Conversion kit

Introduction
We offer conversion of V-belt transmissions to Hutchinson ribbed (Poly V) belt transmissions.

THE EFFICIENCY OF THE TRANSMISSION

• Higher power transmission through continuous, uniform cord construction.
• Increased contact surface compared with conventional V-belts.

EFFICIENCY DETAILS
Poly V belts typically achieve an operational efficiency around 98% under similar tension and geometry, reducing electrical consumption and potentially allowing smaller motor sizing.

THE COMPACTNESS OF THE TRANSMISSION

• Higher transmission ratios possible (example: ribbed belt 1:60 vs V-belt 1:20), which can eliminate staged pulleys.
• Smaller minimum pulley diameters for ribbed profiles compared with V-belt profiles.
• Reduced transmission weight: tensioners may be unnecessary.
• Narrower belt width for equivalent power transfer with matching geometry.

FLEXIBILITY & INSTALLATION
Poly V belts can operate in flexion and counter-flexion with the following benefits:

• A single belt may drive multiple accessories (serpentine installation).
• Accessories can be driven from the back of the belt.

EFFICIENCY (TENSION STABILITY)

• Stable tension: monobloc design avoids matching requirements and differential flapping seen with multiple V-belts.
• Belt aging does not result in significant loss of transmitted power.

COST REDUCTIONS

• Lower component dimensions: reduced pulley diameters and widths; potential elimination of tensioners when using Flexonic®.
• Lower transmission weight.
• Shorter belt lengths.
• Possible elimination of inertia flywheels in some applications.
• Simpler pulley machining: Poly V can be used on smooth pulleys (receivers).

MAINTENANCE

• Rapid setup: 1 PM Poly V can replace up to 25 SPB V-belts.
• No belt matching required.
• Extended service life compared with multiple V-belts.
• No re-tensioning or frequent verification required for elastic belt ranges.
• Flexonic® tension stabilises after a few minutes in dynamic operation and remains stable over belt lifetime.

TIME AND PRODUCTIVITY

• Simplified factory installation of Flexonic®: reduced assembly time and improved productivity.
• Suitable for fixed center distance installations with standard grooved pulleys.
• Automatic tensioning option available.

OPERATIONS

• Reduced energy costs due to higher transmission efficiency.
• Increased belt service life.

STORAGE

• Standardisation and rationalisation of spare part references.

Applications

• Piston compressor
• Tangential drive
• Brushing machine
• Centrifuge
• Ice cream machine
• Gas engine forklift truck
• Ski lift

Technical specifications

• Brand: Hutchinson
• Solution: Conversion from V-belt transmission to ribbed (Poly V) belt transmission
• Typical transmission efficiency (Poly V vs V-belt): ~98% yield for Poly V under similar tension and geometry
• Example transmission ratio improvement: ribbed belt 1:60 vs V-belt 1:20
• Installation benefit: 1 PM Poly V can replace up to 25 SPB V-belts
• Flexonic®: automatic tensioning option; tension stabilises after a few minutes in dynamic mode