UCP Pillow Block Bearing Dimensions (UCP204 to UCP212)

Reference manual hosted for technician access. 1 pages.

Brand

UCP200 series

Equipment

Two-bolt pillow block (plummer block) mounted bearing unit

Document type

Dimensional reference

Revision

JIS / ISO

Issued

2026-06-15

Pages

Format

PDF (application/pdf)

UCP200 series pillow block bearing dimensions: shaft bore, base-to-centre height H, base length L, bolt-hole spacing J, base width A, bolt-hole size and bolt size for units UCP204 through UCP212, with the matching UC insert and P housing numbers. Includes UCP207 (35 mm bore) and the rest of the two-bolt set-screw-locking range. Values recorded from the NTN bearing units dimension table.

UCP pillow block bearing dimensions (UCP204 to UCP212)

A UCP unit pairs a wide-inner-ring insert ball bearing (UC2xx, set-screw locking, spherical outer race) with a two-bolt cast-iron pillow block housing (P2xx). The unit number fixes the shaft bore and the mounting pattern, so a UCP207 from any maker shares the same 35 mm bore, 47.6 mm height to shaft centre, 167 mm base length and 127 mm bolt-hole spacing. The values below are the JIS/ISO-standard nominal dimensions recorded from the NTN bearing units dimension table.

Unit	Bore d (mm)	Height H (mm)	Length L (mm)	Bolt spacing J (mm)	Base width A (mm)	Bolt hole N (mm)	Bolt	Insert / housing
UCP204	20	33.3	127	95	38	13	M10	UC204 / P204
UCP205	25	36.5	140	105	38	13	M10	UC205 / P205
UCP206	30	42.9	165	121	48	17	M14	UC206 / P206
UCP207	35	47.6	167	127	48	17	M14	UC207 / P207
UCP208	40	49.2	184	137	54	17	M14	UC208 / P208
UCP209	45	54	190	146	54	17	M14	UC209 / P209
UCP210	50	57.2	206	159	60	20	M16	UC210 / P210
UCP211	55	63.5	219	171	60	20	M16	UC211 / P211
UCP212	60	69.8	241	184	70	20	M16	UC212 / P212

Each unit takes the matching insert bearing (UC2xx) and housing (P2xx); for example UCP207 = UC207 insert in a P207 housing. Bolt-hole N is the slot width of the elongated base holes, which take the bolt size in the final column.

Reading the dimensions

Bore d — the nominal shaft diameter. The last two digits of the unit number give the bore: 04 = 20 mm, 05 = 25 mm, 06 = 30 mm, 07 = 35 mm, 08 = 40 mm, then 5 mm steps.
Height H — the distance from the mounting base to the centre of the shaft. It sets the shaft line height and must match across all units carrying one shaft.
Length L and width A — the overall base length and base width across the bolt slots; used to lay out the mounting surface.
Bolt spacing J — the centre-to-centre distance between the two base bolt holes, along the shaft axis.
Bolt hole N — the width of the elongated (slotted) base holes, which allow belt-tension or alignment adjustment; the listed bolt size is the largest that fits.

Selecting and ordering

Specify the unit by shaft bore first (for example UCP207 for a 35 mm shaft), then confirm the height H and bolt spacing J against the existing mounting if you are replacing a unit. The standard UC insert locks to the shaft with two grub (set) screws on the extended inner ring; eccentric-collar and taper-adapter variants share the same housing dimensions but lock differently. The housing is grey cast iron as standard; cast steel, stainless and thermoplastic housings to the same mounting pattern are available where the duty needs them.

Dimensions are nominal JIS/ISO values and provided for identification and cross-reference. Confirm against the controlling standard and the specific bearing maker’s current data sheet before manufacture or procurement.

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Reference compiled for identification and cross-reference. Dimensions are nominal; confirm against the controlling UCP200 series JIS / ISO revision and the specific component data sheets before manufacture or procurement. All trademarks are the property of their respective owners.