NSK UCUP208-109D1 pillow block bearing
- Brand
- NSK
- Category
- Bearing housings
- Subcategory
- Y-bearing unit
- Series
- UCUP2
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Description
NSK UCUP208-109D1 belongs to pillow block bearing, part of our Bearing housings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for UCUP208-109D1 and any equivalents.
The NSK UCUP2 is a mounted unit that pairs a two-bolt pillow block housing with a UC series insert bearing. It supports rotating shafts on a base that sits parallel to the shaft, and it is widely used in conveying, power transmission and process equipment where alignment is simple and the unit must handle minor misalignment.
Reading the code helps you order correctly. UC identifies the insert bearing with set screws, UP the two-bolt pillow block housing, and 2 the size series. Suffixes cover sealing and locking variants: in UCUP201D1, D1 indicates a contact seal version; in UCUP201-008D1, the three digits after the hyphen give the shaft diameter in inches. Other references in the series, such as UCUP202-009D1, UCUP203-011D1 and UCUP204-012D1, follow the same pattern as the shaft size changes. Send the complete part number when you request a quote.
Typical installations include belt conveyors, bucket elevators, mixers, mills, packaging lines and process lines in food, chemical and materials plants. The housing mounts on a horizontal surface, and the insert bearing self-aligns inside it to absorb small misalignments. This design is also useful where lubrication access is limited.
When selecting, check shaft diameter, load type (radial, axial or combined) and environmental conditions. The insert seal determines protection against dust, water and cleaning agents; D1 versions usually use contact seals that retain grease and slow contaminant entry. During mounting, make sure the base seats without distortion, align the holes, and tighten the insert set screws onto the shaft with the correct wrench. Periodic greasing and clearance checks help avoid premature failure.
UCUP2 units are interchangeable with equivalent designs from other brands when the main dimensions match: shaft diameter, hole spacing, height to center and locking type. If you have an unidentified part or a competitor's number, MR can identify the compatible equivalent. The NSK UCUP2 series comes in several sizes and sealing variants, and MR quotes the exact part number or size you specify.
Dimensions
- Bore
- 1-9/16 in
Frequently asked questions
- What does the D1 suffix mean on a UCUP2 pillow block?
- D1 identifies an insert bearing variant with a contact seal, which improves grease retention and protection against dust and moisture. It does not change the housing's main dimensions, but it affects service conditions. For demanding applications, this version is the better choice.
- How do I choose between a pillow block and a flanged housing?
- A pillow block mounts on a surface parallel to the shaft, while a flanged housing mounts on a face perpendicular to it. The decision depends on shaft position and available space. If you send a sketch or photo of the mounting, we can tell you which one applies.
- Are NSK UCUP2 pillow blocks interchangeable with other brands?
- Yes, they are interchangeable with units of equivalent dimensions from other brands, provided the shaft diameter, hole spacing and height to center match. If you bring another brand's part number or an unidentified part, MR can tell you the compatible reference.