Home » Products » Universal Balancing Machine » Horizontal Balancing Machine » 9K717

9K717

Soft-bearing balancer for medium-weight rotors up to 1000 kg

Get offer
1000

Maximal weight, kg

2000

Maximal diameter, mm

2400

Maximum length, mm

Get offer

Perfect for rotors that require high manufacturing quality

The machine has high accuracy (0,4 gmm \ kg). Accuracy is achieved due to the special design of the spindle and the rig of the machine, as well as a reliable balancing system, PAK-1, which has a high degree of noise immunity. Ease of control allows you to quickly learn how to work on the machine and get to work as soon as possible. When designing the machine, high demands were placed on the functionality and versatility of each node, this made it possible to install absolutely any driveshaft on the machine with a minimum of time.

Characteristic features of soft bearing  balancing machines:

  • Self-aligning rollers.
  • Frequency-controlled asynchronous electric drive.
  • The presence of jacks for smooth and shock-free installation of the rotor.
  • The possibility of using the machine without installation on a special foundation.
  • 2 end stops included.

  • HIGH BALANCING ACCURACY 0,4 GMM/KG
  • REAL TIME DISPLAYED IMBALANCE MEASURING
  • SOFT-BEARING SYSTEM ENSURING LINEAR SENSITIVITY AND HIGH PRECISION ACROSS ALL SPEEDS
  • SELF-ALIGNING ROLLER BLOCKS AUTOMATICALLY ADJUST TO THE ROTOR ON TWO AXES
  • CYLINDRICAL ROLLERS HAVE A WIDE CONTACT AREA TO PREVENT ROTOR SURFACE DAMAGE
  • LONG STROKE BELT DRIVE
  • INFINITELY VARIABLE SPEED CONTROL OF THE ROTOR IS PROVIDED BY THE FREQUENCY INVERTER DRIVE
  • OWN ADVANCED MEASURING SYSTEM
  • SELF-DIAGNOSTICS FUNCTION
  • ENGLISH INTERFACE
  • CUSTOMISED PRINT OUT OF BALANCE DATA
  • DATA STORAGE TO INTERNAL FLASH MEMORY AND USB MEMORY STICK
  • 17-INCH TOUCH SCREEN MONITOR
  • OPERATION & SERVICE PERSONALIZED MANUALS
  • INTUITIVE SIMPLE OPERATIONING
  • HIGH PRODUCT RELIABILITY
  • SAFETY OPTIONS MODIFICATIONS
  • LOW-COST SPARE PARTS
  • OEM AND AFTERMARKET REPAIRS
  • 12 MONTHS WARRANTY
Self-Aligning Support Systems
  • Self-aligning roller cassette design – Roller cassettes automatically adjust to rotor positioning in two axes, reducing setup time and eliminating rotor surface damage from misalignment. The self-aligning feature minimizes operator skill requirements while ensuring optimal rotor-to-roller contact geometry.
  • Soft-bearing pendulum suspension system – Pendulum-mounted support structure provides exceptional measurement sensitivity with visual resonance detection capability and tactile residual vibration assessment. This soft-bearing design enables unmistakable identification of resonance frequency range and “feel-based” balance quality verification.
  • Wide cylindrical roller configuration – Roller width designed to support heavy rotors for extended periods without surface “knurling” effects on rotor bearing journals. The wide contact surface with radius chamfers distributes loads evenly to preserve rotor surface integrity.
Precision Measurement Integration
  • High balancing accuracy up to 0.4 g·mm/kg across the entire range of rotor masses. This makes them indispensable for balancing heavy parts that require low vibration levels.
  • Long-stroke pendulum suspension – Suspension design provides exceptional sensitivity for micro-vibration detection with operator “feel-based” assessment capability after balancing. The high-movement characteristic enables tactile verification of balance quality complementing electronic measurement.
  • Enhanced vibration isolation – Soft-bearing design provides superior isolation from external vibrations while maintaining sensitivity to rotor-generated unbalances. This isolation ensures accurate measurements in demanding industrial environments.
Mechanical Structure Design
  • Hardened roller surface treatment – Rollers manufactured with 52-56 HRC surface hardness ensuring extended service life while maintaining optimal contact characteristics. The hardness specification balances durability with rotor surface protection requirements.
  • Height-adjustable roller cassettes – Variable height mechanism accommodates rotor bearing journals from 15-270mm diameter while maintaining precise alignment and support characteristics. The adjustment range enables flexibility across diverse industrial rotor geometries.
  • Quick-change roller system – Specialized roller cassette design enables roller replacement within two minutes using additional roller sets of different sizes. The quick-change capability maximizes machine utilization by minimizing downtime during rotor changeovers.
  • Floor-mounted installation design – Self-contained structural design eliminates basement requirements and enables direct workshop floor installation with optional anchoring system. This foundation-independent approach reduces installation costs while providing flexibility for anchored or non-anchored configurations.
  • Modular design architecture – MODULAR DESIGN® system enables interchange of tooling and machine characteristics including diameter adjustments and cassette modifications. The modular approach maximizes machine adaptability across diverse rotor applications without equipment replacement.
  • Rotor handling jack system – Integrated jacks with soft material overlays enable safe rotor installation without impact damage to roller or rotor surfaces. The jack system eliminates installation-related surface damage that could compromise subsequent balancing accuracy.
  • Cantilever rotor balancing capability – Specialized bracket system enables balancing of rotors with center of gravity outside bearing pedestals. This capability accommodates specialized rotor configurations with unusual weight distribution characteristics.
Efficient Medium-Capacity Drive System
  • Medium-capacity frequency-controlled drive – 7.5kW electric motor with high power reserve reduces acceleration and deceleration times while ensuring adequate torque for diverse rotor configurations. Frequency inverter provides smooth speed regulation across 300-2800 rpm range with motor protection and stepless control capability.
  • Patented “LONG STROKE”® belt drive system – Advanced belt drive design with wide tension adjustment range utilizes only two belt sizes to accommodate all rotor requirements. The patented system enables rapid belt changes and precise tension adjustment critical for soft-bearing measurement accuracy.
  • Adjustable tension pulley mechanism – Variable tension system allows precise belt force adjustment to optimize soft-bearing measurement characteristics while preventing over-tensioning effects. The adjustment capability ensures optimal drive characteristics across diverse rotor weights and configurations.

The PAK-1 unbalance measuring unit represents the latest generation of measuring complexes for dynamic balancing, combining high precision, stability, and ease of use. It’s designed to tackle a wide range of rotor balancing tasks, from simple to the most complex, requiring precise measurements.

Based on an industrial fanless computer with a touchscreen and a multi-channel measuring unit, the system ensures reliability and a long service life, even under intensive use. The PAK-1 utilizes a universal measuring path and modern component base, allowing for equally high accuracy when working with all types of rotors.

Its intuitive interface, self-calibration capability, and automation of key operations make the complex a convenient tool for both experienced specialists and beginners.

Features of the PAK-1 System:
  • High-precision dynamic balancing for rotors of any configuration.
  • Industrial fanless PC with touchscreen and multi-channel measuring unit.
  • Setup using trial runs with calibration weights on production rotors.
  • Self-calibration by the operator, eliminating annual service adjustment costs.
  • Calculation of permissible unbalance values, even without technical documentation.
  • Determination of control weight mass to simplify setup for a specific rotor.
  • Real-time display of unbalance magnitude and angular position, including “highlighting” of the correction zone.
  • Automatic measurement start upon reaching a set speed and automatic stop after cycle completion.
  • Display of unbalance magnitude in grams, gmm, gcm, gmm/kg.
  • Vector and exponential averaging for working with moving elements and in noisy conditions.
  • Additional functions that significantly simplify the balancing process and expand the technological capabilities of the balancing machine.
  • Generation and printing of balancing reports directly from the system.
  • USB ports and Ethernet interfaces for connecting a printer, data storage, and integration into a local network.

Parameter

Value

Balancing rotors weight range, kg

10 – 1000

Maximum rotor diameter (over the bed), mm

2000

Distance between rotor bearing journal centers, mm, min/max

250 – 2400

Rotor bearin journals diameter, mm

15 – 270

Machine type

Soft-bearing

Support type

Rollers

Minimal achievable residual specific unbalance, gmm/kg

0.4

Rotor rotation speed range, rpm

300 – 2000

Drive type

Belt

Electric motor power, kW

7.5

Power supply parameters

400V ± 10%, 3 Ph, 50Hz ± 1

Balancing system

PAK-1

Overall machine dimensions (length x width x height), mm

4000 x 1600 x 1500

Machine weight, kg

1500

  • The operation manual on the machine with acceptance tests reports and the basic electric circuit – 1 pc.
  • The operation manual on balancing system – 1 pc.
  • Drive belt – 2 pc.
Custom extended machine base expanding the range of rotor balancing applications

Extended machine base

On request, the machine can be manufactured with an extended bed, expanding its range of applications. This modification makes it possible to balance rotors of non-standard lengths.
Powerful axial drive for balancing rotors with high aerodynamic resistance or no belt drive

Axial drive powerful

The axial drive enables balancing of rotors whose design does not allow the use of a belt drive or which have significant aerodynamic resistance. A rigid connection to the rotor…

Free support and training

Engineering

After sale service

Personnel training

Request Your Custom Equipment Offer Today

Take advantage of cost savings, unmatched service, and qualification enhancement
  • Enjoy a 100% Money Back Guarantee
  • Benefit from Discounted Shipping Costs
  • Receive Free Online Job Skills Training
Submit your request
and our manager will reach out to fine-tune your personalized solution for you
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply

Popular Questions


Your questions — our technical solutions

The 9K717 machine is designed for high-precision balancing of medium-weight, cantilever-type rotors. Thanks to its soft lever-type suspension and self-aligning rollers, it effectively handles:

  • Large armatures of electric motors and generators.
  • Impellers of industrial fans and turbines.
  • Centrifugal pump rotors
  • Heavy spindles and shafts of printing machines.

The lever-type suspension system allows for high sensitivity even when working with massive parts with complex support journal geometries.

The design of the 9K717 machine has been specially reinforced to handle loads ranging from 10 to 1,000 kg. The soft-bearing measurement principle allows for the balancing of such heavy assemblies at rotational speeds significantly lower than operating speeds, which enhances process safety and reduces the load on the drive while maintaining high measurement accuracy.

The standard bed configuration accommodates a wide range of standard rotors; however, for specific applications, VTM Group offers a version with an extended bed (over 2400 mm).

Since the 9K717 machine is often used for balancing long machine shafts and industrial drives, we can adapt the length of the guide rails to your individual requirements while maintaining perfect alignment of the support columns.

Despite handling rotors weighing up to one ton, the 9K717 machine achieves a minimum residual specific imbalance of 0.4 g·mm/kg. This enables customers to achieve accuracy class G0.4 in accordance with ISO 21940.

The lever suspension system enables high precision across a wide range of rotor masses.

Yes, the machine is set up for a new product type by the operator using trial runs with calibration weights.

This approach offers several key advantages for B2B production:

  • Maximum Sensitivity: Calibration allows adapting the measuring system to the specific geometry and mass of the rotor, minimizing error.

  • Accuracy Control: The operator can verify and confirm measurement accuracy at any time, eliminating the accumulation of errors during long-term operation.

  • Flexibility: The machine maintains reference-level accuracy even with non-standard or complex parts, as the system is tuned to the actual response of the specific rotor.

Other machines

  • 9A714
    Industrial belt-driven balancer for lightweight rotors up to 60 kg
  • 9D715
    Hard-bearing balancing machine for medium-weight rotors up to 100 kg
  • 9KW721
    Soft-bearing heavy industry balancer up to 25000 kg. Combined drive. Rotor jacks
  • 9D716
    Hard-bearing balancing machine for medium-weight rotors up to 500 kg