
REXNORD ZB5115 flange bearing 4 holes
- Brand
- REXNORD
- Category
- Bearing housings
- Subcategory
- Bearing housings
- Series
- 5000
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Description
REXNORD ZB5115 belongs to flange bearing 4 holes, 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 ZB5115 and any equivalents.
Rexnord ZB series housings are 4-bolt flange mounted bearing units that fasten rotating shafts to flat surfaces with firm alignment. They suit equipment where the bearing is flanged to a plate or frame, carrying radial loads and some axial thrust. MR Industrial Accessories supplies this line in different shaft sizes and mounting configurations.
The ZB code is a four-digit reference: the first two digits denote the housing type and the last two the shaft size. For instance, ZB2303, ZB2307 and ZB2308 belong to the 2000 series and differ in housing diameter, while ZB3111 and ZB3115 are part of the 3000 series, which offers higher capacity. The suffix does not translate directly into millimeters, so the complete code plus the required shaft size is the best way to request a quote.
Typical applications include belt conveyors, bucket elevators, mixers, mills and process equipment in food, chemical and aggregate plants. The 4-bolt flange can be bolted to folded sheet metal or cast frames, and the housing can be rotated to orient the load as needed.
When selecting a housing, check the shaft size, the fastening type and the operating environment. Dust, water or frequent washdowns call for reinforced sealing; clean areas can use standard sealing. During mounting, ensure the flange sits flat and tighten the bolts in a cross pattern to avoid deforming the housing. Use the lubricant specified by the manufacturer; internal clearance is not adjusted on this type of unit.
Interchange between mounted housing brands is based on shaft size, flange type and load capacity, not on the code itself. A Rexnord ZB can be replaced by units from other brands with the same configuration, but mounting and sealing dimensions must always be compared. MR Industrial Accessories can indicate a compatible alternative when the exact code is not available.
To request a Rexnord ZB housing, send the complete code by WhatsApp or email to MR Industrial Accessories. If you need a variant that is not listed, provide the model or shaft size and we will identify the corresponding option.
Dimensions
- Bore
- 1 15/16 in
Frequently asked questions
- What does the ZB code mean in Rexnord housings?
- ZB identifies Rexnord's flange unit family; the number of flange holes depends on the model. The following digits indicate the series and shaft size. For a quote, send the complete code, such as ZB2307, and the quantity needed.
- How do I choose between a 2000 series and a 3000 series housing?
- The 3000 series has higher load capacity and suits larger shafts or more demanding applications. The 2000 series works for moderate loads. Compare shaft size and working conditions, and we can advise by WhatsApp.
- What should I keep in mind when mounting a ZB housing?
- Check that the support surface is flat and clean, tighten the bolts in a cross pattern, and follow the specified lubrication. In dusty or wet environments, choose reinforced sealing. Shaft alignment is key to avoiding parasitic loads.

