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RNAST45

Support Rollers

Extended Stock2–5 day dispatch
POA
See how our price compares
ISO 9001 Certified UK Bearings Stockist
RNAST45 Support Rollers
IKO
IKO logo

The IKO RNAST45 is a high-grade open support roller fabricated from high-strength chrome steel by IKO Japan. Designed for use without an inner ring, it provides exceptional radial load carrying capacity within a compact cross-section. It delivers smooth running accuracy in precision guide tracks and industrial machinery applications.

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Technical Dimensions & Load Ratings

Confirm these values match your shaft, housing and application requirements before ordering.

Dimensions

Bore Diameter (d)55mm
Outer Diameter (D)85mm
Width (B)19.8mm
IKO logo
IKO Model
Extended Stock2–5 day dispatch

RNAST45

Support Rollers

POA
Price on Application

Technical Specifications

Identification
Part NumberRNAST45
BrandIKO
Bearing TypeSupport Rollers
MaterialChrome Steel
Dimensions
Bore (Inner Diameter)55 mm
Outer Diameter85 mm
Width / Thickness19.8 mm

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Technical Datasheet

Download full specifications for RNAST45 — dimensions, load ratings, and material data.

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About the IKO RNAST45

The IKO RNAST45, is a support rollers, featuring a 55mm bore, 85mm outer diameter, and 19.8mm width, manufactured from chrome steel, and is extended stock at Buy Bearings.

The IKO RNAST45 is a high-grade open support roller fabricated from high-strength chrome steel by IKO Japan. Designed for use without an inner ring, it provides exceptional radial load carrying capacity within a compact cross-section. It delivers smooth running accuracy in precision guide tracks and industrial machinery applications.

Key Specifications

The RNAST45 support rollers is specified with 55mm bore (inner diameter), 85mm outer diameter, 19.8mm width. The chrome steel construction provides excellent wear resistance and durability in demanding operating conditions.

Common Applications

Support Rollerss are commonly used in:

heavy machinerygearboxesconveyorsmining equipmentindustrial drives

Why Buy the RNAST45 from Buy Bearings?

  • UK-authorised distributor with genuine IKO products
  • Expert technical support from our engineering team
  • Competitive pricing with fast UK dispatch
  • Full technical datasheet and cross-reference support
  • 30-day returns on standard products

Frequently Asked Questions

What is a RNAST45 bearing?

The RNAST45 is a IKO Support Rollers with a 55mm bore, 85mm outer diameter and 19.8mm width. It is Extended Stock at Buy Bearings.

What are the RNAST45 dimensions?

The RNAST45 measures 55mm bore (inner diameter) × 85mm outer diameter × 19.8mm width.

Is the RNAST45 in stock?

The RNAST45 is Extended Stock at Buy Bearings. Submit an enquiry or call our sales team for current stock and pricing (POA).

Related & Compatible Bearings

Same support rollers, closest dimensions first — useful if you need a slightly different size or this part is unavailable.

NUTR50A Support Rollers
2–5 Day Dispatch
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SKF logo
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POAPrice Match
Fabricated by SKF, the NUTR50A support roller represents over a century of Swedish engineering precision. This open unit is forged from premium chrome steel to endure rigorous radial impacts and high cyclic loads in cam drives. Its rugged profile reduces edge stress and extends machine uptime across processing industries.
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NURT50 Support Rollers
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IKO logo
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POAPrice Match
The IKO NURT50 is a heavy duty support roller engineered in Japan to absorb significant radial forces and moment loads. Formed from robust chrome steel with an open profile, it functions reliably within material handling and cam follower systems. Its precise dimensional tolerances deliver smooth travel and extended operational intervals.
Extended Stock2–5 day dispatch
NURT50R Support Rollers
2–5 Day Dispatch
NURT50R
IKO logo
50 × 90 × 32 mm
POAPrice Match
The IKO NURT50R is a heavy-duty support roller engineered from through-hardened chrome steel by Japanese linear motion leaders. It features an open design with full complement cylindrical rollers and a crowned running face. Designed to endure extreme radial forces in industrial presses and steel handling equipment.
Extended Stock2–5 day dispatch
NURT50RQ Support Rollers
2–5 Day Dispatch
NURT50RQ
IKO logo
50 × 90 × 32 mm
POAPrice Match
The IKO NURT50RQ is a robust open support roller bearing designed for high radial load capacity in cam mechanisms and conveyor tracks. Made from case-hardened chrome steel by IKO in Japan, it offers long service life and high operational rigidity. The absence of built-in seals allows high-speed movement and integration with central lubrication systems.
Extended Stock2–5 day dispatch

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