{"id":592,"date":"2026-05-28T06:04:05","date_gmt":"2026-05-28T06:04:05","guid":{"rendered":"https:\/\/planetary-gearboxes.com\/?post_type=product&p=592"},"modified":"2026-05-28T06:04:05","modified_gmt":"2026-05-28T06:04:05","slug":"ep-adr-right-angle-round-flange-planetary-gearbox","status":"publish","type":"product","link":"https:\/\/planetary-gearboxes.com\/el\/product\/ep-adr-right-angle-round-flange-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 \u03b1\u03ba\u03c1\u03b9\u03b2\u03b5\u03af\u03b1\u03c2 \u03bc\u03b5 \u03c3\u03c4\u03c1\u03bf\u03b3\u03b3\u03c5\u03bb\u03ae \u03c6\u03bb\u03ac\u03bd\u03c4\u03b6\u03b1 \u03ba\u03b1\u03b9 \u03bf\u03c1\u03b8\u03ae \u03b3\u03c9\u03bd\u03af\u03b1 \u03c3\u03b5\u03b9\u03c1\u03ac\u03c2 EP-ADR (EP-ADR047 \u03ad\u03c9\u03c2 EP-ADR255)"},"content":{"rendered":"

<\/main><\/p>\n
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EP-ADR Series \u2014 Right-Angle Round Flange Precision Planetary Gearbox with Ratios 21 \/ 31 \/ 61 \/ 91<\/h2>\n
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\"EP-ADR<\/p>\n

\n
\n
\u2b55 Round
\nFlange + 90\u00b0<\/div>\n
Self-centring right-angle<\/div>\n<\/div>\n
\n
\u22641′<\/div>\n
Backlash P0 (arcmin)<\/div>\n<\/div>\n
\n
21\u00b731\u00b761\u00b791
\n\u0391\u03bd\u03b1\u03bb\u03bf\u03b3\u03af\u03b5\u03c2<\/div>\n
Unique to AD\/ADR range<\/div>\n<\/div>\n
\n
\u226597%<\/div>\n
Single-Stage Efficiency<\/div>\n<\/div>\n<\/div>\n

\n\u2190 Browse All Planetary Gearbox Series
\n<\/a><\/div>\n<\/div>\n
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\u039f EP-ADR series right-angle round flange planetary gearbox<\/strong> is the product when a machine design requires both a circular self-centring flange interface<\/strong> and a 90-degree output direction change<\/strong> simultaneously. Where the EP-ABR right-angle series<\/a> uses a square bolt-pattern flange for flat-plate mounting, EP-ADR uses a precision pilot-diameter circular flange that self-centres into housing bores \u2014 the interface geometry used by rotary tables, circular actuators, and bore-mount mechanisms. Both series are right-angle precision gearboxes; the difference is entirely in the output flange shape and the available gear ratio set.<\/p>\n

EP-ADR inherits the ratio set of the EP-AD inline series<\/a> \u2014 including the four non-standard two-stage ratios 21, 31, 61, and 91<\/strong> that are exclusive to the EP-AD\/EP-ADR product family. These ratios are absent from the EP-ABR square-flange right-angle series. For bore-mounted right-angle rotary table drives where the output speed must match one of these specific values from a standard motor input without a VFD, EP-ADR is the only product in the Korea Ever-Power precision range that delivers all three requirements simultaneously.<\/p>\n

\n
\n
\u2b55 Round + 90\u00b0<\/div>\n
Only Korea Ever-Power right-angle series with circular bore self-centring.<\/div>\n<\/div>\n
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\ud83c\udfaf 21\/31\/61\/91<\/div>\n
Non-standard ratios absent from ABR square-flange right-angle series.<\/div>\n<\/div>\n
\n
\ud83c\udf93 P0\/P1\/P2<\/div>\n
Full precision grade selection at the right-angle output shaft.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

<\/p>\n

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Three Requirements, One Product \u2014 When Round Flange, Right-Angle, and Specific Ratios Must All Coexist<\/h2>\n
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<\/p>\n

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\n
\n
\u2b55<\/span>
\nRequirement 1 \u2014 Round Flange Self-Centring Into Bore<\/strong><\/div>\n

The circular pilot diameter of EP-ADR self-centres into a housing bore to H6\/H7 fit tolerance \u2014 eliminating the eccentricity that would occur when a square-flange gearbox is bolted to a flat plate adjacent to a rotary element. For rotary tables, cylindrical actuators, and bore-mount mechanisms that require the gearbox axis to be concentric with the driven bore, the round flange provides this without a separate concentricity adjustment procedure.<\/p>\n<\/div>\n

\n
\ud83d\udd04<\/span>
\nRequirement 2 \u2014 90-Degree Direction Change<\/strong><\/div>\n

When the servo motor must be positioned perpendicular to the table or actuator output axis \u2014 motor inside the machine base while the table rotates on a perpendicular axis, or horizontal motor driving a vertical bore-mount mechanism \u2014 the right-angle output of EP-ADR achieves the direction change within the single gearbox unit. The P0\/P1\/P2 backlash specification accounts for the internal bevel stage contribution; no additional backlash accumulates from a separately sourced bevel pair.<\/p>\n<\/div>\n

\n
\ud83c\udfaf<\/span>
\nRequirement 3 \u2014 Ratios 21, 31, 61, or 91 at the Right-Angle Output<\/strong><\/div>\n

The four non-standard ratios 21, 31, 61, and 91 are available in EP-ADR as two-stage configurations \u2014 the same ratios present in EP-AD but now delivered at 90 degrees to the motor input. These ratios are absent from EP-ABR. For bore-mounted right-angle rotary table drives where the required output speed corresponds to one of these values from a 1,450 rpm or 1,500 rpm motor input, EP-ADR is the only Korea Ever-Power right-angle precision product that can provide it.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

EP-ADR Position Within the Korea Ever-Power Right-Angle and Round-Flange Range<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n
Property<\/th>\nEP-ADR \u2605<\/th>\nEP-ABR<\/th>\nEP-AD (inline)<\/th>\n<\/tr>\n<\/thead>\n
Output flange<\/td>\nRound \u2014 circular bore self-centring<\/td>\nSquare \u2014 flat plate bolted<\/td>\nRound \u2014 same as EP-ADR<\/td>\n<\/tr>\n
Output direction<\/td>\n90\u00b0 right-angle<\/td>\n90\u00b0 right-angle<\/td>\nInline (coaxial)<\/td>\n<\/tr>\n
Single-stage ratios<\/td>\n4, 5, 7, 10 only<\/td>\n3\u201310 complete (8 values)<\/td>\n4, 5, 7, 10 only<\/td>\n<\/tr>\n
Two-stage ratios<\/td>\n12 values incl. 21\/31\/61\/91<\/td>\n17 values, no 21\/31\/61\/91<\/td>\n12 values incl. 21\/31\/61\/91<\/td>\n<\/tr>\n
Max frame<\/td>\nADR255<\/td>\nABR220<\/td>\nAD255<\/td>\n<\/tr>\n
Frames available<\/td>\n047\/064\/110\/140\/200\/255
\n(no 090 frame)<\/em><\/td>\n		042\/060\/090\/115\/142\/180\/220<\/td>\n047\/064\/090\/110\/140\/200\/255<\/td>\n<\/tr>\n
Backlash grades<\/td>\nP0\/P1\/P2 identical in all three \u2014 bevel stage contribution included in ABR\/ADR specs<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\u25b8 Key selection note: <\/span>
\nIf your application requires single-stage ratio i=3, i=6, i=8, or i=9 with a right-angle output, EP-ADR cannot supply these \u2014 they are not in the EP-ADR ratio set. Specify the EP-ABR square-flange right-angle series instead, which covers the complete 3\u201310 single-stage range. If a round circular flange is also required at these ratios, contact Korea Ever-Power to discuss options.<\/span><\/div>\n<\/section>\n

<\/p>\n

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EP-ADR047 to EP-ADR255 \u2014 Complete Specifications<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
EP-ADR Specifications<\/th>\n<\/tr>\n<\/thead>\n
Output Torque (T2N)<\/td>\n14 N\u00b7m (ADR047) to 2,000 N\u00b7m (ADR255)<\/td>\n<\/tr>\n
Output Direction<\/td>\n90\u00b0 right-angle to motor input axis<\/td>\n<\/tr>\n
\u03a6\u03bb\u03ac\u03bd\u03c4\u03b6\u03b1 \u03b5\u03be\u03cc\u03b4\u03bf\u03c5<\/td>\nRound circular pilot flange \u2014 self-centring into housing bore<\/td>\n<\/tr>\n
Backlash P0<\/td>\nSingle-stage \u22641 arcmin \u00b7 Two-stage \u22643 arcmin (bevel stage included)<\/td>\n<\/tr>\n
Backlash P1<\/td>\nSingle-stage \u22643 arcmin \u00b7 Two-stage \u22645 arcmin<\/td>\n<\/tr>\n
Backlash P2<\/td>\nSingle-stage \u22645 arcmin \u00b7 Two-stage \u22647 arcmin<\/td>\n<\/tr>\n
Single-Stage Ratios<\/td>\n4, 5, 7, 10 (ratios 3, 6, 8, 9 not available)<\/span><\/td>\n<\/tr>\n
Two-Stage Ratios<\/td>\n16, 20, 21<\/strong>, 25, 31<\/strong>, 35, 40, 50, 61<\/strong>, 70, 91<\/strong>, 100 (bold = non-standard, unique to EP-ADR\/EP-AD)<\/span><\/td>\n<\/tr>\n
Single-Stage Efficiency<\/td>\n\u226597%<\/td>\n<\/tr>\n
Two-Stage Efficiency<\/td>\n\u226594%<\/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\u221210 \u00b0C to +90 \u00b0C<\/td>\n<\/tr>\n
IP Rating<\/td>\nIP65 \u2014 single sealed housing for both planetary and bevel stages<\/td>\n<\/tr>\n
Frame Sizes<\/td>\nADR047 \/ ADR064 \/ ADR110 \/ ADR140 \/ ADR200 \/ ADR255 (no ADR090)<\/span><\/td>\n<\/tr>\n
\u039b\u03ac\u03b4\u03c9\u03bc\u03b1<\/td>\nSealed grease \u2014 maintenance-free<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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\u25b8 Note \u2014 no ADR090 frame: <\/span>
\nThe EP-ADR frame range skips the 090 mm body diameter that exists in the EP-AD inline series. If your application requires a body size between ADR064 and ADR110, the next available EP-ADR frame is ADR110. The EP-AD inline series does include a 090 mm frame if an inline (non-right-angle) configuration at that body size is acceptable. Confirm frame dimensions with Korea Ever-Power when specifying the ADR064-to-ADR110 range.<\/span><\/div>\n

<\/p>\n

Non-Standard Ratio Output Speeds \u2014 ADR at Standard Motor Inputs<\/h3>\n
\n\n\n\n\n\n\n\n\n
\u0391\u03bd\u03b1\u03bb\u03bf\u03b3\u03af\u03b1<\/th>\nOutput rpm
\n@ 1,450 rpm<\/th>\n		Output rpm
\n@ 1,500 rpm<\/th>\n		Why this speed matters for right-angle bore-mount applications<\/th>\n<\/tr>\n<\/thead>\n
21<\/td>\n69.0<\/td>\n71.4<\/td>\nBore-mounted right-angle 4th-axis at ~70 rpm for medium-speed Korean machining centres. Fills i=20\/i=25 speed gap.<\/td>\n<\/tr>\n
31<\/td>\n46.8<\/td>\n48.4<\/td>\nVertical bore-mount right-angle indexing turrets at ~48 rpm \u2014 standard Korean CNC lathe turret speed. i=25 too fast (60 rpm), i=35 too slow (43 rpm).<\/td>\n<\/tr>\n
61<\/td>\n23.8<\/td>\n24.6<\/td>\nBore-mounted right-angle heavy rotary tables at ~24 rpm for Ti\/Inconel workpieces. i=50 too fast (29 rpm), i=70 too slow (21 rpm).<\/td>\n<\/tr>\n
91<\/td>\n15.9<\/td>\n16.5<\/td>\nVery slow bore-mount precision positioners at ~16 rpm \u2014 wafer tilt stages, large optical systems. i=70 gives 21 rpm (too fast); i=100 gives 15 rpm (slightly slow).<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Note: ratios 21, 31, 61, and 91 are non-standard values not achievable by multiplying the ADR single-stage values 4\/5\/7\/10. They are independently engineered gear train configurations specific to the EP-AD\/EP-ADR product family \u2014 and absent from EP-ABR.<\/p>\n<\/section>\n

<\/p>\n

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Model Designation Guide \u2014 EP-ADR Part Number<\/h2>\n
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EP-ADR 110 \/ 61 \/ S2 \/ P1<\/div>\n
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EP-ADR<\/div>\n
\u039a\u03bf\u03c1\u03ad\u03b1 Ever-Power
\nRight-Angle
\nRound Flange Inline<\/div>\n<\/div>\n
\n
110<\/div>\n
Body diameter 110 mm
\nNote: no ADR090 \u2014
\njumps from 064 to 110<\/div>\n<\/div>\n
\n
61<\/div>\n
Gear ratio i=61:1
\nTwo-stage
\n~23.8 rpm @ 1,450 rpm<\/div>\n<\/div>\n
\n
S2<\/div>\n
Output shaft
\nS1: smooth
\nS2: with keyway<\/div>\n<\/div>\n
\n
\u03a01<\/div>\n
Backlash grade
\nP0 \u22641′ \/ P1 \u22643′
\nP2 \u22645′ (single-stage)<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

<\/p>\n

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Applications \u2014 Right-Angle Bore-Mount Drives in Korean Industry<\/h2>\n
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CNC 4th-Axis Rotary Tables \u2014 Bore-Mount Right-Angle at i=61<\/h3>\n

Korean 5-axis machining centre 4th-axis rotary tables with a side-entry motor configuration use a bore-mounted right-angle drive. The servo motor is positioned alongside the table column rather than behind the output axis \u2014 the EP-ADR right-angle output drives the table bore while the motor is perpendicular. At i=61 from 1,450 rpm, EP-ADR delivers 23.8 rpm table speed \u2014 the target for titanium and Inconel workpiece machining where neither the i=50 (29 rpm, too fast for surface speed control) nor i=70 (21 rpm, too slow for cycle time) available in other right-angle series meets the specification. The round flange pilots into the 4th-axis housing bore without a separate concentricity setup.<\/p>\n<\/div>\n

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Welding Positioner Tables \u2014 Bore-Mount at i=21\/31<\/h3>\n

Korean automated welding positioner tables require both circular bore mounting (the motor driving through the positioner housing side wall into a circular housing bore) and a precise rotational speed to synchronise weld bead deposition rate with torch travel. EP-ADR at i=21 (69 rpm) or i=31 (47 rpm) from a 1,450 rpm standard induction motor delivers the required speed without a VFD \u2014 eliminating the VFD purchase, programming, and cabinet space from each positioner station. In a facility with 20\u201340 welding cells, eliminating VFDs at each station produces significant cumulative savings. The P2 grade \u22645 arcmin is adequate for weld-fixture positioning repeatability. CV drive shafts available from Korea Ever-Power transmission accessories for tandem dual-drive positioner table configurations.<\/p>\n<\/div>\n

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CNC Lathe Turrets \u2014 Right-Angle Bore Mount at i=31<\/h3>\n

Korean CNC lathe turret indexing mechanisms use a cylindrical housing bore at the turret body centre \u2014 the drive gearbox must pilot into this bore concentrically. The right-angle motor-to-turret direction change is required when the servo motor is mounted axially within the machine tool body, perpendicular to the turret rotation axis. EP-ADR110 at i=31 and P1 \u22643 arcmin delivers the 47 rpm turret indexing speed standard for Korean 2-axis turning centres, with bore concentricity guaranteed by the round circular pilot flange.<\/p>\n<\/div>\n

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Semiconductor Wafer Stage \u2014 P0 \u22641 Arcmin at i=91<\/h3>\n

Korean semiconductor wafer tilt and theta stage positioning requires sub-arcminute precision at low angular velocity. EP-ADR064 P0 at i=91 delivers \u22641 arcmin backlash at the right-angle circular-flange output at ~16 rpm from a standard servo motor input \u2014 essential for optical alignment stages where angular error exceeds the process window tolerance. The round flange self-centres into the stage housing bore, maintaining concentricity through repeated maintenance cycles without re-alignment. The IP65 sealed housing meets cleanroom housekeeping requirements.<\/p>\n<\/div>\n

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Agricultural Machinery \u2014 Right-Angle Bore Drive at i=31\/61<\/h3>\n

Korean precision agriculture equipment with rotating seeder or fertiliser disc heads driven through a bore-mount right-angle mechanism uses EP-ADR to combine the circular bore interface of the disc head housing with a 90-degree direction change from a horizontally mounted servo motor. The i=31 and i=61 ratios deliver the disc rotation rates required for variable-rate seeding applications, and the round flange ensures the disc head remains concentric with the drive axis through field vibration and thermal cycles. Integration with agricultural bevel gearboxes for multi-row seeder configurations distributes the EP-ADR output across multiple seeder heads.<\/p>\n<\/div>\n

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Vertical Column Drives \u2014 Bore-Mount Z-Axis with Worm Holding<\/h3>\n

Korean gantry and column-type automation systems where the Z-axis servo motor is mounted horizontally and drives a vertical lead screw through a bore-mounted coupling use EP-ADR to integrate the direction change and the bore-mount interface in one unit. For vertical axes where gravity load holding on power-off is required, pairing EP-ADR with a downstream self-locking worm reducer provides the holding function without an electromagnetic brake \u2014 with the EP-ADR round flange ensuring the worm stage input concentricity is maintained.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

\"\u03b5\u03c6\u03b1\u03c1\u03bc\u03bf\u03b3\u03ae-\u03c0\u03bb\u03b1\u03bd\u03b7\u03c4\u03b9\u03ba\u03bf\u03cd-\u03ba\u03b9\u03b2\u03c9\u03c4\u03af\u03bf\u03c5<\/p>\n

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Quality Certifications & Testing Standards<\/h2>\n
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ISO 9001<\/div>\n
Quality Management<\/div>\n<\/div>\n
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CE<\/div>\n
EU Machinery Directive<\/div>\n<\/div>\n
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KS<\/div>\n
Korean Industrial Standard<\/div>\n<\/div>\n
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RoHS<\/div>\n
Hazardous Substance Free<\/div>\n<\/div>\n<\/div>\n