to keep your tool operating at optimal performance.
| Maintenance Item | Frequency | Procedure |
| Calibration | Every 12 months or every 10,000 tightening cycles, whichever comes first | Return to manufacturer or authorized calibration service provider |
| Lubrication | Before each use and every 100 cycles | Performed by operator |
| Hydraulic Hose Inspection | Before and after each use | Visual inspection by operator |
| Component Inspection | Before each use | Visual and manual inspection by operator |
Purpose
Ensure accurate and traceable torque output and prevent bolt connection failures caused by torque deviation.
Requirements
The hydraulic torque wrench must be calibrated according to the manufacturer's recommended calibration interval or after the specified number of tightening cycles.
Recommended calibration frequency:
Every 10,000 tightening cycles
Or every 12 months
(Whichever comes first.)
Calibration Procedure
Calibration must be performed by:
The manufacturer
An authorized service center
A qualified third-party measurement organization
A calibration certificate should be issued after calibration.
After calibration, an effective calibration label should be attached to the tool, showing:
Calibration date
Next calibration due date
Handling Abnormal Conditions
If the hydraulic torque wrench experiences:
Dropping
Impact damage
Suspected internal failure
Stop using the tool immediately and send it for inspection and calibration, regardless of whether the scheduled calibration interval has been reached.
⚠️ Never use a hydraulic torque wrench beyond its valid calibration period for any bolting operation.
Purpose
Reduce friction and wear of transmission components, including:
Ratchet mechanism
Drive unit
Bearings
Prevent rust and ensure smooth operation.
Operating Requirements
Before each use:
Apply an appropriate amount of grease to the ratchet mechanism and square drive connection area.
Use lubricant approved by the manufacturer.
After every 100 tightening cycles:
Apply lubrication again.
During operation:
If the tool movement becomes slow or abnormal noise occurs, stop operation immediately and inspect and lubricate the tool.
Precautions
Do not use:
Ordinary engine oil
Lubricants containing graphite
Lubricants containing molybdenum disulfide additives
These substances may contaminate the hydraulic system or accelerate component wear.
After lubrication:
Remove excess grease to prevent dust and contaminants from accumulating.
Storage Requirements
Hydraulic hose assemblies should be stored in:
Cool
Dry
Light-protected environments
Avoid exposure to:
High-temperature sources such as steam pipes
Welding sparks
Sharp edges
Corrosive chemicals
Pre-Use Inspection
Before every operation, visually inspect the entire hydraulic hose.
Pay special attention to:
Outer Hose Condition
Check for:
Bulges
Cracks
Cuts
Severe wear
Coupling Condition
Check for:
Loose connections
Deformation
Oil leakage
Hose Condition
Check for:
Twisting
Kinking
Excessive bending
Replacement Requirements
Any hydraulic hose assembly showing the above damage signs must be replaced immediately.
Never attempt to repair or continue using damaged hydraulic hoses.
Service Life
It is recommended to replace hydraulic hose assemblies every 2 years, even if no visible damage is present.
Rubber materials may deteriorate over time and reduce safety performance.
⚠️ A high-pressure hose rupture may cause hydraulic oil injection injuries. Never use damaged hoses.
Component Inspection (Daily Inspection)
Before each use, conduct a complete inspection of the hydraulic torque wrench according to the following checklist:
| Inspection Area | Inspection Items | Acceptance Criteria |
|---|---|---|
| Hydraulic Torque Wrench Body | Check for cracks, deformation, or severe impact damage on the housing | No cracks or obvious deformation |
| Ratchet Mechanism | Check for tooth wear, broken teeth, or abnormal scratches | Teeth structure complete, no obvious wear |
| Square Drive | Check for deformation, wear, or corrosion | Correct dimensions and secure engagement |
| Reaction Arm | Check for bending, cracks, or excessive wear on the saddle surface | Straight, crack-free, and flat contact surface |
| Hydraulic Couplings | Check for oil leakage, looseness, or damage | Secure connection without leakage |
| Pressure Gauge | Check for damaged dial and confirm pointer returns to zero | Good appearance and accurate zero position |
| Switch | Check switch operation and cable condition | Smooth operation and intact cable insulation |
Handling Requirements
If any abnormal condition or damage is found during inspection:
Stop using the equipment immediately.
Attach a "To Be Repaired" label.
Arrange repair or replacement as soon as possible.
Never put damaged or potentially unsafe equipment into operation.
6. Maintenance Record Management
It is recommended to establish a maintenance record file for each hydraulic torque wrench, including:
Tool identification number and purchase date
Each calibration date, calibration result, and next calibration due date
Maintenance date, maintenance contents, and operator information
Failure and repair records
Hydraulic hose replacement dates
Complete maintenance records are an important part of full lifecycle equipment management and can also provide traceability evidence during quality audits or management reviews.
Operation: Lightweight, Flexible, and Precise
Lightweight Design
The aluminum-titanium alloy housing reduces weight by approximately 35%–40% compared with traditional steel hydraulic torque wrenches, effectively reducing operator fatigue.
Flexible Adaptability
The 360° × 180° swivel hose connector prevents hose twisting, while the 360° adjustable reaction arm adapts to various confined working environments.
Precise Torque Output
The double-acting hydraulic design provides stable torque accuracy within ±3%, ensuring reliable bolted connections.
Efficient Switching
The button-type drive unit release allows quick switching between tightening and loosening operations without additional tools.
Maintenance: Durable and Easy
Core Durability
The coarse-tooth ratchet system improves wear resistance by more than 50%.
Critical components undergo heat treatment processes to eliminate internal stress and improve durability.
Fast Maintenance
The modular design allows routine component replacement to be completed in approximately 15 minutes, reducing equipment downtime.
Selecting, operating, and maintaining a hydraulic torque wrench does not need to be complicated.
By following these guidelines and choosing the reliable MXTA Series Hydraulic Torque Wrench, professionals can achieve safe, accurate, and dependable bolting performance for years to come.
For professionals pursuing excellent bolting quality, MXTA Series is a reliable choice.
Determine the required torque range and maximum bolt size first.
The MXTA Series Hydraulic Torque Wrench offers 11 models with a torque range from 112 N·m to 72,000 N·m, covering bolt sizes from M14 to M125.
Choose a model with an operating range that comfortably meets your torque requirements.
The hydraulic torque wrench should be calibrated:
Every 12 months
Or every 10,000 tightening cycles
Whichever comes first.
Carefully read the operation manual before use.
Pay special attention when using hydraulic torque wrenches and dedicated hydraulic pumps from different manufacturers, as different brands may have different designs.
Incorrect connections may result in equipment damage or personal injury.
The MXTA Series uses a square drive output with the following drive sizes:
3/4 inch
1 inch
1-1/2 inch
2-1/2 inch
These sizes are suitable for heavy-duty bolt tightening and loosening applications.
Use high-strength sockets, such as chrome molybdenum steel sockets.
After installing the socket, always insert the locking pin to prevent the socket from coming loose.
Please refer to the section:"Shutdown and Storage"
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