How it connects
Mounts via axial slide-on (slip-fit) over a rotating or stationary spindle/core hub, relying on light radial clearance for free rotation or slight friction/rib engagement to prevent slipping during unrolling.
Male and female halves
Female cylindrical bore of the tape roll core, mating over a male dispenser spindle, core hub, or adapter wheel.
Usually connects to
- tape dispenser spindle
- tape core wheel / insert
- tape gun hub
- mandrel
Common sizes
- Standard nominal inner diameters include 1 inch (25.4 mm) for small office rolls and 3 inches (76.2 mm) for packaging, duct, and industrial tapes; other sizes include 1.5 inch and 6 inch.
Where it is used
packagingoffice suppliesshipping and logisticsmanufacturingtape dispensing tools
Variations
- 1-inch core bore
- 3-inch core bore
- spiral-wound paperboard / cardboard core
- molded plastic core
How to recognise it
Recognised as the smooth cylindrical central hole through the spiral-wound cardboard or plastic core of an adhesive tape roll.
Often confused with
| Confused with | How to tell them apart |
|---|---|
| Tape dispenser spindle/wheel | The spindle/wheel is the male plastic or metal rotating mount; the core bore is the cylindrical internal cavity of the tape roll itself. |
| Cylindrical sleeve bearing | Sleeve bearings are precision-machined mechanical bearings, whereas a tape core bore is a basic cardboard or plastic tube inner diameter. |
Also called
tape core boretape roll inner diameter (ID)tape core IDspindle boretape roll mounting hole
Good to know
Commonly standardized at 1-inch and 3-inch inner diameters across consumer, commercial, and industrial pressure-sensitive tapes.
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