When you're working on bearings, couplings, and power transmission setups, the part you need depends on the job: a hub-mounted collar for a solid, adjustable clamp, or a flexible spider insert for absorbing shock and cushioning torque between two shafts. These two components do different jobs, and their listed prices reflect that - the Face Flange Mounted Shaft Collar is at $38.65, the Elastic Spiders For Shaft Coupling is at $95.99.
Quick Verdict
If your priority is a rigid, mar-free hold around a shaft with flexible mounting holes, the Face Flange Mounted Shaft Collar is the component to pick. If you need a flexible buffer that cushions a transmission coupling, the Elastic Spiders MT PU insert is the one.
At a Glance
| Feature | Face Flange Mounted Shaft Collar | Elastic Spiders For Shaft Coupling |
|---|---|---|
| Price | $38.65 | $95.99 |
| Core role | Hub-mount collar that clamps around a shaft | Flexible spider insert that cushions coupling |
| Material | Aluminum black anodize (steel also offered) | TPU/CPU |
| Mounting / specs | 1\" ID; three tapped counterbored holes + three unthreaded holes; ANSI keyway option | Hardness 90~95A; torque 22.4-2500 Nm; temp -35~+100°C; GB5272-85 |
| Use for | Rigid positioning and simple shaft clamping | Shock-absorbing flexible joints in larger drivelines |
The main difference lies in how each part handles the connection. The collar is a one-piece hub mount that clamps directly onto a shaft, while the spider insert is meant to sit between coupling hubs and transfer torque while absorbing vibration and slight misalignment.
Where Each Product Wins
The Face Flange Mounted Shaft Collar wins on price and rigidity. It's the lower-priced way to get a solid, clamp-style collar around a shaft, with mounting holes arranged for multiple setups. Its aluminum build keeps weight down and corrosion resistance up.
The Elastic Spiders For Shaft Coupling wins for flexibility and shock handling. The TPU/CPU spider provides mechanical cushioning, and the wide torque and temperature range mean it can stand up to demanding transmission duty.
If you're assembling a new line shaft or positioning a component at a specific spot, the collar gives you a direct, repeatable stop. If you're dealing with machinery that starts and stops heavily, the spider insert helps soften torque spikes.
Product Notes
Face Flange Mounted Shaft Collar
This Summit Collars hub-mount collar comes in a 1-inch inside diameter in aluminum black anodize, with steel also offered as a material choice. Its three tapped counterbored holes and three unthreaded holes give you multiple ways to mount it, and the collar's even clamp creates a strong, mar-free hold on the shaft. You also get a standard ANSI keyway option for use with keyed shafts. Choose it when you need a lightweight, corrosion-resistant collar for rigid shaft positioning. The trade-off: the aluminum version is not as strong as black-oxide steel, so if you're bracing against heavy shock loads, you'd want the steel version or a flexible insert instead.
Elastic Spiders For Shaft Coupling
This MT-012 spider insert is a flexible coupling buffer made from TPU/CPU with a hardness of 90~95A. It's designed to provide mechanical cushioning in large equipment and transmission shafts. It handles torque from 22.4 to 2500 Nm and operates across -35 to +100°C, with natural color and GB5272-85 standard compliance. Pick it if you need to absorb shock between connected shafts and keep the coupling running smoothly. Keep in mind that this is an insert, not a complete coupling - you'll need to match it with the appropriate hubs and hardware, which adds to the total setup cost and planning.
Final Choice by Use Case
Choose the Face Flange Mounted Shaft Collar if your application calls for a rigid, repeatable stop and you want the simplicity of a direct clamp. Choose the Elastic Spiders For Shaft Coupling if your driveline needs shock cushioning between coupled shafts and you're building the assembly around this insert.
