PIX-X'set Narrow Wedge V-Belt — Section SPB (SPB-2500 / 16.3×13mm) is an authentic PIX industrial component (Model/MPN: SPB-2500) engineered for continuous factory operations and machinery maintenance in Kenya and across East Africa. Key verified ratings include Manufacturer: PIX Transmissions Ltd, Product Line: PIX-X'set® Narrow Wedge V-Belts, Belt Section Profile: Section SPB (Heavy Narrow Wedge). Standard plant applications include Commercial HVAC air handling units (AHUs) and rooftop centrifugal blowers, Industrial cooling tower fan drives and induced-draft heat exchanger fans, High-pressure centrifugal multi-stage water booster pumps. Supplied through our STARNEX Nairobi sourcing desk with prompt lead times across Kenya and East Africa. When requesting a quotation, please specify required quantity, operating voltage/phase, pipe connection size, and delivery destination.
PIX-X'set Narrow Wedge V-Belt — Section SPB (SPB-2500 / 16.3×13mm)
PIX-X'set Narrow Wedge V-Belt — Section SPB (SPB-2500 / 16.3×13mm) is an authentic PIX industrial component (Model/MPN: SPB-2500) engineered for continuous factory operations and machinery maintenance in Kenya and across East Africa. Key verified ratings include Manufacturer: PIX Transmissions Ltd, Product Line: PIX-X'set® Narrow Wedge V-Belts, Belt Section Profile: Section SPB (Heavy Narrow Wedge). Standard plant applications include Commercial HVAC air handling units (AHUs) and rooftop centrifugal blowers, Industrial cooling tower fan drives and induced-draft heat exchanger fans, High-pressure centrifugal multi-stage water booster pumps. Supplied through our STARNEX Nairobi sourcing desk with prompt lead times across Kenya and East Africa. When requesting a quotation, please specify required quantity, operating voltage/phase, pipe connection size, and delivery destination.
Functional engineering application
The PIX-X'set Section SPB (SPB-2500) Narrow Wedge V-Belt is engineered for high-power industrial machinery where drive space is constrained but torque requirements are massive. Manufactured by PIX Transmissions Ltd, the SPB series delivers higher horsepower ratings than classical B-section belts, enabling smaller center distances, fewer belt strands, and narrower pulley sheaves. With a heavy-duty trapezoidal wedge profile measuring 16.3 mm in top width and 13 mm in thickness, the SPB geometry provides exceptional wedging grip inside deep V-grooves. Its load-bearing core consists of high-modulus, pre-stretched polyester tensile cords supported by a fiber-loaded cushion rubber matrix. This prevents cord displacement under heavy cyclic shock loads, ensuring extended belt life on 30 kW to 90 kW industrial electric motors. The tough outer jacket is fabricated from bias-cut cotton-polyester textile impregnated with heat- and oil-resistant polychloroprene rubber. The jacket protects against abrasive industrial particulates, moisture, and chemical vapors while complying with ISO 1813 antistatic conductivity specifications. With a standardized datum pitch length (Ld / Lp) of 2500 mm, an inside length of ~2440 mm, and a maximum rated linear speed of 42 m/s, the SPB-2500 operates on pulleys with pitch diameters of 140 mm and above. Supplied in matched sets by STARNEX Industrial Spares to ensure equal load sharing across all pulley grooves.
Heavy-duty narrow wedge V-belt Section SPB engineered for large industrial fans, cooling towers, and high-pressure pumping stations across Kenya.
Quotation & fulfilment
Parametric technical attributes
| PIX SPB-2500 | |
| IDENTIFICATION | |
| Component Type | PIX-X'set Narrow Wedge V-Belt — Section SPB (SPB-2500 / 16.3×13mm) |
| Manufacturer / Brand | PIX |
| Part Number (MPN) | SPB-2500 |
| Stock Keeping Unit (SKU) | PIX-WBLT-SPB2500 |
| TECHNICAL PARAMETERS | |
| Manufacturer | PIX Transmissions Ltd |
| Product Line | PIX-X'set® Narrow Wedge V-Belts |
| Belt Section Profile | Section SPB (Heavy Narrow Wedge) |
| Top Width (W) | 16.3 mm (21/32 in) |
| Height / Thickness (T) | 13.0 mm (33/64 in) |
| Included Angle | 40° (Deep Wedge Geometry) |
| Datum / Pitch Length (Ld / Lp) | 2500 mm (98.4 in) |
| Inside Length (Li) | ~2440 mm (Lp - 60mm) |
| Outside Length (La) | 2528 mm (Lp + 28mm) |
| Base Elastomer Compound | Transverse-Fibre Reinforced Polychloroprene |
| Outer Envelope Fabric | Rubber-Treated Heavy Industrial Textile Wrap |
| Min. Recommended Pulley Dia. | 140 mm Pitch Diameter |
| Max Linear Belt Speed | Up to 42 m/s |
| CONSTRUCTION & CONNECTION | |
| Tensile Cord Material | High-Modulus Low-Stretch Polyester Tensile Core |
| COMPLIANCE & STANDARDS | |
| Antistatic Compliance | ISO 1813 Certified (< 10^6 Ω) |
| Manufacturing Standards | DIN 7753 Part 1, ISO 4184, BS 3790 |
| PERFORMANCE & RATINGS | |
| Temperature Range | -18 °C to +80 °C (-0 °F to +176 °F) |
| COMPLIANCE & LOGISTICS | |
| Stock Availability | On request |
System fitment & verified replacements
Interchangeable models
Commonly installed on equipment from
Common questions on this part
An SPB narrow wedge belt can transmit up to 2.5 times the power of a standard Section B belt over the same sheave diameter. This allows a drive that previously required five B-section belts to operate reliably with just three SPB belts, reducing pulley weight and overhung shaft load.
SPB-2500 is the European metric narrow wedge standard (16.3×13mm, Lp 2500mm), whereas 5V-1000 is the American RMA narrow wedge standard (15.9×15mm, 100 inches outside length). While close in size, they use slightly different groove profiles and should not be interchanged on the same pulley.
The minimum recommended pulley pitch diameter for Section SPB is 140 mm. Using pulleys below 140 mm increases bending stress and dramatically reduces belt fatigue life.
Measure the span length between pulley centers and apply a deflection force using a PIX tension gauge at the center of the span. For an SPB belt, the required deflection force is typically 3.5 to 5.0 kg per belt depending on belt speed and motor rating.
Yes. STARNEX supplies matched cast iron taper-lock pulleys in 2-groove, 3-groove, 4-groove, and 5-groove configurations with taper bushes to match your motor shaft diameter.
