For engineers and technicians working in manufacturing, construction, or any industry relying on precise bolted connections, a properly functioning torque wrench is an indispensable tool. However, like any piece of equipment, torque wrenches are subject to wear and tear over time.
So when do they start to “go bad”? And what can you do to maximize the lifespan of your hydraulic wrench?
How Long Do Torque Wrenches Last?
With proper care and maintenance, a quality torque wrench should provide years of reliable service. Most manufacturers rate the lifespan of a torque wrench in cycles – one cycle being a full tighten and loosen motion. Typically, a torque wrench is rated for 5,000 to 10,000 cycles before recalibration is required.
However, torque wrenches are precision instruments, and their performance can start to drift over time. Small changes due to wear, contaminants, or even drops can affect accuracy. For critical applications, annual calibration checks are recommended.
Signs Your Torque Wrench May Need Service
Some signs that your torque wrench may be drifting out of spec and due for service include:
- Inability to hold on higher torque settings
- Wrench slipping or not able to achieve desired torque
- Difficulty in maintaining proper zero position
- Excess looseness, sloppiness, or “play” in click mechanism
- Jamming or stiffness in ratchet head
- Visible damage like cracks or bent parts
If you notice any of these issues, it’s time to have your torque wrench calibrated and serviced by a qualified technician. Continuing to use an out-of-calibration wrench can lead to inconsistent or unsafe bolted joints.
Maximize Torque Wrench Lifespan
Here are some tips to keep your torque wrench in top working condition for as long as possible:
Proper Storage
Always store torque wrenches in a clean, dry environment. Never leave a torque wrench on the floor where it can collect dirt or be damaged. The storage case prevents damage and keeps the tool calibrated.
Avoid Overloading
Never exceed the rated capacity of your torque wrench. Overloading can permanently damage the internal spring mechanism, so know your wrench’s torque range and stay within it.
Limit Exposure
Avoid exposing torque wrenches to excessive moisture, chemicals, impacts, or other environmental factors whenever possible. For example, wiping down a torque wrench with solvents can degrade seals.
Regular Inspection
Periodically inspect your torque wrench for any signs of wear, bending, cracking, or malfunction. Address any issues promptly to avoid further damage.
Proper Handling
Depending on the model & style wrench you are operating with, hand placement is critical for proper and accurate torque to be applied. Moving hand placement will change the leverage point of the wrench and therefore the torque output.
Frequent Calibration
Have your torque wrench calibrated at least annually, or after 5,000 cycles. Frequent calibration ensures accuracy and rectifies any deviations before they become severe.
The Importance of Torque Wrench Training
Another critical aspect in maximizing the lifespan of torque wrenches is proper training for users. Even the highest quality wrench won’t last long if operators are not properly versed in correct usage and handling techniques. Key training topics should include:
- Reading & setting torque values
- Proper wrench positioning/alignment on fasteners
- Use of grip accessories like crowfoot adapters
- Using tightening tools and loosening techniques
- Drop/impact prevention
- Storage procedures
- Inspection and basic maintenance
- Recognizing signs of damage/wear
Having well-trained users that understand the proper operation and care of torque wrenches is just as important as having a quality tool in the first place. Operators should demonstrate proficiency before being handed a torque wrench.
Refresher training, at least annually, is also a good idea. Proper technique can deteriorate over time, leading to unintentional misuse or abuse. Regular, hands-on training reinforces good habits.
Shop ALLTORC’s Hydraulic Torque Wrenches
Like any precision instrument, torque wrenches require proper care and servicing to maximize lifespan. But with regular calibration, inspections, and preventative maintenance, a quality torque wrench should provide many years of accurate, reliable service.
For applications requiring very high torque capacity and durability, ALLTORC’s hydraulic torque wrenches offer superior performance and lifespan compared to click-type wrenches.
With proper maintenance, ALLTORC’s hydraulic torque wrenches will deliver decades of reliable service, even in the toughest industrial environments.
We also offer full servicing and calibration to keep tools performing like new. For the ultimate in high-capacity, long-lasting performance, ALLTORC’s hydraulic torque wrenches are the leader in the industry. Discover more about extending the life of your torque tools by contacting us today.