It's important to note not all PU dumbbells are created equal.
Simply calling dumbbells 'pro-style', 'premium' or 'commercial' doesn't describe the quality of material that is used in their construction. When shopping around, keep an eye out for the two main types of polyurethane dumbbells: Cast Polyurethane (CPU) and Thermoplastic Polyurethane (TPU).
Understanding the differences between CPU and TPU is vital when making the correct choice for your use case.
THE BREAKDOWN
1. DURABILITY
The manufacturing process of CPU and TPU dumbbells differs significantly. While both are durable, CPU is the more dense and sturdier material out of the pair. This allows the dumbbell ends to withstand heavy usage without cracking or breaking, while TPU dumbbells are more susceptible to wear and tear over time. For those who require dumbbells for regular and consistent use, CPU is the more reliable choice.
2. CONSISTENCY
When it comes to consistency, the manufacturing process of CPU and TPU dumbbells differs. CPU dumbbells have a more consistent weight and shape, making them nicer to handle and a more reliable choice for strength training. Users can confidently interchange weights without worrying about significant modifications to their form or technique. TPU however, may have slight variations in weight and shape, making them less predictable in comparison.
3. GRIP
CPU offers a better grip than TPU. As the denser material, it creates a more textured surface resulting in a more secure and comfortable grip. TPU has a smoother surface, making them less suitable for exercises that require a secure grip of the dumbbell head. The differences in the manufacturing process become noticeable as you use the weights regularly.
4. ODOUR
In terms of odour, CPU dumbbells have the upper hand over TPU. Upon unboxing a new weight, it is usually immediately apparent. The advanced manufacturing process used to create CPU produces a cleaner and less pungent scent, making them a more appealing choice for gym owners and their members. TPU on the other hand, has a more noticeable odour, which may be off-putting to some users.
5. AESTHETICS
The process of manufacturing the dumbbell ends is also different between the two kinds of Polyurethane. CPU is made by melting in mould which creates clean, crips edges and a smooth finish. TPU is constructed by an injection-method in very high temperatures. Both kinds produce bold lettering for easy identification of weight, and bright and clear colours perfect for custom branding opportunities.
6. VALUE
Generally, TPU dumbbells are more cost-effective compared to CPU dumbbells, making them a great choice for those on a budget. However, it's worth noting that cheaper options are rarely the most durable or reliable in the long run. While CPU may come at a higher cost, their toughness makes them a more economical option. If you prioritise long-term value and durability over upfront cost, you may want to consider investing in a CPU product.