Import Adapter Sleeve — Buy in wholesale FOB from Supplier in India

KT brand adapter sleeves from A. Nairsons Industries India are precision mechanical components engineered for mounting taper bore bearings onto smooth cylindrical shafts without requiring additional machining. Manufactured from carbon steel or alloy steel graded to IS/ISO standards, these sleeves feature a tapered outer surface that matches the taper bore of the bearing and a slotted cylindrical inner bore that grips the shaft via an internal thread for a lock nut. The standard taper ratio is 1:12 for most bearing types, with some larger sizes using 1:30, and the material hardness typically falls within 170-240 HB for adequate wear resistance under cyclic loading.

The KT series uses through-hardened alloy steel with controlled sulphur and phosphorus content to ensure machinability without compromising fatigue strength. Surface finish on the taper section is critical, typically ground to N7 or better to ensure uniform contact with the bearing bore and prevent fretting corrosion during operation. The lock nut thread is precision cut to ISO metric fine thread standards (typically M20x1.5 to M200x3 depending on sleeve size), with a 60-degree flank angle and class 6H tolerance to mate with standard KM or KML series lock nuts. Lock washer tabs engage slots machined into the sleeve OD to prevent loosening under vibration.

These adapter sleeves serve industrial sectors including electric motor manufacturing, centrifugal pump assembly, conveyor drive systems, and heavy gearbox construction. Buyers are typically OEMs in power transmission, aftermarket distributors servicing maintenance departments, and industrial equipment rebuilders. When sourcing from Ludhiana, Punjab, importers should confirm whether A. Nairsons Industries India provides mill test certificates with chemical composition and mechanical property verification, as material certification practices vary among Indian bearing accessories manufacturers.

A. Nairsons Industries India operates from B-III/4, G.T. Road, Sahnewal, Nandpur, Ludhiana, Punjab, 141120, India, positioning the company within one of India's densest clusters for bearing accessories and power transmission component manufacturing. The supplier's trust tier is classified as harbor, and the response rate stands at 0.00 percent with zero average response hours recorded, indicating limited or no active engagement through the platform's inquiry system. The product range extends beyond adapter sleeves to include withdrawal sleeves, hydraulic sleeves, hydraulic nuts in the HMV series, and precision lock nuts across multiple series, suggesting a focused specialisation in bearing mounting and dismounting technology rather than general engineering.

The supplier profile does not disclose manufacturing floor area, workforce size, annual turnover, specific quality management system certifications, export licence details, or named client references. No information is provided about in-house heat treatment capabilities, CNC machining capacity, or testing infrastructure such as coordinate measuring machines or surface roughness testers. The KT brand designation appears to be an in-house trademark for this product family. Buyers should conduct direct due diligence to verify production capacity, quality control protocols, and the availability of material test certificates before committing to volume orders.