{"id":511,"date":"2026-05-25T06:45:10","date_gmt":"2026-05-25T06:45:10","guid":{"rendered":"https:\/\/planetary-gearboxes.com\/?post_type=product&p=511"},"modified":"2026-05-25T06:45:10","modified_gmt":"2026-05-25T06:45:10","slug":"pf-high-torque-planetary-gearbox","status":"publish","type":"product","link":"https:\/\/planetary-gearboxes.com\/el\/product\/pf-high-torque-planetary-gearbox\/","title":{"rendered":"\u03a0\u03bb\u03b1\u03bd\u03b7\u03c4\u03b9\u03ba\u03cc \u03ba\u03b9\u03b2\u03ce\u03c4\u03b9\u03bf \u03c4\u03b1\u03c7\u03c5\u03c4\u03ae\u03c4\u03c9\u03bd \u03c5\u03c8\u03b7\u03bb\u03ae\u03c2 \u03c1\u03bf\u03c0\u03ae\u03c2 \u03b3\u03b9\u03b1 \u03b2\u03b1\u03c1\u03b9\u03ac \u03b2\u03b9\u03bf\u03bc\u03b7\u03c7\u03b1\u03bd\u03af\u03b1 \u2014 \u03a3\u03b5\u03b9\u03c1\u03ac PF (60\/90\/120\/150PF)"},"content":{"rendered":"

<\/main><\/p>\n
\n

Heavy-Duty Planetary Gearbox for Continuous Industrial Operation<\/h2>\n
\n

<\/p>\n

\n

\"\u03a0\u03bb\u03b1\u03bd\u03b7\u03c4\u03b9\u03ba\u03cc<\/p>\n

\n
\n
625<\/div>\n
Max Torque (N\u00b7m)<\/div>\n<\/div>\n
\n
3\u00d7<\/div>\n
Peak Torque<\/div>\n<\/div>\n
\n
IP65<\/div>\n
Protection Class<\/div>\n<\/div>\n
\n
\u226462 dB<\/div>\n
Noise (60PF)<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

\u039f PF series high-torque planetary gearbox<\/strong> is designed for continuous operation under high sustained loads where conventional inline helical reducers overheat and worm gearboxes<\/a> sacrifice unacceptable efficiency losses. Engineered around a reinforced ring-gear housing with oversized output-shaft bearings, the PF series absorbs radial loads up to 14,000 N<\/strong> (150PF) and axial loads up to 5,200 N<\/strong> (90PF) \u2014 load ratings that reflect real-world conveyor belt tensions and hoist sheave forces, not laboratory-ideal conditions.<\/p>\n

The 3\u00d7 instantaneous peak torque rating protects motor shafts during abrupt starts under full load, emergency stops, and shock-load events common in mining crushers, cement mixers, and ship-loader conveyor drives. IP65 protection keeps process water, cement slurry, and mine dust out of the gear cavity indefinitely.<\/p>\n

\n
\n
\ud83d\udcaa 3\u00d7 Peak Torque<\/div>\n
Handles shock-load events without shaft or coupling damage.<\/div>\n<\/div>\n
\n
\ud83d\udee1\ufe0f IP65 Sealed<\/div>\n
Full dust-tight + water-jet proof for outdoor and wet-process plants.<\/div>\n<\/div>\n
\n
\ud83d\udd07 Low Noise<\/div>\n
\u226462\u201368 dB across all frame sizes \u2014 quiet enough for 24\/7 factory floors.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

<\/p>\n

\n

60PF \/ 90PF \/ 120PF \/ 150PF \u2014 Model Comparison<\/h2>\n

Four frame sizes cover the full spectrum of industrial load requirements \u2014 from compact conveyor take-up units (60PF) to large-frame hoisting and crusher drives (150PF). All models share identical gear ratio availability and bearing preload philosophy; frame size determines torque and load capacity.<\/p>\n

\"60PF \"90PF \"120PF \"150PF<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nUnit<\/th>\n60PF<\/th>\n90PF<\/th>\n120PF<\/th>\n150PF<\/th>\n<\/tr>\n<\/thead>\n
Rated Output Torque (min)<\/td>\nN\u00b7m<\/td>\n43<\/td>\n141<\/td>\n294<\/td>\n549<\/td>\n<\/tr>\n
Rated Output Torque (max)<\/td>\nN\u00b7m<\/td>\n625<\/td>\n625<\/td>\n625<\/td>\n625<\/td>\n<\/tr>\n
Peak Torque (3\u00d7 rated)<\/td>\nN\u00b7m<\/td>\n\u22641,875<\/td>\n\u22641,875<\/td>\n\u22641,875<\/td>\n\u22641,875<\/td>\n<\/tr>\n
Noise Level (rated speed)<\/td>\ndB(A)<\/td>\n\u226462<\/td>\n\u226465<\/td>\n\u226468<\/td>\n\u226468<\/td>\n<\/tr>\n
Max Input Speed (no-load)<\/td>\n\u03c3\u03c4\u03c1\u03bf\u03c6\u03ad\u03c2\/\u03bb\u03b5\u03c0\u03c4\u03cc<\/td>\n3,500<\/td>\n3,500<\/td>\n3,000<\/td>\n3,000<\/td>\n<\/tr>\n
Max Radial Load (output shaft)<\/td>\n\u0392<\/td>\n\u2014<\/td>\n6,200<\/td>\n7,500<\/td>\n14,000<\/td>\n<\/tr>\n
Max Axial Load (output shaft)<\/td>\n\u0392<\/td>\n\u2014<\/td>\n5,200<\/td>\n\u2014<\/td>\n\u2014<\/td>\n<\/tr>\n
Gear Ratio Range<\/td>\n\u2014<\/td>\n3 : 1 \u2014 100 : 1 (single & two-stage)<\/td>\n<\/tr>\n
\u0398\u03b5\u03c1\u03bc\u03bf\u03ba\u03c1\u03b1\u03c3\u03af\u03b1 \u03bb\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03af\u03b1\u03c2<\/td>\n\u00b0C<\/td>\n\u221210 to +90<\/td>\n<\/tr>\n
Protection Class<\/td>\n\u03a0\u03bd\u03b5\u03c5\u03bc\u03b1\u03c4\u03b9\u03ba\u03ae \u0399\u03b4\u03b9\u03bf\u03ba\u03c4\u03b7\u03c3\u03af\u03b1<\/td>\nIP65 (standard)<\/td>\n<\/tr>\n
\u03a0\u03c1\u03bf\u03c3\u03b1\u03bd\u03b1\u03c4\u03bf\u03bb\u03b9\u03c3\u03bc\u03cc\u03c2 \u03c4\u03bf\u03c0\u03bf\u03b8\u03ad\u03c4\u03b7\u03c3\u03b7\u03c2<\/td>\n\u2014<\/td>\nAny direction<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

<\/p>\n

\u25b8 Frame Size Selection Rule: <\/span>
\n
\nSelect frame size based on required output torque + radial load at the output shaft<\/strong>, not motor power alone.
\nA 60PF with a 100:1 ratio on a 100 W motor will produce far higher output torque than the frame can sustain \u2014 always cross-check rated torque against both the calculated load torque and the bearing radial load from sprockets or pulleys.
\n<\/span><\/div>\n<\/section>\n

<\/p>\n

\n

Structural Engineering for Heavy-Load Reliability<\/h2>\n
\n
\n

Where precision-grade gearboxes minimise backlash at the cost of load capacity, the PF series reverses the engineering priority: every structural choice maximises load capacity and service life under sustained heavy duty, while still holding noise within acceptable factory-floor limits through precision-ground helical tooth profiles.<\/p>\n

Key Design Features<\/h3>\n

<\/p>\n

    \n
  1. 1<\/span>\n
    \n

    Ductile Iron Housing with Ribbed Reinforcement<\/strong><\/p>\n

    GJS-500 ductile iron housing with external rib geometry distributes bending loads from output shaft cantilevered sprockets, preventing housing distortion that causes gear misalignment and premature wear.<\/p>\n<\/div>\n<\/li>\n

  2. 2<\/span>\n
    \n

    Oversized Tapered Roller Output Bearings<\/strong><\/p>\n

    Output shafts run in paired tapered roller bearings, not ball bearings, enabling the 14,000 N radial load rating on 150PF without bearing deflection that would offset planet gear mesh geometry.<\/p>\n<\/div>\n<\/li>\n

  3. 3<\/span>\n
    \n

    Helical Planet Gears \u2014 Reduced Noise, Higher Overlap<\/strong><\/p>\n

    Helical tooth profiles provide 1.6\u00d7 contact ratio versus spur gears, smoothing torque pulsation under fluctuating loads and holding noise to \u226468 dB(A) at rated speed \u2014 8\u201310 dB quieter than comparable spur-planet designs.<\/p>\n<\/div>\n<\/li>\n

  4. 4<\/span>\n
    \n

    Double-Lip IP65 Output Shaft Sealing<\/strong><\/p>\n

    Spring-energised double-lip radial shaft seals with dust exclusion lips prevent ingress of cement dust, coal dust, mine water, and spray cleaning in harsh production environments without requiring protective covers or sleeve guards.<\/p>\n<\/div>\n<\/li>\n

  5. 5<\/span>\n
    \n

    Lifetime High-Viscosity Grease Fill<\/strong><\/p>\n

    High-viscosity lithium complex grease engineered for sustained temperatures to +90\u00b0C eliminates the oil-level inspection windows and drain plugs that corrode and leak in outdoor industrial installations.<\/p>\n<\/div>\n<\/li>\n<\/ol>\n<\/div>\n

    <\/p>\n

    \n
    \n

    PF Series at a Glance<\/h3>\n