LER Series Electric Rotary Table
Caution
- Refer to the manufacturer's catalog for specification and material details.
- Product images may be representative images. Refer to the manufacturer's catalog for shape details.
- CAD data is not supported for some model numbers.
Product Description
Low-profile rotary actuator.
[Features]
· Positioning repeatability: ±0.03° (high-precision type).
· Rotation angle: 320° (310°), 180°, 90°. *The value in parentheses is for the LER10.
· Shockless / high-speed actuation.
· Possible to set speed, acceleration/deceleration and positioning up to 64 points.
· Energy-saving product: Automatic 40% power reduction after the table has stopped.
· Step motor (servo 24 V DC).
LER Series Electric Rotary Table Specifications
LER Series Electric Rotary Table external appearance
LER: basic type / LERH: high-precision type
External dimensional drawing
(Unit: mm)
LER□10□ (rotation angle: 310°) dimensional drawing
- LER10 / H1: 10 mm, H2: 3.5 mm
- LERH10 / H1: 17 mm, H2: 10.5 mm
LER□10-2 (rotation angle: 180°) / LER□10-3 (rotation angle: 90°) dimensional drawings
- LER10 / H1: 10 mm, H2: 3.5 mm, H3: 9 mm
- LERH10 / H1: 17 mm, H2: 10.5 mm, H3: 16 mm
Specifications / Step Motor (Servo 24 V DC)
| Model | LER□10K | LER□10J | LER□30K | LER□30J | LER□50K | LER□50J | |||
|---|---|---|---|---|---|---|---|---|---|
| Actuator specifications: basic type | Rotation angle (°) | 310 | 320 | ||||||
| Lead (°) | 8 | 12 | 8 | 12 | 7.5 | 12 | |||
| Max. rotating torque (N·m) | 0.32 | 0.22 | 1.2 | 0.8 | 10 | 6.6 | |||
| Max. pushing torque 40 to 50% (N·m)*1 *3 | 0.13 to 0.16 | 0.09 to 0.11 | 0.48 to 0.60 | 0.32 to 0.40 | 4.0 to 5.0 | 2.6 to 3.3 | |||
| Max. moment of inertia (kg·m2)*2 *3 | LECP6/LECP1/LECPMJ JXCE1/91/P1/D1 | 0.0040 | 0.0018 | 0.035 | 0.015 | 0.13 | 0.05 | ||
| LECPA JXC73/83/93 | 0.027 | 0.012 | 0.10 | 0.04 | |||||
| Angular speed (°/sec)*2 *3 | 20 to 280 | 30 to 420 | 20 to 280 | 30 to 420 | 20 to 280 | 30 to 420 | |||
| Pushing speed (°/sec) | 20 | 30 | 20 | 30 | 20 | 30 | |||
| Max. angular acceleration/deceleration (°/sec2)*2 | 3,000 | ||||||||
| Backlash (°) | Basic type | ±0.3 | ±0.2 | ||||||
| High-precision type | ±0.1 | ||||||||
| Positioning repeatability (°) | Basic type | ±0.05 | ±0.05 | ||||||
| High-precision type | ±0.03 | ||||||||
| Lost motion (°)*4 | Basic type | 0.3 or less | 0.3 or less | ||||||
| High-precision type | 0.2 or less | ||||||||
| Impact/vibration resistance (m/s2)*5 | 150/30 | ||||||||
| Actuation type | Special worm gear + belt drive | ||||||||
| Max. operating frequency (c.p.m) | 60 | ||||||||
| Operating temp. range (°C) | 5 to 40 | ||||||||
| Operating humidity range (%RH) | 90 or less (no condensation) | ||||||||
| Weight (kg) | Basic type | 0.49 | 1.1 | 2.2 | |||||
| High-precision type | 0.54 | 1.2 | 2.4 | ||||||
| External stopper type | Rotation angle (°) | -2/arm (1 pc.) | 180 | ||||||
| -3 / arm (2 pcs.) | 90 | ||||||||
| Repeatability at the end (°) / with external stopper | ±0.01 | ||||||||
| External stopper setting range (°) | ±2 | ||||||||
| Weight (kg) | -2 / external arm (1 pc.) | Basic type | 0.55 | 1.2 | 2.5 | ||||
| High-precision type | 0.61 | 1.4 | 2.7 | ||||||
| -3 / external arm (1 pc.) | Basic type | 0.57 | 1.2 | 2.6 | |||||
| High-precision type | 0.63 | 1.4 | 2.8 | ||||||
| Electric specifications | Motor size | □20 | □28 | □42 | |||||
| Motor type | Step motor (servo 24 V DC) | ||||||||
| Encoder | Incremental A/B phase (800 pulse/rotation) | ||||||||
| Power supply (V) | 24 V DC ±10% | ||||||||
| Power consumption (W)*6 | 11 | 22 | 34 | ||||||
| Standby power consumption when operating (W)*7 | 7 | 12 | 13 | ||||||
| Max. instantaneous power consumption (W)*8 | 14 | 42 | 57 | ||||||
*1 Pushing force accuracy is LER10: ±30% (F.S.), LER30: ±25% (F.S.), LER50: ±20% (F.S.).
*2 The angular acceleration, angular deceleration and angular speed may fluctuate due to variations in the moment of inertia. Refer to the "Moment of Inertia—Angular Acceleration/Deceleration, Effective Torque—Angular Speed" graphs on pp. 406 and 407 for confirmation.
*3 The speed and force may change depending on the cable length, load, mounting conditions, etc. Furthermore, if the cable length exceeds 5 m, then the speed and force will decrease by up to 10% for each 5 m. (At 15 m: reduced by up to 20%)
*4 A reference value for correcting an error in reciprocal operation.
*5 Impact resistance: No malfunction occurred when the slide table was tested with a drop tester in both an axial direction and a perpendicular direction to the lead screw. (Test was performed with the actuator in the initial state.)
Vibration resistance: No malfunction occurred in a test ranging from 45 to 2,000 Hz. Test was performed in both an axial direction and a perpendicular direction to the lead screw. (Test was performed with the actuator in the initial state.)
*6 The power consumption (including the controller) is for when the actuator is operating.
*7 The standby power consumption when operating (including the controller) is for when the actuator is stopped in the set position during operation.
*8 The maximum instantaneous power consumption (including the controller) is for when the actuator is operating. This value can be used for the selection of the power supply.
Structure drawing
Table rotation angle range
External stopper: 180°
External stopper: 90°
*The figures show the origin position for each actuator.
*1 Range within which the table can move when it returns to origin. Make sure the workpiece mounted on the table does not interfere with the workpieces and equipment around the table.
*2 Position after return to origin. The position varies depending on whether there is an external stopper.
*3 Element in parentheses applies when the direction of return to origin has changed.
Structure drawing
LER Series Electric Rotary Table structure drawing
External stopper type structure drawing
Basic type structure drawing
High-precision type structure drawing
| No. | Description | Material | Note | |
|---|---|---|---|---|
| 1 | Body | Aluminum alloy | Anodized | |
| 2 | Side plate A | Aluminum alloy | Anodized | |
| 3 | Side plate B | Aluminum alloy | Anodized | |
| 4 | Worm screw | Stainless steel | Heat treated + Specially treated | |
| 5 | Worm wheel | Stainless steel | Heat treated + Specially treated | |
| 6 | Bearing cover | Aluminum alloy | Anodized | |
| 7 | Table | Aluminum alloy | - | |
| 8 | Joint | Stainless steel | - | |
| 9 | Bearing holder | Aluminum alloy | - | |
| 10 | Bearing stopper | Aluminum alloy | - | |
| 11 | Origin bolt | Carbon steel | - | |
| 12 | Pulley A | Aluminum alloy | - | |
| 13 | Pulley B | Aluminum alloy | - | |
| 14 | Grommet | NBR | - | |
| 15 | Motor plate | Carbon steel | - | |
| 16 | Basic type | Deep groove ball bearing | - | - |
| High-precision type | Special ball bearing | - | ||
| 17 | Deep groove ball bearing | - | - | |
| 18 | Deep groove ball bearing | - | - | |
| 19 | Deep groove ball bearing | - | - | |
| 20 | Belt | - | - | |
| 21 | Step motor (servo 24 V DC) | - | - | |
| 22 | Table | Aluminum alloy | Anodized | |
| 23 | Arm | Carbon steel | Heat treated + Electroless nickel treated | |
| 24 | Holder | Aluminum alloy | Anodized | |
| 25 | Adjuster bolt | Carbon steel | Heat treated + Chromate treated | |
Precautions
Design/Selection
- *If the operating conditions involve load fluctuations, ascending/descending movements, or changes in the frictional resistance, ensure that safety measures are in place to prevent injury to the operator or damage to the equipment. Failure to provide such measures could accelerate the operation speed, which may be hazardous to humans, machinery and other equipment.
- *Power failure may result in a decrease in the pushing force; ensure that safety measures are in place to prevent injury to the operator or damage to the equipment. When the product is used for clamping, the clamping force could be decreased due to power failure, potentially creating a hazardous situation in which the workpiece is released.
- *If the operating speed is set too fast and the moment of inertia is too large, the product could be damaged. Set appropriate product operating conditions in accordance with the model selection procedure.
- *If more precise repeatability of the rotation angle is required, use the product with an external stopper (180° ±2°, 90° ±2°) or by directly stopping the workpiece using an external object utilizing the pushing operation.
- *When using the electric rotary table with an external stopper, or by directly stopping the load externally, be sure to set to [Pushing operation]. Also, ensure that the workpiece is not impacted externally during the positioning operation or in the range of positioning operation.
Mounting
- *Do not drop or hit the electric rotary table to avoid scratching and denting the mounting surfaces. Even slight deformation can cause the deterioration of accuracy and operation failure.
- *When mounting the load, tighten the mounting screws within the specified torque range. Tightening the screws with a higher torque than recommended may cause malfunction, while tightening with a lower torque can cause displacement of the mounting position.
- *When mounting the electric rotary table, tighten the mounting screws within the specified torque range. Tightening the screws with a higher torque than recommended may cause malfunction, while tightening with a lower torque can cause displacement of the mounting position.
Mounting the workpiece to the electric rotary table
The load should be mounted to the product by screwing the screw into the female mounting thread. See the table below for appropriate tightening torque and screw length. If the threaded portion is too long, it can interfere with the body and cause a malfunction.
| Model | Screw size | Thread length (mm) | Max. tightening torque (N·m) |
|---|---|---|---|
| LER□10 | M4 × 0.7 | 6 | 1.4 |
| LER□30 | M5 × 0.8 | 8 | 3.0 |
| LER□50 | M6 × 1 | 10 | 5.0 |
- *See the manufacturer's catalog for product information other than the above.
- *Product images are representative images.