Hydraulic Jack Calibrations
Accurate, NIST-traceable calibration of hydraulic jacks, cylinders, pumps and gauges for safe, precise lifting and testing.
CALL US NOW! 866-522-5464
WHAT IS HYDRAULIC JACK CALIBRATION?
Hydraulic jack calibration confirms the relationship between the pressure shown on your gauge and the force your jack actually delivers. Seal friction, wear and gauge drift mean that pressure multiplied by ram area is never exact, so each jack and gauge is tested together in a calibration frame against a certified reference. The result is a pressure-to-load chart and certificate traceable to NIST, ensuring lifting forces are applied evenly, overloading is avoided and test loads can be trusted.
HYDRAULIC JACK CALIBRATIONS
Jack & Gauge Calibration
HYDRAULIC JACK CALIBRATIONS
Cylinder Pressure Testing
HYDRAULIC JACK CALIBRATIONS
Pump & Gauge Checks
HYDRAULIC JACK CALIBRATIONS
NIST Certificates
RENTALS
WB Equipment has provided jack & cylinder rentals for over 30 years,
We offer both short- and long-term rental options. Our extensive rental fleet includes high-quality hydraulic jacks, cylinders, torque and tension tools, lifting systems, and other specialized equipment. Serving industries such as construction, infrastructure, and energy,
SALES
WB Equipment provides hydraulic equipment rentals for the whole of the USA.
WB Equipment Rentals provides reliable, high-quality machinery for construction, industrial, and commercial projects. Their inventory includes hydraulic tools, lifting equipment, and power solutions designed for efficiency and safety.
SERVICE
WB Equipment has provided hydraulic jack & cylinder sevicing for over 30 years,
WB Equipment Servicing ensures machinery reliability through preventative maintenance, expert repairs, and safety checks. It minimizes downtime, extends equipment lifespan, and supports efficient, safe operations across industrial and construction environments.
Hydraulic Jack Calibrations
"Power Under Pressure:
Hydraulic Jack Calibrations from WB Equipment Corp."
Even Load Distribution:
Calibrated jacks apply lifting forces evenly to avoid structural damage.
Prevents Overloading:
Know exactly what force is applied and avoid mechanical failure.
Compliance:
Meet industry standards, DOT specifications and safety regulations.
Longer Equipment Life:
Inspection during calibration catches leaks and wear early. [1]
OTHER PRODUCTS AVAILABLE FOR RENTAL
~ WITH HYDRAULIC JACK CALIBRATIONS ~
PEJ1401B, Two Speed, Electric Hydraulic Pump, 4/3 Manual Valve,115V, Use with Double-Acting Cylinders
Product code: PEJ1401B
Max pressure: 10,000 psi
Power source: Electric
Action type: Double-acting
Capacity: 1.5 gal
Motor voltage: 115 V
HA7206B, 6ft., Thermo-plastic High Pressure Hydraulic Hose, .25 in. Internal Diameter
Product code: HA7206B
Oil capacity: 3.54 in³
Maximum pressure: 10,000 psi
Accuracy: 1% of full scale
Thread: 1/4 NPTF in
Gauge adaptor: GA3
GF813P, Hydraulic Force and Pressure Gauge, Imperial Scale, for use with 20, 30, and 60 ton Cylinders
Product code: GF813P
Tonnage range: 20, 30 & 60 ton
Face diameter: 4 in
Accuracy: 1% of full scale
Thread: 1/4 NPTF in
Gauge adaptor: GA3
Enerpac P39 Single Speed ULTIMA Steel Hydraulic Hand Pump, 41 in³ Usable Oil, 10,000 psi
RENT NOW!Product code: P39
Max pressure: 10,000 psi
Max flow rate: 0.15 in³/stroke
Fluid capacity: 41 in³
Action type: Single-acting
Power type: Manual hand
WB Equipment Product & Services Catalog
Select Your Requirements from Popular Categories
Popular Categories
Enerpac & Simplex - Hydraulic Cylinders
Enerpac Cylinders
Low-Height Cylinders
Low-profile cylinders designed for low clearance applications
Capacity: 5 – 1,000 tons
Stroke: 0.24 – 2.44 in
Collapsed Height: 1.08 – 7.56 in
Enerpac Cylinders
Lock Nut Cylinders
Mechanically locking cylinders for safely holding a load
Capacity: 20 – 1,000 tons
Stroke: 1.77 – 11.81 in
Collapsed Height: 4.94 – 28.90 in
Enerpac Cylinders
High Tonnage Cylinders
Cylinders with the highest quality construction for enhanced durability
Capacity: 50 – 1,000 tons
Stroke: 1.97 – 11.81 in
Collapsed Height: 5.91 – 28.90 in
Enerpac Cylinders
Double-Acting Cylinders
Precise control and speed: the plunger advances and retracts hydraulically
Capacity: 4 – 1,000 tons
Stroke: 1.13 – 48 in
Collapsed Height: 7.19 – 64.75 in
Simplex Cylinders
Lock Nut Cylinders
Lock nut cylinders for extended, mechanically locked load holding
Capacity: 34 – 575 tons
Stroke: 1.77 – 11.81 in
Simplex Cylinders
High Tonnage Cylinders
Heavy-duty single- and double-acting cylinders, with lock nut options
Capacity: Up to the 1,000-ton class
Stroke: 1.77 – 11.81 in
Simplex Cylinders
Center-Hole Cylinders
Single- and double-acting cylinders with a center tube for pulling and tensioning with a rod or cable
Capacity: 12 – 646 tons
Stroke: 0.31 – 10.12 in
Simplex Cylinders
Low Height Cylinders
Compact, low height cylinders for tight spaces
Capacity: 10 – 150 tons
Stroke: 0.44 – 2.44 in
Enerpac Cylinders
Hollow Plunger Cylinders
Hollow bore cylinders for pulling and tensioning with a bar or cable
Capacity: 12 – 660 tons
Stroke: 0.31 – 10.13 in
Center Hole Diameter: 0.68 – 5.31 in
Enerpac Cylinders
Lightweight Cylinders
Durable aluminum cylinders for applications where weight is a factor
Capacity: 10 – 150 tons
Stroke: 1.97 – 9.84 in
Collapsed Height: 6.06 – 20.59 in
Enerpac Cylinders
Pull Cylinders
Cylinders designed for pulling objects together or apart
Capacity: 2.5 – 60 tons
Stroke: 5.00 – 6.02 in
Collapsed Height: 10.44 – 43.71 in
Enerpac Cylinders
Telescopic Cylinders
Multi-stage cylinders designed for extended lift heights
Capacity: 5 – 75 tons
Stroke: 0.67 – 23.62 in
Collapsed Height: 1.77 – 18.74 in
Simplex Cylinders
General Purpose Cylinders
General purpose cylinders built to ANSI/ASME B30.1, rated 10,000 psi
Capacity: 5 – 150 tons
Stroke: 0.62 – 24 in
Simplex Cylinders
Aluminum Cylinders
Lightweight aluminum cylinders, including spring return, lock nut and center hole models
Capacity: 30 – 150 tons
Stroke: 2 – 10 in
Simplex Cylinders
Pull Cylinders
Single- and double-acting pull cylinders
Capacity: 2 – 100 tons
Stroke: 5 – 6 in
Simplex Cylinders
Cylinder Tonnages
The full Simplex cylinder range, sorted by tonnage
Capacity Class: 2 – 1,000 tons
Max Pressure: 10,000 psi
Enerpac Cylinders
Production Cylinders
High cycle cylinders compatible with mounting attachments to simplify fixturing
Capacity: 4 – 25 tons
Stroke: 1.13 – 10.25 in
Collapsed Height: 7.31 – 20.69 in
Enerpac Cylinders
Long Stroke Cylinders
12 to 48 in stroke cylinders designed for extended lift heights
Capacity: 10 – 1,000 tons
Stroke: 12 – 48 in
Collapsed Height: 12.48 – 64.75 in
Enerpac Cylinders
Climbing Jacks
Designed for incremental lifting and lowering with cribbing
Capacity: 55 – 220 tons
Stroke: 5.91 – 6.34 in
Enerpac Cylinders
Single-Acting Cylinders
Simple operation: the plunger advances hydraulically in one direction
Capacity: 2.5 – 1,000 tons
Stroke: 0.24 – 23.62 in
Collapsed Height: 1.08 – 43.71 in
Enerpac Cylinders
General Purpose Cylinders
Versatile steel cylinders designed for a wide range of applications
Capacity: 5 – 500 tons
Stroke: 0.63 – 48.00 in
Collapsed Height: 1.63 – 64.75 in
Enerpac Cylinders
Cylinder Tonnage
Enerpac cylinders categorized by tonnage
Capacity: 2.5 – 1,000 tons
Stroke: 0.24 – 48.00 in
Collapsed Height: 1.08 – 64.75 in
Custom Cylinders
Center-Hole Cylinders
Center-hole cylinders designed and built by WB Equipment to your required capacity, stroke and hole size. Call our engineers to discuss your application.
VIEW PRODUCTSEnerpac Cylinders
Strand Jacks
Computer-controlled strand jacks for lifting and lowering very heavy loads
Capacity: 17 – 1,405 tons
Stroke: 9.8 – 23.6 in
Max Pressure: 5,000 psi
HYDRAULIC JACK CALIBRATION SPECIFICATIONS
📘 What Is Hydraulic Jack Calibration?
Calibration loads a jack in steps against a certified reference load cell while the jack gauge pressure is recorded at each step.
The readings produce a calibration chart or equation that converts gauge pressure into actual force for that specific jack and gauge.
The process is documented with a certificate showing traceability to NIST, the reference standards used and the calibration date.
⭐ Key Features & Benefits of Hydraulic Jack Calibration
Our jack calibration service includes:
Inspection and setup
Visual check of jacks, hoses and fittings for wear and leaks.
Zero verification
Baseline readings under no-load conditions.
Incremental loading
Readings recorded at load steps across the jack range.
Reference comparison
Results compared against certified standards.
Final verification
System checked at full operating pressure.
Documentation
Calibration report and certificate for your records.
🔧 Equipment Used for Hydraulic Jack Calibration
Jack calibration uses:
• Calibrated reference load cells
• Heavy-duty calibration test frames
• Master pressure gauges and transducers
• Calibrated hydraulic pumps
• Data acquisition systems
• Dial indicators and displacement sensors
• Torque transducers for bolting tools
🏗️ When Hydraulic Jack Calibration Is Needed
Calibration is commonly needed for:
• Pile load tests and tieback tests
• Bridge jacking and bearing replacement
• Post-tensioning and stressing jacks
• Building lifting and leveling
• Structure and equipment weighing
• Skidmore testers and torque wrenches used with jacking equipment
• Annual quality and DOT requirements
📈 Advantages of Calibrated Hydraulic Jacks
Calibrated equipment delivers:
Known forces
Accurate loads for lifting and testing.
Safer lifts
Reduced risk of overloading structures or equipment.
Synchronized lifts
Matched jacks for even multi-point lifting.
Accepted results
Certificates that satisfy engineers and inspectors.
Reliability
Equipment problems found before they reach the jobsite.
⚠️ Limitations to Plan For
For accurate calibration, plan for:
• Sending each jack with the gauge used on site
• Calibrating after repairs, resealing or overload
• Following the calibration interval in your specification
• Cleaning equipment and checking for leaks first
• Calibrating across the full range you will use
• Keeping certificates with the equipment
• Labeling jacks and gauges as matched sets
💡 Why Choose WB Equipment?
One supplier
Calibration, repairs, rentals and sales from one source.
Experienced technicians
Specialists in heavy jacking equipment.
Calibrated rentals
Rental jacks supplied with current certificates.
National service
Equipment shipped to and from anywhere in the USA.
🏭 Industries That Use Hydraulic Jack Calibration
• Pile testing and geotechnical firms
• Bridge and highway contractors
• Post-tensioning contractors
• Heavy lifting and rigging companies
• Industrial plants and maintenance crews
• Departments of transportation
• Testing laboratories
🧭 How to Choose a Hydraulic Jack Calibration Service
Look for:
• Traceability to NIST with full documentation
• Capacity range to match your jacks
• Calibration of jack and gauge as a matched set
• Fast turnaround and reliable shipping
• In-house repair if problems are found
• Certificates accepted by your client or DOT
WB Equipment can calibrate your hydraulic jacks quickly. Call 866-522-5464.
📋 What We Need From You
To quote or recommend equipment, please send:
• Jack make, model and capacity
• Gauge or readout used with each jack
• Number of jacks to calibrate
• Load range you will use on site
• Required certificate format
• Date you need equipment returned
• Return shipping address
Why Calibrate Hydraulic Jacks?
A hydraulic jack's real output changes over time as seals wear and gauges drift, so the pressure on the gauge may no longer match the force on the load. Calibration measures that difference and records it in a pressure-to-load chart, so crews apply the force the engineer specified.
WB Equipment calibrates jacks, cylinders, pumps and gauges of all common makes, with results traceable to NIST. Most specifications call for calibration at least once a year, after repairs, or whenever a jack and gauge are paired differently.
When Is Jack Calibration Required?
Calibration matters on any job where the load must be known, not just applied. Common examples:
● Load and acceptance tests: piles, anchors, tiebacks and rebar pullout tests.
● Post-tensioning and stressing: confirming tendon forces in slabs, beams and bridges.
● Bridge and building lifts: keeping loads balanced between jacks.
● Press and test frames: verifying force in production and laboratory equipment.
● After repairs: confirming a resealed jack performs as it should.
Every calibration comes with a certificate, ready to hand to the engineer or inspector.
Your Questions Answered - Hydraulic Jack Calibrations
Why do hydraulic jacks need calibration?
Friction, wear and gauge drift mean gauge pressure does not exactly equal the force applied. Calibration gives the true load for each reading.
How is a hydraulic jack calibrated?
The jack is loaded in a test frame against a reference load cell, and gauge readings are recorded at several load steps to produce a calibration chart.
What is a calibration chart?
A table or equation that converts the gauge pressure reading into actual force for that particular jack and gauge.
How often should jacks be calibrated?
Typically every 12 months, and after repair, resealing, overload or damage, or as your specification requires.
Should the gauge be calibrated with the jack?
Yes. Calibrating the jack and gauge together as a matched set gives the most accurate result.
What does NIST traceable mean?
The calibration links through documented reference standards back to the National Institute of Standards and Technology.
What jack sizes can you calibrate?
WB Equipment calibrates jacks and cylinders up to 1,500 tons in house.
Do you calibrate Skidmore testers and torque wrenches?
Yes. We also calibrate Skidmore-Wilhelm bolt testers and hydraulic and manual torque wrenches.
What if my jack fails calibration?
We can repair, reseal and recalibrate it, or supply a rental while it is serviced.
How long does it take?
Turnaround is fast. Let us know your deadline when you book.
Do you calibrate other brands?
Yes. We calibrate most makes of hydraulic jacks, cylinders and gauges.
Will I get a certificate?
Yes. Every calibration includes a certificate with readings, standards used and traceability.
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