Technical Data  Linear actuator  Power Cylinder  Handling

Maintenance :U Series ・Multi Type

Lubrication on ball screw

Use the ball screw as it is because it has been lubricated with grease in advance. Refill grease with reference to Table 1 and 2 as a guide. To apply grease to the ball screw, remove the greasing port bolt on the outer and extend the rod in the full stroke and apply grease to the outer circumference of the ball screw with a grease gun, and then retract the rod within the stroke to be used. Repeat this operation a few times.

Lubrication on ball screw

Amount of grease per stroke 100mm is approx. 10 to 15g for U6000 and approx. 30 to 35g for U8000 to U32000.

Warning

Never insert your finger into the grease port.
If the cylinder operates with your finger inserted, your finger may be injured.

Table 1 Exclusive grease

Use classification Ball screw
Company name Cosmo Oil Lubricants
Grease name COSMO MOLYBDENUM GREASE SPECIALNo.2

※Grease dedicated to the power cylinder U series. Avoid greasing with other greases.

Warning

Cylinder life will be significantly reduced if lubricated with grease other than the dedicated grease.

Table 2 Lubrication cycle

Frequency of use Lubrication cycle
1001 times/day or more Every 1 to 3 months
501 to 1000 cycles/day Every 3 to 6 months
101 to 500 cycles/day Every 6 months to 1 year
~100 cycles/day or less Every 1 to 1.5 years

※The above values are for longer use, and do not indicate the life.

Greasing on Reduction part

For the gear and the bearing in the reducer part, the gear case is filled with grease. It is not necessary to grease refill. If deterioration of the grease can be observed through the inspection window or grease supply port, replace the grease.

Initial grease filled in reduction part

  • Gear case :DAPHNE EPONEX SR No.1

Inspection location

Inspection location
Warning

Never insert your finger into the grease port.
If the cylinder operates with your finger inserted, your finger may be injured.

Cautions for installation (U Series ・Multi Type )

  • ・Securely carry out centering between the center of the trunnion fitting and the center of the end fitting mount part. Prevent lateral load from acting on the cylinder due to swing particularly when the cylinder operates.
  • ・Coupling is recommended to couple the input shaft and the driving shaft. Use a type of coupling including chain coupling, gear coupling and disk coupling which can absorb misalignment.
  • ・Note that if the floating shaft of the coupling to couple the driving part and cylinders is long, vibration may be generated by its rotation. Consider together with rigidity of the floating shaft and backlash of the coupling.
  • ・All models are totally enclosed structures so that they can be used normally outdoors, however, under adverse conditions exposed to constant water and steam etc., and snow accumulation, although they are an outdoors type, an appropriate cover is required. The power cylinder can generally be used in a range of -15℃ to 60℃, although it varies depending on the use conditions. Never use in flammable environments. There is a risk of explosions and fire hazards. In addition, avoid using it in a location where vibration or shock exceeding 3G is applied.
  • ・Contact us for use in mist-filled atmospheres.

Cautions for use (U Series ・Multi Type )

  • ・Regulate the both ends of the stroke by the limit switch.
    A type of option which allows the limit switch to be mounted on the power cylinder body, which can be selected.
  • ・Use within the stroke range. If the stroke is exceeded, breakage may occur.
  • ・If the power cylinder multi series is used at high speed, since the coasting distance is long, the striker may override the limit switch. For this reason, make sure to allow a limit signal to be self-held on the control circuit.
  • ・Prevention of rod rotation is required as the rod generates the rotational force along with the thrust. The rod rotational force at rated thrust is shown in the standard model list. When operating with the end unconnected or when installing pulleys to pull a rope, contact us since a rod anti-rotation specification is also available.
  • ・Adjustment of the limit switch for thrust detection of the C type must not be carried out by the customer. The preset value of thrust detection may change greatly.