{"id":591,"date":"2026-05-28T05:26:01","date_gmt":"2026-05-28T05:26:01","guid":{"rendered":"https:\/\/planetary-gearboxes.com\/?post_type=product&p=591"},"modified":"2026-05-28T05:26:01","modified_gmt":"2026-05-28T05:26:01","slug":"ep-abr-right-angle-square-flange-planetary-gearbox","status":"publish","type":"product","link":"https:\/\/planetary-gearboxes.com\/es\/producto\/ep-abr-right-angle-square-flange-planetary-gearbox\/","title":{"rendered":"Reductor planetario de precisi\u00f3n con brida cuadrada en \u00e1ngulo recto de la serie EP-ABR (EP-ABR042 a EP-ABR220)"},"content":{"rendered":"

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

EP-ABR Series \u2014 Right-Angle Square Flange Precision Planetary Gearbox<\/h2>\n
\n
\n

\"EP-ABR<\/p>\n

\n
\n
90\u00b0
\nOutput<\/div>\n
Right-angle direction<\/div>\n<\/div>\n
\n
\u22641′<\/div>\n
Backlash P0 (arcmin)<\/div>\n<\/div>\n
\n
\u226597%<\/div>\n
Single-Stage Efficiency<\/div>\n<\/div>\n
\n
Square
\nFlange<\/div>\n
Same as EP-AB<\/div>\n<\/div>\n<\/div>\n

\n\u2190 Browse All Planetary Gearbox Series
\n<\/a><\/div>\n<\/div>\n
\n
\n
\u2605 90\u00b0 Output \u2014 Same P0\/P1\/P2 Backlash as the Inline EP-AB Series<\/div>\n

EP-ABR changes the output direction by 90 degrees while maintaining the same P0 \u22641 arcmin, P1 \u22643 arcmin, and P2 \u22645 arcmin backlash grades as the EP-AB inline series<\/a>. The bevel-stage contribution to backlash is already included in these specifications \u2014 no separate bevel gearbox, no added backlash accumulation.<\/p>\n<\/div>\n

The EP-ABR series right-angle square flange planetary gearbox<\/strong> is the direct 90-degree output version of the EP-AB inline series. It delivers the same eleven frame sizes, the same complete single-stage ratio set from i=3 to i=10, the same full two-stage range from i=12 to i=100 across 17 values, and the same three backlash grades \u2014 all with the output shaft perpendicular to the motor input axis. The right-angle direction change is built into the single gearbox housing; the machine designer gains a 90-degree output without adding a separate bevel gearbox, without accumulating additional backlash, and without introducing a second sealed-grease lubrication unit into the drive train.<\/p>\n

The square output flange matches the bolt-circle and pilot diameter of the EP-AB series at each frame size, retaining the same flat-surface mounting interface for machine beds and gearbox plates. Output torque spans 14 N\u00b7m at EP-ABR042 to 2,000 N\u00b7m at EP-ABR220, with single-stage efficiency \u226597%, \u221210 \u00b0C to +90 \u00b0C operating range, and IP65 dust and water jet protection as standard.<\/p>\n

\n
\n
\ud83d\udd04 Integrated 90\u00b0<\/div>\n
One unit \u2014 motor-input to 90\u00b0 output. No added bevel stage.<\/div>\n<\/div>\n
\n
\ud83d\udcd0 P0\/P1\/P2 Grades<\/div>\n
Bevel stage already accounted for \u2014 no backlash penalty.<\/div>\n<\/div>\n
\n
\ud83d\udd32 Square Flange<\/div>\n
Same flat mounting geometry as EP-AB at every frame size.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

<\/p>\n

\n

The Right-Angle Output \u2014 When the Machine Layout Makes 90\u00b0 the Correct Choice<\/h2>\n
\n

<\/p>\n

\n
\n

INLINE LAYOUT \u2014 EP-AB<\/p>\n

\u2190 Motor axial length \u2192
\n[Motor]\u2500\u2500[Gearbox]\u2500\u2500\u25b6 Load
\nTotal axial = Motor + Gearbox<\/div>\n

RIGHT-ANGLE LAYOUT \u2014 EP-ABR<\/p>\n

[Motor]\u2500\u2500[Gearbox]
\n\u2502
\n\u25bc Load (90\u00b0 turn)
\nMotor axial space saved<\/div>\n
EP-ABR eliminates the motor axial extension in the output direction \u2014 the motor sits perpendicular to the driven axis<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

\n

Three Machine Layout Problems EP-ABR Solves<\/h3>\n
\n
\n

\u2460 Limited Axial Depth \u2014 Motor Behind the Output Axis<\/strong><\/p>\n

When the load axis runs along a machine bed and there is insufficient axial clearance behind the driven component for a motor-plus-inline-gearbox assembly, EP-ABR redirects the motor input to a perpendicular plane. The motor and EP-ABR sit beside the machine axis rather than behind it \u2014 the axial space behind the driven component can now accommodate travel limits, sensors, or an adjacent station.<\/p>\n<\/div>\n

\n

\u2461 Horizontal Motor Driving a Vertical Output Axis<\/strong><\/p>\n

Vertical axis drives \u2014 vertical column positioners, Z-axis elevators, vertical rotary tables with a horizontal motor \u2014 require a 90-degree direction change between the horizontal motor shaft and the vertical output shaft. EP-ABR integrates this change within the gearbox; no additional bevel pair is needed between the motor and the vertical load. This removes one sealing joint, one lubrication compartment, and one potential backlash source from the drive train.<\/p>\n<\/div>\n

\n

\u2462 Machine Aesthetic and Cabinet Envelope Constraints<\/strong><\/p>\n

For Korean collaborative robot bases, compact automation cells, and OEM equipment where the machine envelope must remain within a defined footprint regardless of servo motor position, the right-angle layout allows the motor to be tucked inside the machine base perpendicular to the output axis \u2014 keeping the machine profile clean and within the specified cabinet dimensions without performance compromise.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

EP-ABR vs EP-AB + External Bevel Gearbox \u2014 Why One Unit Is Better<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n
Criterion<\/th>\nEP-ABR \u2605 (integrated)<\/th>\nEP-AB + external bevel<\/th>\n<\/tr>\n<\/thead>\n
Number of drive components<\/td>\n1 \u2014 single unit<\/td>\n2 \u2014 gearbox + bevel stage<\/td>\n<\/tr>\n
Total system backlash<\/td>\nP0\/P1\/P2 \u2014 bevel already included<\/td>\nPlanetary backlash + bevel backlash (accumulated)<\/td>\n<\/tr>\n
Lubrication systems<\/td>\n1 \u2014 sealed grease, no maintenance<\/td>\n2 \u2014 planetary + separate bevel grease<\/td>\n<\/tr>\n
IP protection<\/td>\nIP65 \u2014 single sealed housing<\/td>\nTwo housing joints to seal; bevel may be lower spec<\/td>\n<\/tr>\n
Motor adapter compatibility<\/td>\nStandard Korea Ever-Power servo adapter<\/td>\nAdapter for planetary; bevel needs separate input coupling<\/td>\n<\/tr>\n
Installed length (motor axis)<\/td>\nMotor + gearbox only<\/td>\nMotor + planetary + bevel housing + couplings<\/td>\n<\/tr>\n
Ratio availability<\/td>\nIdentical: single i=3\u201310, two-stage i=12\u2013100<\/td>\n<\/tr>\n
Efficiency \/ Temperature<\/td>\nEP-ABR \u226597% single; external bevel adds its own loss<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\u25b8 The backlash point is critical: <\/span>
\nWhen you add an external bevel stage after an EP-AB, the total system backlash is the sum of the planetary backlash and the bevel backlash \u2014 even a P0 EP-AB at \u22641 arcmin accumulates additional bevel backlash, potentially exceeding 3 or 5 arcmin total. EP-ABR’s P0\/P1\/P2 specification is the verified total backlash at the output shaft, with the bevel stage contribution already measured and included. You get the same \u22641\/\u22643\/\u22645 arcmin guarantee at the right-angle output that you get at the inline output of EP-AB.<\/span><\/div>\n<\/section>\n

<\/p>\n

\n

EP-ABR042 to EP-ABR220 \u2014 Complete Specifications<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
EP-ABR Specifications<\/th>\n<\/tr>\n<\/thead>\n
Output Torque (T2N)<\/td>\n14 N\u00b7m (ABR042) to 2,000 N\u00b7m (ABR220)<\/td>\n<\/tr>\n
Output Direction<\/td>\n90\u00b0 right-angle to motor input axis<\/td>\n<\/tr>\n
Output Flange<\/td>\nSquare flange \u2014 same geometry as EP-AB at each frame size<\/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>\n3, 4, 5, 6, 7, 8, 9, 10 \u2014 complete set<\/td>\n<\/tr>\n
Two-Stage Ratios<\/td>\n12, 15, 16, 20, 25, 28, 30, 32, 35, 40, 45, 50, 60, 70, 80, 90, 100<\/td>\n<\/tr>\n
Single-Stage Efficiency<\/td>\n\u226597%<\/td>\n<\/tr>\n
Two-Stage Efficiency<\/td>\n\u226594%<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n\u221210 \u00b0C to +90 \u00b0C<\/td>\n<\/tr>\n
IP Rating<\/td>\nIP65 \u2014 single sealed housing covers both planetary and bevel stages<\/td>\n<\/tr>\n
Lubricaci\u00f3n<\/td>\nSealed grease \u2014 one unit, maintenance-free<\/td>\n<\/tr>\n
Frame Sizes<\/td>\nABR042 \/ 060 \/ 060A \/ 090 \/ 090A \/ 115 \/ 115A \/ 142 \/ 142A \/ 180 \/ 220<\/td>\n<\/tr>\n
Output Shaft Options<\/td>\nS1: smooth \u00b7 S2: with keyway<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\u25b8 Frame size note: <\/span>
\nEP-ABR frame numbers (042, 060, 090, 115, 142, 180, 220) match EP-AB frame numbers exactly. The output flange dimensions are the same between ABR and AB at each frame number. However, the overall gearbox body dimensions differ because ABR requires additional housing depth for the bevel stage \u2014 always verify the EP-ABR dimensional drawing for your frame before finalising machine cavity dimensions.<\/span><\/div>\n<\/section>\n

<\/p>\n

\n

Model Designation Guide \u2014 EP-ABR Part Number<\/h2>\n
\n
EP-ABR 090 \/ 20 \/ S2 \/ P1<\/div>\n
\n
\n
EP-ABR<\/div>\n
Korea Ever-Power
\nRight-Angle Square Flange
\nPrecision Inline<\/div>\n<\/div>\n
\n
090<\/div>\n
Body diameter 90 mm
\n(same scale as EP-AB090)<\/div>\n<\/div>\n
\n
20<\/div>\n
Gear ratio i=20:1
\n(two-stage)<\/div>\n<\/div>\n
\n
S2<\/div>\n
Output shaft
\nS1: smooth
\nS2: with keyway<\/div>\n<\/div>\n
\n
P1<\/div>\n
Backlash grade
\nP0 \u22641′ \/ P1 \u22643′
\nP2 \u22645′ (single-stage)<\/div>\n<\/div>\n<\/div>\n<\/div>\n
\u25b8 Output orientation: <\/span>
\nEP-ABR output shaft direction relative to the motor input axis is 90 degrees. The output shaft can be oriented in multiple positions (typically rotatable around the motor axis in defined increments) to suit different machine installation orientations \u2014 specify the required output shaft orientation when ordering. Korea Ever-Power will confirm available orientations for your selected frame size.<\/span><\/div>\n<\/section>\n

<\/p>\n

\n

EP-ABR vs EP-ADR \u2014 Choosing the Right-Angle Flange Geometry<\/h2>\n

Korea Ever-Power offers two right-angle inline planetary gearbox series: EP-ABR with a square output flange and EP-ADR with a round circular output flange. Both deliver 90-degree output direction change with P0\/P1\/P2 backlash grades. The selection between them is determined entirely by the output mounting interface required by the machine design.<\/p>\n

\n
\n
\n
EP-ABR \u2605<\/div>\n
Square Flange Right-Angle<\/div>\n<\/div>\n