Small Linear Actuator 100 mm Stroke

The small linear actuator 100 mm stroke is chosen where the movement is an access movement, not an indexing one. A panel has to clear gasket compression, the overlap behind the weather hood and its own keyhole slots before a technician can reach the terminals - 70 to 95 mm in most cabinets. At 50 mm the slots are still engaged and the last 40 mm is lifted by hand, which is the motion the actuator was fitted to remove.

In place it does that travel without an air line, a brake or a standby draw. Panel weight stays with the hinge; the rod presses the gasket back into contact, breaks the panel off a gasket that has taken a set, and starts the lift. The tube sits behind the same skin as the terminals, and the pace is set for a panel opened a few times a shift rather than for a production cycle.

• 100 mm service travel - gasket, hood overlap and keyhole slots cleared in one pass, with no second lift by hand.
• 200 N push and pull - an 8–12 kg panel needs 90–150 N to start, so the margin covers a stiff foam gasket.
• 300 N self-locking - the copper alloy gear train holds with the supply off, at no standby current. A static hold, not a prop.
• 2 mm/s under load - 100 mm in about 50 seconds; 3 mm/s unloaded returns in about 33.
• Ø16 mm 304 stainless tube - clamps at any point on its outside diameter, with no coating edge to chip.
• IP65 - one circular seal at each end and a wiped rod, with no bellows to tear.
• −40 °C to +65 °C - shares the compartment with the terminals; condensation is the condition that matters.
• 10% duty, 0.32 A limit - two openings a day sit far inside the rating, and a jam cuts before the winding heats.

A front service panel on a DC fast charger or a battery energy storage cabinet is a flat pressing with a gasket round its edge, two keyhole slots at the top and two quarter-turn fasteners at the bottom. Release the fasteners and the panel lifts until the slot heads clear; it then hangs forward on the slots, or comes off onto its hooks. The lift is the only driven part of that sequence, and it breaks into four components:

The four add up to 61–100 mm, 70–95 on a typical cabinet. This is why the stroke exists in the series: a 50 mm variant seals and clears the lip but leaves the slots engaged, so the last 40 mm stays manual.

Two checks before the stroke is fixed. Force: a 9 kg panel with its centre of gravity 250 mm from the top hinge, driven 200 mm from it, asks for about 110 N at the start of the lift, and 200 N leaves margin for gasket breakout and slot friction. Guidance: the slots and the hinge have to keep the lift straight, because the rod pushes on one line and a panel that racks sideways loads the front bearing on a direction it was not sized for.

Two numbers decide whether anything upstream has to change. Current draw stays under the 0.32 A cut-off, so a 24 V rail sees less than 8 W from the actuator - it can share the supply that already runs the controller, the meter or the door lock, without a dedicated converter. Duty is the other: 10% means 50 seconds of travel, then at least seven and a half minutes at rest. Two openings a day is 100 seconds of running time in 24 hours, against a rating that allows 10% of any window. The figure only starts to matter when a unit is cycled continuously on a test bench.

The closing sequence deserves the same attention as the opening one. Size the stroke so the panel meets its frame a few millimetres before the rod reaches the end of travel. The gasket is then compressed by the last part of the stroke and the board stops the rod on position. Size it long and the panel hits the frame early every cycle, the current climbs into the limit and the board ends the stroke on current instead - a gasket that is over-compressed and a board that works harder than it should. Size it short and the gasket never seals.

Travel and installed length move together on this platform: the body adds a fixed 99.2 mm to the stroke. That puts the 100 mm variant at 199.2 mm retracted and 299.2 mm extended, 70 mm longer at both ends than the 30 mm build (129.2 / 159.2 mm). Confirm on the 100 mm drawing before a pocket or bracket is cut.

Seventy millimetres is the price of the longest stroke, and where it goes decides whether the panel can stay as it is:

Before choosing, measure the space the panel occupies when it is open, not when it is closed. On most cabinets the closed envelope is generous and the open one is where the tube and its lead collide with a door, a cable tray or the technician's forearm.

✓ fits as drawn △ confirm the margin ✗ travel short or excessive

The plant works to ISO9001. Each unit is loaded to its rated force before it is boxed - there is no sample-based release, so a unit that fails never reaches a carton. CE and RoHS paperwork and the quality certificate sit on the certification page; the load and life rigs behind those figures are shown under testing equipment; the plant itself is described under about us and why us. Warranty is six months and covers manufacturing and material defects only. For other body diameters, supply voltages and force classes, see the full actuator range; for selection by machine type, see applications.

Please include:

• Stroke length and quantity
• Panel or cover weight, and the lift it has to make
• Cycles per day, and how long the panel stays open
• Ambient conditions at the cabinet: dust, water, temperature range
• The space available for the retracted unit and for the lead exit

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