Raised Key Key-Bar Pneumatic Shaft

Product Features

• Secure Core Locking：The mechanical keys dig into the inside of your cardboard or plastic core, providing a solid grip that ensures your reels don't slip mid-run when things start spinning fast.
• Fast Core Locking and Release：You just hook up your shop air line and inflate the bladders to secure a new reel, or drop the pressure to slide an empty core off in just a few seconds, which helps trim down your slow changeover times.
• Tweak the Dimensions Your Way：You aren't stuck with one standard size. We can customize the body lengths, diameter specs, and even the key arrangement running down the tube to match your exact machinery setups, so the shaft slides right into your bearings without a hitch.
• Tough Steel Build for Heavy Rolls：We machine these shafts from high-strength steel so they have the structural muscle to handle massive web weights and continuous industrial abuse without bending or flexing under load.
• Zero Drama Maintenance Routine：Standardized internal parts and a flexible frame layout mean that if a bladder eventually wears down, teardowns and seal replacements are pretty straightforward tasks that won't bog down your mechanics.
• Smart For Your Budget：The combination of reliable performance, practical design, and long service life means it delivers exactly what you need for everyday roll processing without overcomplicating things or breaking the bank.

Product Applications

You will see these keyed expansion bars running all over the place on automated production floors where accurate web tracking and reliable core clamping are the main priorities:

• High-Speed Printing Equipment

Installed on press lines to help operators stage up wide paper, vinyl, or packaging reels quickly, ensuring everything stays locked tight during high-speed ink runs.

• Rewinding Stations

A practical choice for fast-moving rewinders where you are constantly pulling completed rolls off and need a mandrel that grabs the new core right away.

• Industrial Slitting Machinery

Applied across slitting equipment to provide heavy roll support and keep your material ribbons from walking sideways while the knives are working.

• Heavy-Duty Paper Mills

Drop them deep inside papermaking systems that handle massive, oversized web weights all day long and need a core holder that won't wimp out.