Why use a disc spring for bearing preload?
A disc spring can apply controlled axial preload in a compact space, helping reduce play, vibration and preload variation caused by tolerance stack-up or thermal movement.
Ball Bearing Disc Springs
Precision bearing preload disc springs for ball bearing assemblies, axial play control and compact rotating equipment.
Engineered for Reliable Load Control
Precision bearing preload disc springs for ball bearing assemblies, axial play control and compact rotating equipment.
- Disc spring geometry adapted for bearing assemblies
- Load, travel and installation height review
- Surface finish and edge quality controlled for rotating equipment
If you need to estimate load, deflection or stack arrangement, use the Disc Spring Design Calculator before sending drawings for engineering review.
Standard Sizes
Standard and custom bearing preload disc springs can be reviewed from compact bearing sizes to larger industrial rotating assemblies.
Materials
Spring steel, stainless steel, 17-7PH, Inconel X-750, Inconel 718 and other materials selected for preload stability, corrosion and temperature.
Temperature Range
-200 deg C to +600 deg C depending on material, bearing environment, lubrication and preload stress.
Recommended Applications
- Ball bearing preload
- Axial play control
- Electric motors and pumps
- Compact rotating equipment
RFQ DATA CHECKLIST
Send the application data engineers need first
For a faster quotation, include the basic spring geometry, target load and service condition. If a value is not confirmed yet, send the drawing or installed photos and mark it as estimated.
- OD / outside diameter
- ID / inside diameter
- Thickness and free height
- Material or working environment
- Quantity and delivery target
- Target load and working deflection
- Working temperature
- Application, drawing or photos
Key Product Data
Bearing preload control
Axial play reduction
Compact spring force
Custom OD / ID geometry
Bearing Preload Design Inputs
| Input | Why it matters |
|---|---|
| Available axial space | Controls free height, working deflection and stack feasibility. |
| Target preload | Defines spring force needed at assembly and operating condition. |
| Shaft and housing geometry | Sets OD, ID, guidance and clearance requirements. |
| Temperature and lubrication | Affects material choice, relaxation risk and surface finish needs. |
Bearing Spring Material Options
| Material family | Typical grades | Typical reason to select |
|---|---|---|
| Spring steel | 51CrV4 / 60SiCr7 / 50CrVA | General bearing preload in controlled environments. |
| Stainless steel | 301 / 304 / 316 / 17-7PH | Moisture, light corrosion or clean equipment requirements. |
| Nickel alloys | Inconel X-750 / Inconel 718 | Higher temperature, relaxation resistance or severe-duty bearing assemblies. |
Bearing preload spring sourcing notes
Bearing preload Belleville washer supplier and ball bearing disc spring RFQs usually need controlled axial force in a compact rotating assembly.
Useful RFQ inputs include shaft and housing dimensions, target preload, available axial space, bearing type, speed, temperature, lubrication and expected tolerance variation.
If the bearing environment includes heat, moisture, chemicals or long service intervals, stainless or nickel alloy materials should be reviewed before the spring geometry is fixed.
Common Product Questions
What details are important for bearing preload spring design?
Key details include shaft and housing dimensions, available axial space, target preload, bearing type, speed, temperature, lubrication and expected tolerance variation.
Can bearing disc springs be made from stainless or Inconel?
Yes. Stainless or nickel alloy materials can be reviewed when corrosion, temperature or preload stability require an upgrade from ordinary spring steel.