Gates Mectrol produces a full line of high strength, low stretch flat belts for use in lifting and positioning applications.

These flat belts are normally sold in open ended lengths and are clamped on each end.

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 Flat Belt Specifications

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 Pulley Design Recommendations

 Gates Mectrol Catalog 

Applications	Belt Pitches
Lifting	F8, FL8, F12, FL12, FX9, FX12
Conveying - General, Bulk & SheetRock	WF12

Nominal Thickness F8 0.080" FL8 0.080" F12 0.125" FL12 0.125" FX9 0.090" FX12 0.120"

Flat Belt Availability

Application Characteristics  Heavy load lifting or lowering Allows for "slip" requirement Smooth uniform motion  Small bending radius for small design envelope  Very low stretch characteristics		Product Features Smooth, vibration free operation Small pulley diameters High strength, low stretch for long life Sealed edges, no cord fraying Easily guided with flanged pulleys Kevlar®  cord No lubrication needed No retensioning required
Additional Ordering information  Flat Belt Specifications

Flat Belt Availability
F8 FL8 F12 FL12 FX9, FX12 Min. Welded Belt Length inch 19 21 20 24 N/A mm 483 533 508 610 N/A Standard Roll Length feet 200 200 200 200 200 meters 61 61 61 61 61 Standard Slitting Lanes inch 1 1 1 1 1 mm 25 25 25 25 25 All roll lengths are +/- 1%                         Available Widths     Inch mm F8, FL8, F12, FL12 FX9 FX12     1/2 12.7 X         5/8 15.9     X     3/4 19.1 X   X     15/16 23.8   X X     1 25.4 X   X     1 1/4 31.8     X     1 1/2 38.1 X         2 50.8 X         3 76.2 X         4 101.6 X                       Width Tolerances         Width F8, FL8, F12, FL12 FX9, FX12         Up to 2" +/-.020" +/-.030"         >2" - 4" +/-.030" N/A
Flat Belt Specifications
F8 FL8 F12 FL12 FX9 FX12 Nominal Thickness inch 0.080 0.080 0.125 0.125 0.090 0.120 metric 2.0 2.0 3.0 3.0 2.3 3.0 Ultimate Tensile Strength per Inch or 25mm Belt Width Steel lbf/in 1605 3204 1605 5445 N/A N/A N/25mm 7140 14250 7140 24220 N/A N/A Kevlar lbf/in 1818 N/A 1818 N/A 4090 4680 N/25mm 8085 N/A 8085 N/A 18190 20820 Max. Allowable Belt Tension per Inch or 25mm Belt Width Steel Open Ended lbf/in 436 854 436 1338 N/A N/A N/25mm 1939 3801 1939 5954 N/A N/A Welded lbf/in 218 N/A 218 N/A N/A N/A N/25mm 970 N/A 970 N/A N/A N/A Max. Allowable Belt Tension per Inch or 25mm Belt Width Kevlar Open Ended lbf/in 243 N/A 243 N/A 1020 1170 N/25mm 1081 N/A 1081 N/A 4540 5200 Welded lbf/in 121 N/A 121 N/A N/A N/A N/25mm 540 N/A 540 N/A N/A N/A Specific Weight Steel lbf/ft/in 0.057 0.073 0.078 0.113 N/A N/A kgf/m/cm 0.033 0.043 0.046 0.066 N/A N/A Kevlar lbf/ft/in 0.045 N/A 0.066 N/A 0.043 0.060 kgf/m/cm 0.026 N/A 0.039 N/A 0.025 0.035 Specific Belt Stiffness (Open Ended) Steel lbf/in 109000 213600 109000 334600 N/A N/A N/mm 19085 37410 19085 58600 N/A N/A Kevlar lbf/in 60700 N/A 60700 N/A 90000 130000 N/mm 10635 N/A 10635 N/A 15760 22760 Min. Pulley Diameter (Inch or mm) in 2.0 2.375 2.0 3.0 3.0 4.0 mm 50 60 50 75 75 100 Min. Diameter of Tensioning Idler Running on Back of Belt in 3.0 4.75 3.0 6.00 4.5 6.0 mm 80 120 80 150 115 150 Standard Material PU PU PU PU PU or TPR PU or TPR Standard Colors (N=Natural , BK=Black) N BK N BK BK BK Materials  92A PU 85A PU  TPR Service Temperature Range –5° C to 70° C -10°C to 60°C  -10°C to 70°C (23° F to 158° F) (14° F to 140° F) (14° F to 158° F)  Hardness, Shore A   92 85 90   Belt Material vs. Steel (dry) 0.5 0.7 0.5   Urethane vs. Aluminum (dry) 0.5 0.6 0.5 Coefficient of Friction Belt Material vs. UHMWPE (dry) 0.2 0.4 0.2   Nylon vs. Steel (dry)  0.2 to 0.4 0.2 to 0.4 0.2 to 0.4   Nylon vs. UHMWPE (dry) 0.1 to 0.3 0.1 to 0.3 0.1 to 0.3 Do not use Gates Mectrol belts, pulleys or sprockets in applications that depend solely upon the belt to raise/lower, support or sustain a mass without an independent safety backup system. The specifications listed are based on Gates Mectrol's experience. However, our specifications and data do NOT cover all possible belt drive conditions. It is the responsibility of the belt drive system designer to ensure Gates Mectrol's belts are appropriate for a given system and application. The provided data is representative of our in-house experience and does not necessarily match product performance in industrial use. Gates Mectrol cannot assume any liability concerning the suitability and process ability of our products. We also cannot assume liability for process results, damages or consequential damages associated with the use of our products. Note, ultimate tensile strengths are listed for references purposes only. Ultimate tensile strength values listed above are a theoretical calculation based on average cord strength and may not represent actual tensile test results.
Pulley Design Recommendations Gates Mectrol flat belts have very high strength and extremely low stretch. They are designed to be run on flat faced pulleys with flanges. Crowned pulleys should not be used.                                                        Gates Mectrol flat belts are not recommended for applications which involve belt twisting. Should an application require that a belt be twisted 90°, the length over which the twist occurs should be a minimum of 15 inches for a one inch wide belt                                                       Gates Mectrol flat belts are not to be used in "lat" pulldown fitness machines or other machines in which belt twist is unrestricted.