Adapter Sleeves HE 311 NTN
Adapter Sleeves HE 311 NTN - Image 2
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Adapter Sleeves HE 311 NTN

₨ 3,850

Availability: 9 in stock

SKU: 0965 Categories: , Brand:

Technical Specifications (Proper Size)

Specification Value
Shaft bore / Inner diameter (d₁) ≈50.8 mm (2 in) — fits a 2″ shaft.
Taper seating outer diameter (d) ≈55 mm — outer tapered surface matching bearing tapered bore.
Locknut outer diameter (d₂) ≈75 mm — locknut seating size.
Sleeve length (B₁) 45 mm — axial length of the sleeve.
Locknut spacing (B₂) ≈12–12.5 mm — distance from bearing face to back of nut.
Thread designation (G) M55 × 2 — thread for locknut.
Taper ratio 1:12 standard taper — industry standard fit.
Approximate Weight ~0.30–0.36 kg — depending on configuration & manufacturer.

🛠️ Features & Benefits

  • Designed for 2″ (≈50.8 mm) shafts: Makes it ideal for mounting bearings with tapered bores without expensive shaft machining.

  • Complete fastening kit: Typically used with a KM 11 locknut and MB 11 locking washer to secure assembly and prevent loosening.

  • Standardized taper: 1:12 taper ensures a reliable press fit and easy removal when servicing bearings.

  • Robust build: Constructed from industrial-grade steel to withstand operational loads and provide long service life.

Product Description – NTN Adapter Sleeve HE 311 (Proper Size)

Product Name: Adapter Sleeve HE 311
Brand: NTN (inch-series adapter sleeve accessory)
Type: Adapter sleeve with locknut (KM 11) and locking washer (MB 11) (sold as a set or matched accessory)
Application: Used to mount bearings with tapered inner bores (e.g., such as 1311 K, 20311 K, 21311 K, 2211 K, 22211 K) onto a smooth cylindrical shaft — enabling secure axial positioning and easier assembly/removal without needing shaft shoulders.

Weight 0.32 kg
Dimensions 55 × 75 × 45 cm

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