{"id":598,"date":"2026-05-29T03:20:14","date_gmt":"2026-05-29T03:20:14","guid":{"rendered":"https:\/\/planetary-gearboxes.com\/?post_type=product&p=598"},"modified":"2026-05-29T03:20:14","modified_gmt":"2026-05-29T03:20:14","slug":"ep-economic-line-planetary-gearbox-series","status":"publish","type":"product","link":"https:\/\/planetary-gearboxes.com\/nl\/product\/ep-economic-line-planetary-gearbox-series\/","title":{"rendered":"EP Economic Line planetaire tandwielkastserie"},"content":{"rendered":"

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EP Economic Line \u2014 Lowest-Cost Planetary Gearbox Family for General Automation<\/h2>\n
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\"EP<\/p>\n

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Lowest
\nCost<\/div>\n
Economic tier<\/div>\n<\/div>\n
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8 Families<\/div>\n
PE\/PG\/PA\/PN\/PD\/PL+R<\/div>\n<\/div>\n
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6\u20138′<\/div>\n
Terugslag (arcmin)<\/div>\n<\/div>\n
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8\u2013459
\nN\u00b7m<\/div>\n
Uitgangskoppel<\/div>\n<\/div>\n<\/div>\n

\n\u2190 Browse All Planetary Gearbox Series
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Korea Ever-Power Three-Tier Range<\/div>\n
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Precision<\/span> \u2014 AB\/AF\/AFH \u00b7 \u22641\u20135 arcmin \u00b7 up to 3,805 N\u00b7m<\/div>\n
New Line<\/span> \u2014 AH\/AHK \u00b7 1\u20132 arcmin \u00b7 up to 9,585 N\u00b7m<\/div>\n
\u2605 Economic (this series)<\/span> \u2014 PE\/PG\/PA\/PN \u00b7 6\u20138 arcmin \u00b7 up to 459 N\u00b7m<\/div>\n<\/div>\n<\/div>\n

The Korea Ever-Power Economic Line planetary gearbox family<\/strong> serves the large segment of Korean machine applications where angular backlash of 6 to 8 arcmin is perfectly adequate \u2014 conveyor systems, agitator drives, packaging machine auxiliary axes, material handling actuators, and general automation where a stepper motor or standard induction motor is the drive source. Eight product families address different output interface requirements within the 8 N\u00b7m to 459 N\u00b7m torque range, from the standard PE II inline series through the PN II micro series to the ISO 9409 flange PD series and the timing belt pre-configured PL series.<\/p>\n

Economic Line products are not appropriate for closed-loop servo axes requiring sub-5-arcmin positioning, for precision register control, or for any application where backlash directly affects the quality of the output \u2014 for those applications, the Precision Line is the correct choice. Economic Line is the correct choice when the function of the gearbox is speed reduction and torque multiplication in a general-purpose drive, not precision positioning.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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When to Specify Economic Line \u2014 and When Not To<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n
Application Criterion<\/th>\n\u2192 Economic Line \u2605<\/th>\n\u2192 Precision Line<\/th>\n<\/tr>\n<\/thead>\n
Backlash requirement<\/td>\n6\u201312 arcmin acceptable<\/td>\n\u22645 arcmin required (P2 or tighter)<\/td>\n<\/tr>\n
Motor type<\/td>\nStepper, induction, or light-duty servo<\/td>\nPrecision servo with encoder feedback<\/td>\n<\/tr>\n
Application type<\/td>\nConveyor, agitator, general actuator, material handling<\/td>\nPrecision positioning, register control, servo axis<\/td>\n<\/tr>\n
Cost priority<\/td>\nLowest BOM cost is primary driver<\/td>\nPerformance specification is primary driver<\/td>\n<\/tr>\n
Position feedback<\/td>\nOpen-loop or coarse position<\/td>\nClosed-loop precision encoder<\/td>\n<\/tr>\n
Temp \/ IP<\/td>\nIdentical \u2014 \u221210 to +90 \u00b0C \u00b7 IP65 in both tiers<\/td>\n<\/tr>\n
Max torque<\/td>\n459 N\u00b7m maximum<\/td>\nUp to 3,805 N\u00b7m (precision series)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\u25b8 The correct use of Economic Line: <\/span>
\nEconomic Line is not a compromise on the precision series \u2014 it is the right product for its application class. A conveyor drive motor does not benefit from P0 \u22641 arcmin backlash; specifying Precision Line for a conveyor is over-engineering at unnecessary cost. Conversely, specifying Economic Line for a CNC axis register drive is under-engineering that will produce unacceptable position error. Know which class your application belongs to and specify accordingly.<\/span><\/div>\n<\/section>\n

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Eight Product Families \u2014 Covering Every Economic Line Interface Need<\/h2>\n

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Inline (Coaxial) Standard Series<\/h3>\n
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PE II<\/h4>\n
PEII050 \/ 070 \/ 090 \/ 120 \/ 155<\/div>\n

Standard economic inline series. Five frame sizes 50\u2013155 mm body diameter. Square flange, solid output shaft. The most widely specified Economic Line product for Korean general automation and packaging machine auxiliary drives.<\/p>\n<\/div>\n

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PG II<\/h4>\n
PGII040 \/ 060 \/ 080 \/ 120 \/ 160<\/div>\n

Widest ratio coverage \u2014 the only Economic Line inline series with a three-stage configuration reaching 120:1 to 1,000:1. Also the largest frame (160 mm) in the Economic Line inline range. Choose PG II when three stages or extreme ratios are required at economic cost.<\/p>\n<\/div>\n

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PA II<\/h4>\n
PAII042 \/ 060 \/ 090 \/ 115 \/ 142<\/div>\n

Precision series frame scale \u2014 the PA II body diameters match those of the EP-AB precision series<\/a> (042\/060\/090\/115\/142). Korean OEMs who need to offer both an Economic Line and a Precision Line option for the same machine interface use PA II for the economic variant without changing the motor adapter or mounting pocket dimensions.<\/p>\n<\/div>\n

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PS II<\/h4>\n
Standard frame range<\/div>\n

Standard Economic Line inline series, covering the common 3\/4\/5\/7\/10 single-stage and 15\u2013100 two-stage ratio set. Consult Korea Ever-Power for specific frame dimensions and motor adapter availability for PS II in your machine design.<\/p>\n<\/div>\n

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PN II \u2014 Micro Series<\/h4>\n
PNII017 \/ 023 \/ 034 \/ 042 \/ 056<\/div>\n

The smallest frame in the Economic Line \u2014 body diameters from 17 mm to 56 mm. For Korean micro-automation, laboratory equipment, and small-format machine drives where the motor is compact and the available installation space is tightly constrained. PN II 017 at 17 mm body is the smallest planetary gearbox in the Korea Ever-Power catalogue.<\/p>\n<\/div>\n<\/div>\n

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Right-Angle Series (R Suffix)<\/h3>\n
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Each Economic Line inline series has a corresponding right-angle variant \u2014 PE II R, PG II R, PA II R, PS II R, and PN II R \u2014 providing 90-degree output direction change at the same economic cost positioning. The right-angle versions carry slightly wider backlash (10\u201312 arcmin single-stage vs 6\u20138 arcmin inline) due to the added bevel-stage contribution, and slightly lower efficiency (\u226593% single-stage vs \u226597% inline).<\/p>\n

\n\n\n\n\n\n\n\n\n
Right-Angle Series<\/th>\nBacklash (1-stage)<\/th>\nEfficiency (1-stage)<\/th>\nSpecial note<\/th>\n<\/tr>\n<\/thead>\n
PE II R<\/td>\n10\u201312 arcmin<\/td>\n\u226593%<\/td>\nStandard right-angle economic inline<\/td>\n<\/tr>\n
PG II R<\/td>\n10\u201312 arcmin<\/td>\n\u226593%<\/td>\n3-stage available (\u22641,000:1); 2-stage includes i=81<\/td>\n<\/tr>\n
PA II R<\/td>\n10\u201312 arcmin<\/td>\n\u226593%<\/td>\nAB precision frame scale \u2014 economic right-angle<\/td>\n<\/tr>\n
PS II R \/ PN II R<\/td>\n10\u201312 arcmin<\/td>\n\u226593%<\/td>\nStandard and micro right-angle variants<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

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Special Interface Series \u2014 ISO 9409 and Timing Belt Pre-Configured<\/h3>\n
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PD \/ PDR \u2014 ISO 9409 Flange<\/h4>\n
PD053\/064\/090\/110 \u00b7 PDR053\/064\/090\/110<\/div>\n

The PD and PDR series use an ISO 9409 output flange \u2014 the international standard mounting flange common on rotary tables, indexers, and international machine tool components. Korean manufacturers integrating with international machine platforms that specify ISO 9409 flange mating specify PD\/PDR for dimensional compatibility without custom adapter design.<\/p>\n

PD: inline \u00b7 PDR: right-angle \u00b7 Both: ISO 9409 flange \u00b7 Backlash 6\u201312′ (1-stage)<\/div>\n<\/div>\n
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PL \/ PLR \u2014 Timing Belt Pulley Pre-Configured<\/h4>\n
PL070\/090\/120 \u00b7 PLR070\/090\/120<\/div>\n

PL and PLR gearboxes come pre-configured with a timing belt pulley already installed on the output shaft \u2014 the motor and the PL gearbox form a direct belt-drive unit without additional pulley installation or alignment. For Korean machine builders building standard belt-driven axes at volume, PL eliminates the pulley installation step from the assembly process.<\/p>\n

PL: inline \u00b7 PLR: right-angle \u00b7 Both: output pulley pre-mounted \u00b7 Same PD specification<\/div>\n<\/div>\n<\/div>\n<\/section>\n

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Economic Line \u2014 Specifications at a Glance<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n
Series<\/th>\nOutput<\/th>\nTorque<\/th>\nBacklash 1-stage<\/th>\nMax Ratio<\/th>\nEfficiency 1-stage<\/th>\nSpecial<\/th>\n<\/tr>\n<\/thead>\n
PE II<\/td>\nInline<\/td>\n8\u2013459 N\u00b7m<\/td>\n6\u20138′<\/td>\n100:1<\/td>\n\u226597%<\/td>\nStandard<\/td>\n<\/tr>\n
PG II<\/td>\nInline<\/td>\n8\u2013459 N\u00b7m<\/td>\n6\u20138′<\/td>\n1,000:1 (3-stage)<\/td>\n\u226597%<\/td>\n3-stage; largest frame 160 mm<\/td>\n<\/tr>\n
PA II<\/td>\nInline<\/td>\n8\u2013459 N\u00b7m<\/td>\n6\u20138′<\/td>\n100:1<\/td>\n\u226597%<\/td>\nAB scale: 042\/060\/090\/115\/142<\/td>\n<\/tr>\n
PS II<\/td>\nInline<\/td>\n8\u2013459 N\u00b7m<\/td>\n6\u20138′<\/td>\n100:1<\/td>\n\u226597%<\/td>\nStandard variant<\/td>\n<\/tr>\n
PN II<\/td>\nInline<\/td>\n8\u2013459 N\u00b7m<\/td>\n6\u20138′<\/td>\n100:1<\/td>\n\u226597%<\/td>\nMicro: 017\/023\/034\/042\/056 mm<\/td>\n<\/tr>\n
R variants<\/td>\n90\u00b0 R\/A<\/td>\n8\u2013459 N\u00b7m<\/td>\n10\u201312′<\/td>\n1,000:1 (PGIIR)<\/td>\n\u226593%<\/td>\nAll 5 inline families have R variants<\/td>\n<\/tr>\n
PD \/ PDR<\/td>\nInline \/ R\/A<\/td>\n8\u2013459 N\u00b7m<\/td>\n6\u201312′<\/td>\n100:1<\/td>\n93\u201397%<\/td>\nISO 9409 output flange<\/td>\n<\/tr>\n
PL \/ PLR<\/td>\nInline \/ R\/A<\/td>\n8\u2013459 N\u00b7m<\/td>\nSame as PD<\/td>\n100:1<\/td>\nSame as PD<\/td>\nTiming belt pulley pre-mounted<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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\n\n\n\n\n\n\n\n\n\n
Common Specifications \u2014 All Economic Line Series<\/th>\n<\/tr>\n<\/thead>\n
Single-Stage Ratios<\/td>\n3, 4, 5, 7, 10 (no 6, 8, 9)<\/td>\n<\/tr>\n
Two-Stage Ratios<\/td>\n15 \/ 20 \/ 25 \/ 35 \/ 40 \/ 50 \/ 70 \/ 100 (and i=81 in R series)<\/td>\n<\/tr>\n
Bedrijfstemperatuur<\/td>\n\u221210 \u00b0C to +90 \u00b0C<\/td>\n<\/tr>\n
IP Rating<\/td>\nIP65 standard<\/td>\n<\/tr>\n
Precision grade codes<\/td>\nNone \u2014 Economic Line does not use P0\/P1\/P2. Backlash is a fixed specification per series.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n

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Applications \u2014 General Automation in Korean Industry<\/h2>\n
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Conveyor and Material Handling \u2014 PE II \/ PG II, Stepper or Induction Motor<\/h3>\n

Korean general manufacturing conveyor systems \u2014 parts washing conveyors, component transfer belts, pallet indexers, small parts accumulation conveyors \u2014 pair with PE II or PG II Economic Line gearboxes driving standard induction or stepper motors. The 6 to 8 arcmin backlash of Economic Line has no functional impact on conveyor speed control; a conveyor does not reverse-load the gearbox in a way that makes backlash visible in the output. PE II 050 through PE II 120 cover the torque range of most Korean general factory conveyor head drives at economic cost. Pairs with CV joint drive shafts for conveyor shaft offset connections.<\/p>\n<\/div>\n

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Agitator and Mixer Drives \u2014 PG II 3-Stage for High Ratio<\/h3>\n

Korean industrial mixing and agitation equipment \u2014 chemical mixing tanks, paint agitators, food blending systems, adhesive preparation systems \u2014 use PG II three-stage configurations for very slow agitator shaft speeds (1\u201310 rpm) from standard induction motors. The PG II’s three-stage reach to 1,000:1 is unique in the Economic Line and directly serves large-ratio industrial agitator applications. Agitator fluid resistance acts as a load on the output shaft; the 6 to 8 arcmin backlash is entirely irrelevant to agitator shaft rotation speed control.<\/p>\n<\/div>\n

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Packaging Machine Auxiliary Axes \u2014 PA II for Precision-Line Motor Adapters<\/h3>\n

Korean packaging machine builders designing cost-tiered product lines use PA II for lower-specification axes on the same machine where higher-specification axes use EP-AB Precision Line. Because PA II uses identical body diameters to EP-AB (042\/060\/090\/115\/142), the motor adapter and machine cavity pocket are shared between the PA II economic axis and the EP-AB precision axis \u2014 different specification, same installation interface. This allows a single machine design to support both an economic market version and a precision market version with one set of mechanical drawings.<\/p>\n<\/div>\n

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Micro Automation \u2014 PN II at 17\u201356 mm Body<\/h3>\n

Korean medical device testing equipment, laboratory automation, small-format inspection machines, and miniature material handling systems requiring compact gearboxes with modest torque outputs use PN II micro series. The PN II 017 at 17 mm body diameter is the smallest planetary gearbox in the Korea Ever-Power range, making it applicable to space-constrained precision instruments that do not require sub-5 arcmin backlash \u2014 laboratory sample transport, medical device positioning, and optical equipment focus drives at light torque outputs.<\/p>\n<\/div>\n

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International Platform Integration \u2014 PD ISO 9409 Flange<\/h3>\n

Korean machine builders integrating with European or international machine tool platforms that specify ISO 9409 rotary table and indexer flanges use PD for dimensional compatibility without custom adapter design. The ISO 9409 flange of PD matches the international standard bolt pattern and pilot diameter, allowing direct installation into existing machine tool rotary positions designed around the international standard. PD PDR right-angle covers the same interface requirement when a perpendicular motor mounting is required.<\/p>\n<\/div>\n

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Agricultural Machinery and Outdoor Equipment \u2014 Cold Temperature Range<\/h3>\n

Korean agricultural machinery and outdoor industrial equipment requiring a low-cost gearbox for auxiliary functions \u2014 seed metering drives, spreader rate control, outdoor conveyor head drives on seasonal equipment \u2014 benefits from Economic Line’s \u221210 \u00b0C lower temperature limit, which covers Korean outdoor early-spring and late-autumn field temperatures. Combined with agricultural bevel gearboxes for multi-output distribution, Economic Line provides the cost-appropriate primary reduction stage for Korean field machinery.<\/p>\n<\/div>\n<\/div>\n<\/section>\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