Claw lifter

Version 3 keeps the variable width of V2 (screw, rails and handwheel) but replaces the flat-swinging plates with two claw jaws. Each jaw hangs on a hinge along the server's depth, above the server and 65 mm inside its wall. To open, the jaw turns 25° up and out in an arc; to close, it turns back down and in, and its 10 mm blade slides under the chassis edge almost horizontally. The server then sits on the two blades. Only the two front-to-back straps remain, and the shackle is the larger 1/2″.

Rated load: 250 kg
Lifter mass: – kg
Jaw opening: –°
Reach under edge: – mm

Claw mechanism

The handwheel moves both arms together until the PU bumpers touch the chassis, which puts each hinge 65 mm inside the wall. Each jaw is then turned on its own with its handle. Because the hinge sits above the middle of the blade, the blade leaves and enters from under the chassis almost flat: it rises only about 4 mm. A spring plunger locks the jaw closed or open. With the server's weight near the hinge, the jaw tends to stay shut.

Handwheel turns 0.0

Bumper gap: –
Left jaw: –
Right jaw: –

Hand-lift assumption. Each chassis edge is lifted 10–25 mm by hand while its jaw closes under it. This needs a lifting aid or a team lift before use.

	V1	V2	V3	V4
Lifter mass	123.5 kg	124.8 kg	– kg	37.0 kg
Holds the server by	side friction	plates below	claw jaws below	plates below
Pad motion	clamp	flat swing	arc, up and out	flat swing
Width setting	screw + clutch	screw	screw	fixed
Straps	4	4	2	2
Shackle	3/8″	3/8″	1/2″	1/2″

Operating sequence

Bill of materials