Total Productive Maintenance (TPM), an important maintenance management approach grounded on lean principles, has found widespread applicability in the manufacturing sector since the 1950's. More recently, Industry 4.0 (I4.0) has promoted the digitalization of several functional areas bringing disruptive innovation to manufacturing environments. This paper aims at examining the integration of I4.0 technologies into Total Productive Maintenance (TPM) practices in multiple large-sized manufacturing companies. Case-based research is adopted to investigate four manufacturers located in Southern Brazil. Guided by the Diffusion of Innovation Theory (DIT) as a theoretical lens, within-case and cross-case analyses are performed. Findings indicate that the integration of I4.0 into TPM results in benefits and barriers associated with DIT's attributes (real advantage, compatibility, complexity, trialability, and observability), although their degree and orientation vary according to the attribute. Identifying aspects that could constrain a successful digitalization of TPM may help companies develop countermeasures to promote innovation adoption. Our results may help practitioners with the digitalization of TPM by offering a more realistic vision of the difficulties and benefits they may experience in practice. We conclude the paper with five research propositions derived from the multiple case data findings.

全面生产维护 (TPM) 是一种基于精益原则的重要维护管理方法，自 1950 年代以来已广泛应用于制造业。最近，工业 4.0 (I4.0) 推动了多个功能领域的数字化，为制造环境带来了颠覆性创新。本文旨在研究将 I4.0 技术集成到多个大型制造公司的全面生产维护 (TPM) 实践中的情况。采用基于案例的研究来调查位于巴西南部的四家制造商。以创新扩散理论 (DIT) 为理论视角，进行案例内和跨案例分析。调查结果表明，将 I4.0 集成到 TPM 会带来与 DIT 相关的好处和障碍真正优势、兼容性、复杂性、可试验性和可观察性），尽管它们的程度和方向因属性而异。确定可能限制 TPM 成功数字化的方面可能有助于公司制定对策以促进创新采用。我们的结果可以通过提供他们在实践中可能遇到的困难和好处的更现实的愿景来帮助从业者实现 TPM 的数字化。我们总结了从多个案例数据发现中得出的五个研究命题。