BELT TENSION CHECKER TENSIONING V-BELT DRIVES WITH A BROWNING TENSION CHECKER General rules of tensioning. 1. Ideal tension is the lowest tension at which the Used belts should be maintained at the minimum value as indicated in the chart. "Used Belt" tensions should be used for the 8 hour and subsequent checks. IF THE BELT SPAN WAS MEASURED

precise tension values, Carlisle recommends that the “Formula Method” of tensioning described in the Engineering. Guide for Industrial V-Belt Drives be used 

V-BELTS. Since John Gates invented the world’s first rubber V-belt in 1917, Gates continues to drive enhancements in the design of power transmission systems for industrial applications. Today, we uphold John Gates’ legacy of innovation, performance, and power by engineering Gates V-belts with the most advanced materials and technologies

Most v-belt problems are due to improper tensioning. Several tools and methods The V-Belt Drive Troubleshooting Guide presented on the following pages.

6. V-belts permit a wide range of driven speeds, using standard electric motors. 7. V-belts dampen vibration between driving and driven machines. 8. V-belts are quiet. 9. V-belts act as a “safety fuse” in the powertrain. 10. V-belts and sheaves wear gradually

This tensioning method relies on a Pencil Gauge Tool and the mathematical standards laid out in this V-belt tensioning table. Measure the span length "K" of your drive (See Figure 1). Slide the large O-ring to the recommended deflection distance on the scale and slide the small O-ring up against the barrel of the gauge as shown in Figure 2.

1. Ideal tension is the lowest tension at which the belt will not slip under peak load conditions. 2. Check tension frequently during the first 24 hours of operation. Check after jog start or 1-3 minutes of operation, at 8 hours, 24 hours, 100 hours and periodically thereafter are recommended. 3. Over tensioning shortens belt and bearing life. 4.

MPTA-B7i-2007R Calculation of V-Belt Tensions And Shaft Loads Mechanical Power Transmission Association 5672 Strand Court, Suite 2, Naples, FL 34110 www.mpta.org Page 5

Figure # 1: Belt Static Tension 3.1 Recommended Method For Calculating And Measuring Belt Static Tension Based on Drive Parameters V-belt drives can operate satisfactorily over a wide range of tensions. The ideal tension is the lowest tension at which the belts will not slip excessively at the highest load condition.

V-Belt. INSTALLATION GUIDE. Tensioning Methods. When you install belts at optimal tension, you save time and money. To illustrate this point, this table 

Aim the sensor as close to the center of a selected belt span as possible in order to get the most accurate tension reading. The best practice 

Proper belt tension ensures optimum performance of a vehicle's accessory belt drive system. Select from the dropdown options below to find the appropriate belt tension for your belt.

Challenge 'V' and Wedge belts are manufactured to ensure precise length and to stay The tensioning forces in the table above are representative for a 

11/2 · V-Belt Tension Ranges for Manual Tensioners Always use a belt tension gauge that indicates static tension, such as the Gates Krikit® Tension Gauge, to determine proper tension from the Installation Chart. Tension ranges below are for drives requiring single belts. If multiple belts are needed for a drive, divide tension by number of belts to give per belt

required to deflect the belt should compare with the deflection forces noted in the chart below. Also notice for V-belts that deflection forces vary from 

Adjustable for 10" to 170" belt span and up to 35 pounds of tension. Proper tensioning is recommended to avoid premature V-belt wear.

V-belt tensioning For the initial installation of optibelt RED POWER 3 V-belts, the same methods are used as for standard Optibelt V-belts. The tension values are to be calculated on the same basis or to be taken from the table on page 147. Once correctly tensioned optibelt RED POWER 3 V-belts need no re-tensioning. Application areas

Tensioning belts on a drive is an easy procedure. V-belt and Timing belt tensioning method (force, deflection, belt deflection diagram 

3. Over tensioning shortens belt and bearing life. 4. Keep belts free of foreign material which may cause slip. 5. Make V-drive inspection on a periodic basis. Un-der-tensioned belt drives often produce audible squeal noise. Tension when slipping. Never apply 1.

chart below. Also notice for V-belts the deflection forces vary from the initial “run-in” values which are greater Belt Tensioning Instructions Span Length t Deflection 1/64” per inch of span

v-be1t cross section v-belt tensioning recommended deflection forte lbs. small sheave initial diameter range (inches) retensioning maximum minimum 12.1 12.0 15.6 18.0 22.1 12.0 - 13.0 - 15.5 22.0 - 22.0 - 12.0 3.35 4.50 10.6 - 10.3 118 - 16.0 - 16.0 20.0 24.4 475 10.9 18.0 19.5 25.5' 30.0' 32.0' 45.0' 52.5' 20.0 21.0 165 19.5 21.0 39.0' 45.0'