Smooth 5.3 P

Smooth 5.3P Details

2.5 HP Continuous Duty Motor

Continuous duty horsepower ratings are the amount of power a motor will produce "continuously" at a given RPM (revolutions per minute). Continuous duty HP is the "working power" of a treadmill motor, providing constant power to the drive belt. Our motors are built for endurance and reliability and are backed with an industry leading 10 year warranty.

Pulse Width Modulation (PWM Circuit Board)

PWM is a new electronics technology that will soon be found on most premium treadmills. PWM control boards came out in treadmill applications in the mid-90's. This new technology provides the following advantages:


Because the DC voltage is much more "pure," PWM circuit boards do not require a choke and capacitor to filter out electrical "hum." With the electrical "hum" practically eliminated, the treadmill is dramatically more quiet than a treadmill with a SCR board. PURE VOLTAGE, MORE POWER

Both PWM and SCR control boards take AC power (alternating current) and "rectify" it into DC (direct current) voltage. AC voltage is a constant change of positive/negative current 60 times a second. That's where we get the term "60 cycle." In other words, the current is "chopped" 60 times per second. PWM (Pulse Width Modulation) boards will "chop" it 1200 times per second, or 20 times faster with pure DC voltage. Because of the "pure" DC voltage, the motor is "seeing" stronger current. The result is higher "pure" voltage with less amp draw.


PWM allows much more tolerance to heavy weight users due to a lower amp draw. Amp draw is what throws a breaker in your home when too much energy is demanded.


PWM circuit boards are expensive to produce. But the real savings comes from NOT purchasing a choke and capacitor, as well as a larger flywheel.


Since the motor is receiving and outputting more pure energy, it does not have to rely on a large flywheel to keep the treadbelt moving. Smaller flywheels can be utilized.


Smooth Fitness Uni-Weld frame is used by many of the top treadmill manufacturers, including Life Fitness, Precor, and Trotter, and of course, Smooth FITNESS.


In a bolted frame, the size/diameter of the holes that need to be drilled on the frame are always larger than the diameter of the bolt. This leaves room for movement, especially over a long period of treadmill usage, and leads to frame fatigue and failure.


Steel is a typically less expensive than the extruded aluminum used in some competitor frames. Aluminum is more expensive, and costs more to weld. It is very rare for either a steel or aluminum frame to fail, and most manufacturer's have never replaced a frame under warranty.


Elevation mechanisms come in many different forms. The most effective and durable elevation assemblies are worm-gear driven electronic elevation motors.

Worm-gear electronic elevation systems use a separate, powerful motor to elevate the treadmill while in use. Typical elevation motors will have a thrust value from 400 to 1000 pounds, therefore lifting the deck without any hesitation while exercising.


22" OR 26" tube length with solid shaft running throughout length. High quality KOYO press sealed bearings in each end. Black oxide finished, 1.9 Carbon steel wall construction. The longer length on the tube places LESS stress on the bearing, extending the life.


2-Ply, 100% Polyester low friction sole backing with Black PVC non-slip beam top. Black PVC (poly vinyl chloride) is the industry standard for all treadmill belts. High wear and tensile strength help keep this belt a top performer for several years. The 100% Polyester backing is "whisper weaved" for very low friction, and thus a very quiet belt in use.

The 20-degree seamless diagonally fused belt is incorporated to help reduce noise. A belt with a perpendicular or straight across splice causes excessive noise when the belt crosses over the rollers on each end, creating a "thumping" noise.

This is the highest quality 2 ply belt in the industry. Manufactured in Spain, our high standards have been incorporated into this high quality tread belt.

The belt is pre-lubricated with silicon and will not need additional lubricating at delivery.


1" Thick, high-compression pressboard made out of particulate and fibered Douglas Fir wood. The laminate black top, also known as a phenolic deck coating, is a micro-screen, lubricate trapping laminate. Phenolic decks have a micro-screen that acts as a net for the silicon lubricant, thus making the silicon "catch" within the "micro-valleys" that are created by the micro-screen.

CLEANING - Cleaning the top layer can be done by using a light cleaner, such as glass cleaner. DO NOT USE any chloride based cleaners such as bleach. CLEANING the underside of the belt should be done by loosening the rear roller and wiping the deck and the back of the belt (the polyester side) with a clean towel ONLY, WITH NO CLEANERS. After cleaning, re-apply new silicon to the deck and adjust.

Optical Speed Sensor

An Optical Speed Sensor is used in combination with the PWM motor controller to produce the smoothest speed changes. The optical eye actually counts the revolutions of the motor directly at the axle. The PWM motor controller then averages the input count from the optical eye to produce a consistent speed regardless of load.

Smooth treadmills carry a 30 day money-back Guarantee,
See our Satisfaction Guarantee for details.

SMOOTH® is a registered trademark of The Fitness Store, Inc.

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