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.