Description
The Schwan ratchet with 72 teeth is a ratchet with a 1/2 inch square drive for use with sockets. The ratchet mechanism has 72 teeth, so the swing arc per tooth is 5 degrees. The small swing arc solves tight installation spots where the handle can only be moved a few degrees at a time.
The shaft is made of chrome vanadium steel and chrome-plated. Chrome vanadium is an alloy steel that withstands torque loads without yielding, and the chrome plating protects against corrosion and makes it easier to wipe off oil and grease. At the end of the ratchet there is a direction lever for switching between tightening and loosening without removing the socket from the nut.
The square drive has a quick-release button on the top of the ratchet head. Pressing the button releases the socket from the square drive without having to pull it off; without a quick release, a socket that has become stuck is removed by twisting, which wears the ball in the square drive.
The handle is two-component: the hard plastic body carries the torque, and the soft grooved surface material gives a secure grip even with greasy hands. There is a hanging hole at the end of the handle for storage.
Uses and suitability:
The ratchet tightens and loosens screw and nut connections that fit 1/2 inch sockets. The 72-tooth mechanism is intended for places where there is little room to move.
- Tight installation spots: a 5-degree swing arc is enough to move one tooth when structures prevent the handle from moving further.
- Vehicle and machine maintenance: 1/2 inch socket sizes cover the larger bolts and nuts on the chassis and engine.
- Steel structures and installations: tightening and loosening bolted joints in structures and machine installations.
- With extension bars and universal joints: the 1/2 inch square drive takes extension bars, universal joints and adapters.
- Repeated connections: the direction lever speeds up work when the same connection is loosened and tightened several times.
Package contents:
- 1 pcs ratchet 1/2″, 72 teeth, two-component handle
Features:
- 72 teeth: swing arc 5 degrees, works in tight spots.
- 1/2 inch square drive: compatible with standard 1/2″ sockets, extension bars and adapters.
- Quick-release button: the socket comes off at the press of a button without twisting.
- Direction lever: switches between tightening and loosening without removing the socket.
- Chrome vanadium steel: withstands torque loads without yielding.
- Chrome plating: protects against corrosion and makes cleaning easier.
- Two-component handle: hard body and soft grooved surface, secure grip even with greasy hands.
- Hanging hole at the end of the handle.
Technical specifications:
- Drive: 1/2″ square drive.
- Teeth: 72.
- Swing arc: 5 degrees.
- Material: chrome vanadium steel (Cr-V).
- Finish: chrome.
- Handle: two-component plastic, grooved soft surface layer.
- Quick release: release button on the ratchet head.
- Direction change: lever on the ratchet head.
Schwan ratchet with 72 teeth instructions for use:
Fitting and removing the socket: Press the socket onto the square drive until the locking ball clicks into the groove. To remove it, press the release button on the ratchet head and pull the socket off.
Choosing the direction: Turn the direction lever to the tightening or loosening position before applying load. Do not turn the lever under load; the mechanism does not move from one tooth to the next under load.
Turning: Hold the end of the handle, so that the lever arm is at its longest and the force is spread evenly over the ratchet. Pull the handle, do not push it: pulling is the more controlled movement if the socket comes off. Turn evenly without jerking.
Torque: Use a torque wrench when a tightening torque has been specified for the connection. A ratchet cannot measure torque.
Care: Wipe the ratchet after use and remove grease and dirt from the gaps in the ratchet head. Lubricate the mechanism with thin machine oil if the ratchet starts to click unevenly. Store in a dry place.
Warnings:
- Do not extend the handle with a pipe: the ratchet mechanism is designed for the torque that matches the length of the handle, and overloading breaks the teeth.
- Do not use impact sockets or impact work with the ratchet; the ratchet does not withstand impact loads.
- Do not turn the direction lever under load.
- Check that the socket has locked onto the square drive before turning: a socket that comes off falls, and your hand strikes the structure.
- Wear safety glasses; a rusted nut or socket can break.
- Working with a worn or cracked socket rounds off the corners of the nut and causes the grip to fail.
- Keep out of the reach of children.
Frequently asked questions (FAQ):
What do 72 teeth mean in practice? The ratchet moves one tooth with a 5-degree swing. The more teeth, the smaller the movement needed, which is important in tight spots. For comparison, a 36-tooth ratchet needs a 10-degree swing.
Is the 1/2 inch ratchet suitable for impact sockets? Impact sockets can be fitted mechanically, but the ratchet must not be used for impact work. Impact sockets are intended for impact wrenches.
Can the ratchet be used to tighten to a torque? No. A ratchet does not measure torque; connections that are tightened to a torque are tightened with a torque wrench.
What does the quick-release button do? It releases the locking ball in the square drive, so the socket comes off at the press of a button and does not have to be pulled or twisted off.
Why does the ratchet slip under load? The most common reasons are dirt in the mechanism, worn teeth or the direction lever being left in an intermediate position. Clean and lubricate the mechanism and make sure the lever is fully in its end position.
Recycling instructions:
Take a ratchet that is no longer used to metal collection; the plastic handle does not need to be removed, as it is separated in the metal recycling process. Oily wipes and used lubricating oil go to hazardous waste collection. Sort cardboard and plastic packaging into their own collections.
