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NTN pillow block mounted bearing · NTN ARP-2S
Pillow block bearing NTN ARP-2S

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Pillow block bearing NTN ARP-2S

Manufacturer Part Number
ARP-2S
Brand
NTNOfficial distributor
Category
Bearing housings
Subcategory
Y-bearing unit
Series
ARP

NTN

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Description

NTN ARP-2S is a pillow block bearing reference, within Bearing housings. Request a quote for ARP-2S via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The ARP housing is a mounted pillow block unit: it combines a cast iron housing with a roller or ball insert bearing, already aligned and sealed at the factory. It is used to support transmission shafts in equipment where mounting must be quick and replacement simple. MR Accesorios Industriales sells the NTN line in Buenos Aires, Argentina, and quotes the exact part number you need.

The ARP series designation is read in blocks: the letters identify the pillow block housing family with insert bearing and the number that follows indicates the shaft size for which the unit is machined. In the series codes there are suffixes that define sealing, mounting or housing configuration variants. For example, ARP-2S corresponds to a unit of the ARP series with its own suffix. Send me the complete part number and we will quote that variant.

These housings appear in belt conveyors, sorting belts, mixers, extractors, bucket elevators and packaging lines. In food, chemical and aggregate plants in Argentina they are chosen precisely because the unit comes assembled: the base is bolted down, the shaft is fitted and it is running. They are also used in water treatment equipment, industrial ventilation and agricultural machinery, where the support must withstand dust, moisture and frequent washdowns.

To select correctly, first look at the shaft diameter and the insert mounting type: there are units with set screws, with eccentric locking collar or with taper adapter, and each one requires a different procedure. The sealing defines the working environment: labyrinth for coarse dust, contact lip seal for moisture or liquids. During mounting, rest the base on a flat and rigid surface, tighten the bolts in a cross pattern and check shaft alignment before starting the transmission. Lubricate according to the rotation regime and check radial clearance if the equipment works with alternating load.

Mounted units are interchanged between brands by shaft number and housing configuration, not by manufacturer code. If the equipment has a unit from another brand, what matters is the shaft diameter, the distance between base hole centers, the height to center and the insert mounting type. With that data we will indicate the equivalent NTN unit. If the part has no identification, send us a photo with the shaft measurement and we will solve it anyway.

If you already have the ARP part number, the equipment model or the shaft size, write to us via WhatsApp and we will quote you shortly. MR Accesorios Industriales works the NTN line together with the rest of the transmission components: housings, bearings, chains and pulleys, so that you can resolve the replacement in a single inquiry.

This description provides guidance on the product type. Check the configuration and dimensions of this reference.

Dimensions

Dimensions and tolerances: Send us the part number via WhatsApp and we'll confirm dimensions, sealing, and internal clearance against the manufacturer's data sheet.

Frequently Asked Questions

What is the difference between an ARP housing and a split housing?
The ARP is a pillow block unit with insert bearing already mounted and sealed: it is bolted down and the shaft is fitted. The split type is a split housing that wraps around the shaft without disassembling the transmission. They are chosen according to equipment access and the type of support.
How do I know what shaft size my equipment needs?
Measure the shaft diameter where the bearing supports and the distance between the base holes. With those two data points and a photo of the old unit we will quote the corresponding ARP. If the shaft is worn, let us know and we will take it into account.
How often is a housing with insert bearing lubricated?
It depends on the rotation regime, the load and the environment. In applications with dust or moisture, it is advisable to check the condition of the sealing and the grease at each maintenance stop. If the insert has a grease fitting, apply grease compatible with the factory grease without overfilling.
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