UP004C
$6.76
/Each
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QUOTE SUMMARY
Overview |
|
| Part Number | UP004C |
Brand: LILY  |
Interchangeable With: AMI |
| Bearing Part Number | U004 |
| Housing Part Number | P04-5 |
Characteristics |
|
| System of Measurement | Metric |
| Bearing Type | Ball Bearing |
| Bearing Seal Type | Double Sealed |
| Inner Ring Type | Extra Narrow Inner Ring |
| Mounted Type | Pillow Block Bearing |
| Shaft Mount Type | Eccentric Collar Locking |
| Product Series | UP000C |
Dimensions |
|
| Bore Dia | 20 mm |
| Bore Dia Tolerance | -0.0005" to 0" |
| Cover Dia | 45 mm |
| Hole Width | 10 mm |
| Overall Height | 55 mm |
| Pillow Height | 9 mm |
| Center Height | 28 mm |
| Whole Width | 46 mm |
| Whole Length | 100 mm |
| Hole Center to Center 1 | 80 mm |
| Width of Inner Ring | 20 mm |
| Mounting Bolt Size | M8 |
Material |
|
| Bearings Material | AISI 52100 Steel |
| Housing Material | ZDC Alloy |
Performance |
|
| Temperature Range | -30° to 110 °C |
Properties |
|
| RoHS | Compliant |
| REACH | Compliant |
| Lubrication | Required |
| Weight | 0.24 kg |
Shaft retention is achieved through eccentric collar locking in this pillow block bearing unit, which secures the shaft reliably against moderate loads and intermittent vibration — provided the collar is rotated firmly in the direction of shaft rotation and the locking screw is fully tightened — without damaging the shaft surface.
Two M8 bolts fasten the mounted bearing unit to the mounting surface, providing a secure and stable foundation that suits both new installations and direct replacement applications. A light-to-medium duty metric size, commonly paired with small-to-mid-range pillow blocks in general machinery, offering reliable clamping with standard tooling.
Why does this bearing use Eccentric Collar Locking to secure the shaft?
Eccentric collar locking works by rotating an offset collar in the direction of shaft rotation until it clamps firmly around the shaft, which makes it well suited to applications where the shaft surface must remain undamaged and load distribution needs to be more even. Its main advantage over other shaft locking methods is a broader contact area that reduces shaft stress, which matters most when the application involves intermittent loads, frequent starts and stops, or softer shaft materials.How does the M8 affect installation and compatibility?
The bolt size directly determines whether the pillow block bearing can be mounted onto an existing frame or structure without modification. An M8 bolt corresponds to a light-to-medium duty hole pattern common in small metric pillow blocks used across general machinery and light conveyor systems, so when replacing an existing unit, confirming this dimension ensures a drop-in fit. Mismatched bolt sizes may require redrilling the mounting surface or sourcing an adapter plate, adding time and cost to the installation.Recommended Products
