Total torque output of the gear: Output Power (with worm gear and rolling friction T₁ = lb-in. losses): Po hp Axial pitch of worm: Lead of the worm: Px = in L = in Lead angle: λ = deg velocity ratio: VR = Gear pitch diameter: DG = in Input Speed of Worm: nw = rpm Pitch Line Velocity for the Worm: Sliding Velocity for the Worm: Exponent for Sliding Velocity: High speed coefficient of friction: Gear Tangential Force: VEN = ft/min Vs = ft/min Exp= με WIG = lb Gear Friction Force W,- lb Power Loss Due to Worm Gear Friction: PL hp Minimum Motor Input Power: Number of AC power phases required: P₁ = hp Pick a choice from the dropdown menu Phase Enclosure Motor_Type Motor Mount Type of Enclosure required: Type of Motor Required: Pick a choice from the dropdown menu Pick a choice from the dropdown menu Single Type of Motor Mount Required: Pick a choice from the dropdown menu Open 3-Phase TENV TEFC Synchronous Universal Split Phase Foot C-Face Cushion-Base From Baldor Catalog, pick the motor with slightly higher Actual Motor Input Power: Pa = hp power rating, but with the closest speed to what is Explosion Proof needed Capacitor Start D-Flange Actual Motor Speed: nm = rpm Baldor Motor Part Number: AC Voltage: From Baldor Catalog From Baldor Catalog Note: 115 volts and 120 volts are equivalent specs IEEE 841- 2001 Severe Duty Permanent Split Capacitor Washdown Duty Capacitor Start/Run Shaded Pole Gear Input Data: Torque needed to overcome rolling friction in rollers, slides and other moving parts, except for Motor and Worm Gear the worm gear T₁ = Length of travel of door: Time for door to open or close: LD = 50 lb-in. 90 in t= 12.5 seconds Pitch diameter for chain sprocket: DPC 1.690 in Weight of Door: P = No. of worm threads: Nw = Worm Pitch diameter: Dw Diametral pitch: Pd Normal pressure angle: Degrees per Radian: Number of gear teeth: Calculated Data: Linear velocity of door and chain (in/sec): Linear velocity of door and chain (ft/min): Output Speed of Gear and Sprocket: Upward Force due to Weight of Door: Фо = = NG= 240 lb 2 1.250 in 12 14.5 degrees 57.2958 degrees 28 Vα= in/sec VC= ft/min NG = rpm FD lb Net Upward Force on Door: Fou lb Torque on gear ignoring rolling friction: TG = lb-in. Formula = FDU FD-2 x Fo (note: Fo is the Max Operating load of the extension springs). This is also the initial tension in the chain. TG = FDU X DPC/2 This is the also the torque on the sprocket