Pully & Belt Configurator MISUMI Metric Catalog
5Pages

(Technical Calculations] Selection of Timing Belts 1 Procedure 1 : Setting the Necessary Design Conditions Table 1 : Load Correction Coefficient (Ko) ®Typical machines using a belt are listed above. For othe Table 2—1 : Idler Compensation Coefficient (Ki) r machines using a belt, a load correction coefficient should be fixed by reference to this table. Table 2—2 : Speed Ratio Correction Coefficient (Kr) IPDM Type (A selection sequence should be fixed by reference to the table below.! Table 3—1 : Coefficient to Be Used (Ko) Note: When the transmission involves regular/reverse revolutions, large momentum or extreme impact, a basic-use coefficient of 2.5 or more should be used in some cases. Table3—2: Correction coefficient (Ki) when idler is used. Table 3—3: Speed Increase Correction Coefficient (Kr) Table 3-4: Operation Hours Correction Coefficient (Kh) Should be added for each idler. Pulley Diameter Table 4 : Min. Number of Teeth of Pulley Procedure 3: Selecting the Belt Length-See Official Table Be low- Procedure 4 : Determining the Belt Width Table 5 : Engagement Correction Coefficient (Km) Table 7 : Width Correction Coefficient (Kb) Table 6 : Reference Belt Width Procedure 5 : Checking the Inter-Axial Distance Adjustment Range Min. Inter-Axial Distance Adjustment Range The minimum inter-axial distance adjustment range can be found from Table 8 with the belt attaching range and stretch range taken into account. Ci (Min. Adjustment Range, Inside) Table 8: Minimum Inter-Axial Distance Adjustment Range Belt Length Design Power Belt Length Contact Angle Belt Width Pd=Pt- (Ko+Ki+Kr) Pd=Pt • (Ko+Ki+Kr+Kh) : Load Correction Coefficient : Idler Correction Coefficient : Rotary Ratio Correction Coetticient (Speed Increase Correction Coetticient) : Operating Correction Coetticient Reference Transmission uacscrtv ifcWi Engagement Compensation Coetticient Width Compensation Coetticient No. of Teeth of Large Pulley No.of Teeth of Small Pulley Effective Circurn. Length ot Belt (mm) Effective Dia. of Large Pulley (mm) Effective Dia. ot Small Pulley (mm) Ettedive Dia. ot Large Pulley (mm) Ettedive Dia. ot Small Pulley (mm) Effective Circurn. Length of Belt (mm) Contact Angle ot Small Pulley f) Ettedive Dia ot Large Pulley (mm) Ettedive Dia ot Small Pulley (mm) No. of Teeth Engaged ot Small Pulley No. of Teeth of Small Pulley Contad Angle ot Small Pulley f) Belt Width Reference Belt Width Reference Transmission uanach ifcWi Engagement Correction Coetticient Width Correction Coetticient Belt Speed Effective Tension Initial Tension Belt Speed (m/sec) Pitch Diameter ot Small Pulley (mm) No. of Revolutions of Small Pulley (rpm) Ettedive Tensile Force (N Ikgfl) Belt Speed (m/sec) Effective Tension N - m Ikgf-ml Pitch Diameter of Small Pulley (m) Effective Tensile Force N Ikgfl Belt Speed (m/sec) Effective Tensile Force, N ■ m IkgM Pitch Diameter of Small Pulley (m) Tensile Force Ratio Tensile Force on Tense Side, N Ikgfl Tensile Force on Loose Side, N Ikgfl Original Tensile Force of Belt, N Ikgfl Contact Angle Correction Coefficient Belt Speed (m/sec) Unit Weight of Belt (kg/m) Effective Dia. of Large Pulley (mm) Effective Dia. of Small Pulley (mm)

(Technical Calculations] Selection of Timing Belts 2 —Transmission Capacity Table— Table 9 : Reference Transmission Capacity of MXL Pr—Belt 025 (6.4mm) - _No. of Teeth of Small Pulley * The above table is for Belt Nominal 025(6.4 mm). Should be multiplied by the width correction coefficient, Kb, in Table 7 for a belt with a different width. Table 10 : Reference Transmission Capacity of XL Pr—Belt 100 (25.4mm)- * The above table is for Belt Nominal 100 (25.4mm). Should be multiplied by the width correction coefficient, Kb, in Table 7 for a belt with a different width. Table 11 : Reference...

(Technical Calculations] Selection of Timing Belts 3 —Transmission Capacity Table— Table 13 : Reference Transmission Capacity of S2M Pr—4mm Wide Belt— (W) *The above table is for 4mm wide Belt. Should be multiplied by the width correction coefficient, Kb, in Table 7 for a belt with a different width. Table 14 : Reference Transmission Capacity of S3M Pr—6mm Wide Belt— (W) *The above table is for 6mm wide Belt. Should be multiplied by the width correction coefficient, Kb, in Table 7 for a belt with a different width. Table 15 : Reference Transmission Capacity of S5M Pr—10mm Wide Belt- *The...

(Technical Calculations] Selection of Timing Belts 4 —Transmission Capacity Table— Table 17 : Reference Transmission Capacity of P2M Pr—Belt Width 4mm- No. of Teeth ot Small Pulley of Small Pulley (rpre)^ * jThe durability in terms of hours decreases in these ranges. Should be avoided whenever possible. Table 18 : Reference Transmission Capacity of P3M Pr—Belt Width 6mm— No. olTeelli of Small Pulley * u__ jThe durability in terms of hours decreases in these ranges. Should be avoided whenever possible. Table 19 : Reference Transmission Capacity of P5M Pr—Belt Width 10mm- No. of Teeth of...

[Technical Calculations] Selection of Timing Belts 5 —Transmission Capacity Table— * JThe durability in terms of hours decreases in these ranges. Should be avoided whenever possible. * The above table is for 10mm wide Belt. Should be multiplied by the width compensation coefficient, Kb, in Table 7 for a belt with a different width. Table 22 : Reference Transmission Capacity of T10 Pr—Belt Width 10mm— * r___]The durability in terms of hours decreases in these ranges. Should be avoided whenever possible. * iThe circumferential speed of the pulley rises to 33m/sec or more in these ranges; a...