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0253 Multi Hurdle Set
4143 Flat Shelf
9016/1 Lock Collar - Pair of collars Ø 50 mm
9089A Cable Station Premium
9016 Spin Collar Ø 50 mm
Disk clamp collars and springs 50 mm diameter
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The Ø 50 mm collars secure discs and bumpers onto Olympic barbells during weightlifting and powerlifting lifts. The Sidea range covers four fastening systems: steel springs, screw-on spin collars, reinforced Olympic spin collars and quick-release lever lock collars for dynamic training.
Compatible with standard Olympic barbells (Ø 50 mm)
Four locking systems for different requirements
Made of steel or engineering polymer, depending on the model
Collar & spring
Collar & spring
The Ø 50 mm collars are the safety system that secures discs and bumpers onto the sleeves of Olympic barbells. Sidea offers four distinct models: 9019 steel spring collars, 9016 threaded spin collars, 9016/2 reinforced Olympic spin collars and 9016/1 quick-release lock collars. Each type is designed for a specific use case, from CrossFit boxes where quick fastenings are needed between WODs, to the weightlifting platform where the collar must hold the weight during snatches and clean & jerks at full speed, and where the collars themselves form part of the competition weight calculation. No single collar is universal: the choice depends on the discipline, the frequency of load changes and the type of bumper discs used.
A 50 mm collar is a mechanical locking device that fits onto the sleeves of a Olympic barbell to prevent the discs from sliding during exercise. The 50 mm internal diameter complies with the IWF/IPF standard for Olympic sleeves, differing from the 28 mm collars used on standard barbells.
Its function goes beyond safety: a collar that fails to hold causes an asymmetrical imbalance in the load, with significant technical implications for the snatch, clean and jerk, bench press and deadlift. For explosive exercises such as the snatch and clean & jerk, the collar must withstand sudden deceleration during the catch phase above the head or on the shoulders.
The 9019 disc-holding springs are the most basic and economical solution. They are opened by squeezing the two side handles and can be quickly fitted onto the sleeve. They are the most versatile, suitable for a wide range of workouts, such as basic exercises and supplementary exercises with moderate loads. They are not the best choice for Olympic weightlifting or maximum powerlifting, where systems with a more secure clamping mechanism are required.
The 9016 model uses a hand-tightened screw that clamps an inner band against the sleeve. It offers a better seal than spring-loaded models, but takes longer to apply. It is a good compromise for commercial weight rooms and home gyms where weight changes are not constant.
The 9016/2 is the reinforced version of the spin collar, featuring a more robust body and a clamping system designed to withstand heavy loads in powerlifting and weightlifting. The design is engineered to withstand the repeated impacts typical of dropping weights from a height onto the platforms; each collar weighs 2.5 kg.
The 9016/1 uses a lever/cam mechanism that allows it to be locked and unlocked in a single movement. It is the go-to choice in CrossFit boxes and during weightlifting sessions involving frequent load changes, where every second lost between sets counts.
For a weight room used by a mixed group of users, the most practical combination is the 9016 spin collar on general-purpose barbells and the 9016/1 lock collar on barbells intended for the Olympic platform. The 9019 springs can remain as spare partsor for lightweight competition barbells.
Those who work one-to-one with athletes on technical lifts prefer the lock collar because it allows for quick changes between sets. The Olympic spin collar is recommended when planning maximum loads for deadlifts and squats, as it guarantees controlled tightening.
In a home gym, a 9016 spin collar covers 80% of your needs. Anyone training in Olympic weightlifting or high-density cluster sets should invest in a pair of lock collars.
A lock collar is virtually essential: during MetCon sessions involving thrusters, snatches and cleans, the time taken to change discs must be kept to a minimum. Spring clips do not provide sufficient hold during repeated releases from height. To be used in conjunction with kettlebell and functional equipment for complete set-ups.
| Model | SKU | System | Recommended use |
|---|---|---|---|
| Pair of Steel Disc Retaining Springs | 9019 | Steel spring collar | Supplementary exercises, moderate loads, classes |
| Spin Collar Ø 50 mm | 9016 | Manual screw clamping | Commercial weight room, standard home gym |
| Olympic Spin Collar Ø 50 mm | 9016/2 | Reinforced screw clamping | Powerlifting, weightlifting, maximum loads |
| Lock Collar Pair, Ø 50 mm | 9016/1 | Quick-release lever fastener | CrossFit, Olympic weightlifting |
Answers to the most common questions about compatibility, sealing, materials and the differences between locking systems are set out in the dedicated FAQ section below.
Sidea has been distributing professional fitness equipment since 1999 from its headquarters in Gambettola. As an official StrongFirst distributor and Luxiaojun In Italy, we select componentThe equipment — including collars — is designed based on actual use in gyms, CrossFit boxes and weightlifting platforms. The 50 mm range stems from the need to cover all operational scenarios with four distinct models rather than a single compromise. Direct technical advice is available for complete set-ups and Gym Design projects with 3D renderings.
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