{"id":513,"date":"2026-05-25T06:53:29","date_gmt":"2026-05-25T06:53:29","guid":{"rendered":"https:\/\/planetary-gearboxes.com\/?post_type=product&p=513"},"modified":"2026-05-25T06:53:30","modified_gmt":"2026-05-25T06:53:30","slug":"wple-wplf-right-angle-planetary-gearbox","status":"publish","type":"product","link":"https:\/\/planetary-gearboxes.com\/fi\/tuote\/wple-wplf-right-angle-planetary-gearbox\/","title":{"rendered":"Suorakulmainen planeettavaihteisto tilarajoitteisiin k\u00e4ytt\u00f6ihin \u2014 WPLE\/WPLF-sarja"},"content":{"rendered":"

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Right-Angle Planetary Gearbox \u2014 90\u00b0 Output Without Compromise<\/h2>\n
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\"Suorakulmainen<\/p>\n

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90\u00b0<\/div>\n
Output Direction<\/div>\n<\/div>\n
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97%<\/div>\n
Peak Efficiency<\/div>\n<\/div>\n
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3\u2013512<\/div>\n
Gear Ratio<\/div>\n<\/div>\n
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\u22644′<\/div>\n
Backlash (WPLE)<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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The WPLE\/WPLF right-angle planetary gearbox<\/strong> solves the persistent machine-design challenge of routing power through a perpendicular axis without sacrificing the efficiency, compactness, or precision of inline planetary transmission. Where conventional worm gear reducers<\/a> lose 10\u201330% of input power to sliding-contact heat generation, the WPLE\/WPLF bevel-planetary gear train achieves efficiency up to 97%<\/strong> \u2014 enabling motor downsizing and significantly reducing thermal management requirements in enclosed panel enclosures.<\/p>\n

The series covers gear ratios from 3:1 to 512:1<\/strong> through single and multi-stage configurations. WPLE precision-grade backlash (\u22644 arcmin) meets positioning servo requirements on perpendicular axes, while WPLF standard-grade serves general material-handling, conveyor, and lift applications where duty cycle and cost-per-unit matter more than angular precision.<\/p>\n

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\ud83d\udcd0 True 90\u00b0 Output<\/div>\n
Perpendicular shaft for layouts where inline gearboxes cannot fit.<\/div>\n<\/div>\n
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\u26a1 Up to 97% Efficient<\/div>\n
Bevel-planetary design outperforms worm drives by 10\u201330% efficiency.<\/div>\n<\/div>\n
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\ud83c\udfaf Servo Compatible<\/div>\n
WPLE \u22644 arcmin backlash for perpendicular servo positioning axes.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

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Technical Specifications \u2014 WPLE vs WPLF<\/h2>\n

WPLE and WPLF share the same 90-degree bevel-planetary gear architecture and identical housing dimensions. Selection depends on backlash requirement and application precision class.<\/p>\n

\u00a0\"WPLE \"WPLF<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nUnit<\/th>\nWPLE Series
\nPrecision Grade<\/span><\/th>\n		WPLF Series
\nStandard Grade<\/span><\/th>\n<\/tr>\n<\/thead>\n
Output Direction<\/td>\n\u2014<\/td>\n90\u00b0 perpendicular to input shaft<\/td>\n<\/tr>\n
Backlash \u2014 Precision Grade<\/td>\nkaarimin<\/td>\n\u2264 4<\/td>\n\u2264 6<\/td>\n<\/tr>\n
Backlash \u2014 Standard Grade<\/td>\nkaarimin<\/td>\n\u2264 8<\/td>\n\u2264 12<\/td>\n<\/tr>\n
Gear Ratio Range<\/td>\n\u2014<\/td>\n3 : 1 \u2014 512 : 1 (single & multi-stage)<\/td>\n<\/tr>\n
Frame Sizes<\/td>\nmm<\/td>\n40 \/ 60 \/ 80 \/ 100 \/ 120<\/td>\n<\/tr>\n
Full-Load Efficiency<\/td>\n%<\/td>\n\u2265 97<\/td>\n\u2265 94<\/td>\n<\/tr>\n
K\u00e4ytt\u00f6l\u00e4mp\u00f6tila<\/td>\n\u00b0C<\/td>\n\u221225 to +90<\/td>\n<\/tr>\n
Protection Class<\/td>\nIP-osoite<\/td>\nIP54 standard \u00b7 IP65 on request<\/td>\n<\/tr>\n
Voitelu<\/td>\n\u2014<\/td>\nLifetime sealed \u2014 maintenance-free<\/td>\n<\/tr>\n
Service Life (rated load)<\/td>\nhrs<\/td>\n30,000<\/td>\n<\/tr>\n
Mounting Orientation<\/td>\n\u2014<\/td>\nAny direction<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\u25b8 WPLE vs WPLF Selection: <\/span>
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\nSelect WPLE<\/strong> for servo-driven perpendicular axes where backlash below 4 arcmin and efficiency above 96% are required. Both variants use identical housing dimensions \u2014 WPLE can be upgraded from WPLF without mechanical redesign.
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Bevel-Planetary Architecture \u2014 How Right-Angle Efficiency Is Achieved<\/h2>\n

Conventional worm gearboxes produce 90-degree output through sliding-contact between a worm shaft and worm wheel \u2014 an inherently inefficient mechanism where friction losses scale with speed and load. The WPLE\/WPLF series eliminates this mechanism entirely, replacing it with a ground spiral bevel gear pair at the input stage followed by a precision planeettavaihteiston alennus<\/a> stage. Both gear contacts are rolling, not sliding, resulting in the dramatically lower heat generation that enables the 94\u201397% efficiency rating.<\/p>\n

Two-Stage Power Path<\/h3>\n
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  1. 1<\/span>\n
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    Spiral Bevel Input Stage \u2014 Direction Change<\/strong><\/p>\n

    A precision-ground spiral bevel gear pair redirects the input shaft rotation by exactly 90 degrees. Spiral tooth geometry provides gradual tooth engagement, minimising the impact shock and noise that straight-cut bevel gears generate. The bevel stage contributes a small initial ratio reduction (typically 1:1 to 2:1) depending on frame configuration.<\/p>\n<\/div>\n<\/li>\n

  2. 2<\/span>\n
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    Planetary Gear Stage \u2014 Torque Multiplication<\/strong><\/p>\n

    The bevel stage output drives the planetary sun gear. Three symmetrically arranged planet gears distribute load across multiple tooth contacts simultaneously \u2014 the same rolling-contact, multi-mesh efficiency mechanism that makes inline planetary gearboxes the highest-efficiency transmission option at equivalent torque density.<\/p>\n<\/div>\n<\/li>\n

  3. 3<\/span>\n
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    Multi-Stage Extension \u2014 Ratios up to 512:1<\/strong><\/p>\n

    For ratios beyond single-stage capability, additional planetary stages are added inline behind the first. Each additional stage multiplies the ratio while maintaining compact axial length. Three-stage configurations achieve the 512:1 maximum ratio while keeping total gearbox length comparable to a two-stage inline unit.<\/p>\n<\/div>\n<\/li>\n

  4. 4<\/span>\n
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    Sealed Output \u2014 Any-Angle Mounting<\/strong><\/p>\n

    The 90-degree output flange is sealed with a double-lip radial shaft seal rated IP54 standard, IP65 optional. Unlike worm gearboxes that require oil-bath mounting orientation to maintain proper lubrication contact, the sealed grease fill works equally in horizontal, vertical-up, vertical-down, or wall-mount configurations.<\/p>\n<\/div>\n<\/li>\n<\/ol>\n<\/section>\n

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    Right-Angle Gearbox Comparison \u2014 Why Bevel-Planetary Beats Worm<\/h2>\n

    The dominant technology for 90-degree industrial drives has historically been the worm gearbox, valued for simplicity and self-locking at high ratios. However, worm efficiency limitations become costly as motor power and operating hours increase. The table below quantifies the differences that matter to machine designers.<\/p>\n

    \n\n\n\n\n\n\n\n\n\n\n\n
    Criterion<\/th>\nWPLE\/WPLF \u2605<\/th>\nWorm Gearbox<\/th>\nBevel-Helical<\/th>\nHypoid<\/th>\n<\/tr>\n<\/thead>\n
    Efficiency at rated load<\/td>\n94\u201397%<\/td>\n70\u201388%<\/td>\n94\u201397%<\/td>\n90\u201395%<\/td>\n<\/tr>\n
    Backlash (precision grade)<\/td>\n\u22644 arcmin<\/td>\n15\u201330 arcmin<\/td>\n10\u201320 arcmin<\/td>\n10\u201315 arcmin<\/td>\n<\/tr>\n
    Maintenance<\/td>\nSealed \u2014 none<\/td>\nOil change every 2,000 h<\/td>\nOil check \/ change<\/td>\nOil bath required<\/td>\n<\/tr>\n
    Mounting orientation<\/td>\nAny direction<\/td>\nOrientation-sensitive<\/td>\nOrientation-sensitive<\/td>\nOrientation-sensitive<\/td>\n<\/tr>\n
    Self-locking capability<\/td>\nNot inherent<\/td>\nYes (ratio \u226540:1)<\/td>\nNo<\/td>\nNo<\/td>\n<\/tr>\n
    Torque density<\/td>\n\u25c9\u25c9\u25c9\u25c9\u25c9<\/td>\n\u25c9\u25c9\u25c9\u25cb\u25cb<\/td>\n\u25c9\u25c9\u25c9\u25c9\u25cb<\/td>\n\u25c9\u25c9\u25c9\u25c9\u25cb<\/td>\n<\/tr>\n
    Ratio range (single unit)<\/td>\n3:1 \u2013 512:1<\/td>\n5:1 \u2013 100:1<\/td>\n4:1 \u2013 300:1<\/td>\n4:1 \u2013 100:1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    Note: For vertical-shaft hoist or gate-drive applications requiring fail-safe back-drive prevention, a worm gearbox or planetary with spring-set brake remains the appropriate choice. WPLE\/WPLF does not inherently self-lock and requires a mechanical brake for gravity-loaded vertical drives.<\/p>\n<\/section>\n

    \"types<\/p>\n

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    Where Right-Angle Planetary Drives Deliver Real Advantage<\/h2>\n
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    Conveyor Belt Head & Tail Drives<\/h3>\n

    Conveyor drives routinely require the motor to mount perpendicular to the belt conveyor centerline \u2014 a layout that reduces floor footprint and simplifies maintenance access. The WPLF series eliminates the worm gearbox oil change intervals that force conveyor shutdowns every 2,000 hours in food processing and packaging plants. Sealed grease fill allows conveyor head drives to run maintenance-free across the full 30,000-hour gearbox life.<\/p>\n<\/div>\n

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    Servo-Driven Perpendicular Positioning<\/h3>\n

    Gantry-style CNC machines with horizontal and vertical axes sharing a single drive column, robotic tool-change carousels, and multi-axis assembly systems benefit from WPLE units where the servo motor and output axis must be perpendicular. The \u22644 arcmin backlash specification ensures that direction reversal does not introduce positioning error exceeding the machine’s tolerance class. This application pairs naturally with precision CV drive shafts<\/a> for extended-reach output axis connections.<\/p>\n<\/div>\n

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    Lift & Scissor Table Drives<\/h3>\n

    Scissor-lift platforms and vertical lift tables often house the drive motor horizontally beneath the lifting deck \u2014 requiring 90-degree output to drive the vertical screw or gear rack. The WPLF IP54 rated housing withstands hydraulic fluid splatter and industrial wash-down in warehouse and manufacturing environments. Note: a mechanical brake is required for load-holding safety; WPLE\/WPLF does not self-lock.<\/p>\n<\/div>\n<\/div>\n

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    Right-Angle Drive Applications<\/h3>\n