Retrospective duty liability and commercial classification of bearings could not defeat exemption without proof of market understanding.

A later departmental circular cannot be relied on to sustain duty for an earlier period when it was issued to resolve existing doubts on classification and dutiability. The circular therefore had no retrospective effect for the prior period. The components used in electric motors were also not proved to be "bearings" in the commercial or trade sense, and mere friction reduction was insufficient to deny exemption. In the absence of evidence that the goods were understood in the market as bearings, the exemption notifications remained available and the duty demand and penalty failed.

---

---

Issues: (i) Whether the departmental circular issued after the relevant period could be used to sustain the duty demand for the earlier period; (ii) whether the impugned components used in electric motors were "bearings" excluded from exemption under the notifications, so as to attract excise duty and penalty.

Issue (i): Whether the departmental circular issued after the relevant period could be used to sustain the duty demand for the earlier period.

Analysis: The circular relied upon by the department was issued after the entire period for which demand was raised. The circular itself proceeded on doubts regarding classification and dutiability and was issued to resolve those doubts. A circular of that nature cannot be applied retrospectively to fasten liability for a period anterior to its issue.

Conclusion: The demand could not be sustained on the basis of the later circular for the prior period and this issue is decided in favour of the assessee.

Issue (ii): Whether the impugned components used in electric motors were "bearings" excluded from exemption under the notifications, so as to attract excise duty and penalty.

Analysis: The notices and orders did not establish that the components were bearings in the commercial or trade sense. Mere reduction of friction is not enough to classify an article as a bearing. The evidence relied upon did not show that a distinct, marketable bearing came into existence. In the absence of proof that the goods were understood in the market as bearings, the exclusion in the exemption notifications was not attracted, and the foundation for duty demand and penalty failed.

Conclusion: The goods were not proved to be bearings excluded from exemption and the issue is decided in favour of the assessee.

Final Conclusion: The exemption under the relevant notifications was available, the duty demand and penalty were unsustainable, and the appeals succeeded.

Ratio Decidendi: A later departmental circular cannot retrospectively create liability for an earlier period, and an item is not a bearing for exemption-denial purposes unless it is shown, on evidence, to be commercially understood and marketable as a bearing.

---