Plastic Gravity Roller
The THJR series plastic gravity roller is designed for light load handling with a precision bearing in a nylon and PP housing. It is used in applications where product weight is low and smooth, low-effort movement is required. The roller is available in multiple diameters from 16 mm to 60 mm, with shaft sizes of 5 mm, 6 mm, 8 mm, 10 mm or 12 mm, and lengths from 50 mm to 1200 mm. The unit is made from PVC, nylon or PP depending on the model, and is suitable for use in dry environments where load capacity is not a primary concern.
Product Overview
The THJR series plastic gravity roller is designed for light load handling with a precision bearing in a nylon and PP housing. It is used in applications where product weight is low and smooth, low-effort movement is required. The roller is available in multiple diameters from 16 mm to 60 mm, with shaft sizes of 5 mm, 6 mm, 8 mm, 10 mm or 12 mm, and lengths from 50 mm to 1200 mm. The unit is made from PVC, nylon or PP depending on the model, and is suitable for use in dry environments where load capacity is not a primary concern.
Part of the Roller range, used in Warehouse and Distribution Centres.
Key Benefits
- Precision bearing ensures smooth rotation under light load
- Nylon and PP housing reduces weight and resists wear in dry environments
- Multiple diameter and length options to fit standard tube sizes
- Shaft sizes from 5 mm to 12 mm allow compatibility with common shafts
- Low rolling resistance ideal for light product movement
Application Scenarios
- Lightweight product transfer on low-speed gravity conveyors in packaging lines
- Assembly line sections where small parts or components are moved by hand
- Warehouse staging areas for small cartons or containers
- Automated feeding systems for small parts where power is not required
- Conveyor sections where minimal friction and quiet operation are needed
Who It Is For
- Conveyor system integrators building low-load gravity conveyors
- Material handling equipment builders needing consistent roller dimensions
- Industrial distributors stocking plastic rollers by diameter and shaft size
- Assembly line builders using gravity rollers for part positioning
- Logistics automation contractors installing light-duty transfer points
Problems It Solves
- Inconsistent roller dimensions when sourcing from multiple suppliers
- High rolling resistance in low-load applications due to poor bearing quality
- Lack of standard shaft size compatibility across different roller models
- Over-engineering with metal rollers where plastic is sufficient
- Difficulty matching roller diameter and tube thickness to existing frame tubes
Technical Features
- Precision bearing in nylon and PP housing for smooth rotation
- Available in multiple diameters from 16 mm to 60 mm with specified tube thickness
- Shaft sizes of 5 mm, 6 mm, 8 mm, 10 mm or 12 mm to match common shafts
- Length range from 50 mm to 1200 mm for flexible layout design
- PVC, nylon or PP material used based on model, suitable for dry environments
Materials
- PVC used in all models for lightweight, low-cost construction
- Nylon and PP housing in the bearing house for wear resistance
- Material selected based on model and application requirements
Quality Control
- Rotation checked by hand to ensure smooth movement
- Dimensions verified against the specified diameter, thickness and length
- Shaft size confirmed against the model specification
- Material grade checked against the model's material description
Customization Options
- Model selected based on required diameter, shaft size and length
- Available in multiple lengths and shaft sizes to match existing frames
- Material is fixed per model and not interchangeable
Use Guide
- Select the model based on the required diameter, shaft size and length
- Ensure the shaft diameter matches the roller’s inner bore
- Use only for light loads where rolling resistance must be minimal
- Avoid use in high-impact or high-load environments
- Check that the roller length fits within the frame spacing
Specifications
| Model No | THJR-1610B |
|---|---|
| Diameter | Φ16 mm |
| Tube Thickness | 1.0 mm |
| Shaft | Φ5 mm |
| Length | 50~600 mm |
| Material | PVC |
| Model No | THJR-2015B |
| Diameter | Φ20 mm |
| Tube Thickness | 1.5 mm |
| Shaft | Φ6 mm |
| Length | 50~600 mm |
| Material | PVC |
| Model No | THJR-2518B |
| Diameter | Φ25 mm |
| Tube Thickness | 1.8 mm |
| Shaft | Φ8 mm |
| Length | 50~800 mm |
| Material | PVC |
| Model No | THJR-3018B |
| Diameter | Φ30 mm |
| Tube Thickness | 1.8 mm |
| Shaft | Φ8 mm |
| Length | 50~800 mm |
| Material | PVC |
| Model No | THJR-3820B |
| Diameter | Φ38 mm |
| Tube Thickness | 2.0 mm |
| Shaft | Φ8 mm |
| Length | 50~1200 mm |
| Material | PVC |
| Model No | THJR-5025B |
| Diameter | Φ50 mm |
| Tube Thickness | 2.5 mm |
| Shaft | Φ8 or Φ10 mm |
| Length | 80~1200 mm |
| Material | PVC |
| Model No | THJR-6030B |
| Diameter | Φ60 mm |
| Tube Thickness | 3.0 mm |
| Shaft | Φ12 mm |
| Length | 80~1200 mm |
| Material | PVC |
Manufacturing Process
Step 1
Molding of the roller tube and bearing housing
Step 2
Insertion of the precision bearing into the housing
Step 3
Shaft fitting and alignment
Step 4
Final inspection of rotation and dimensions
Step 5
Packing for shipment
Compared With Other Options
| Metal gravity rollers | Plastic rollers are lighter and quieter, but have lower load capacity and are not suitable for heavy or high-impact applications |
|---|---|
| Standard plastic rollers without precision bearings | This model uses a precision bearing for smoother rotation and longer life under repeated use |
| Rollers with rubber or polyurethane covers | This model has a hard plastic surface, which is better for clean environments and does not degrade under UV exposure |
Plastic Gravity Roller Questions
What is the load capacity of the plastic gravity roller?
The load is very limited and intended for light weight product moving only.
What shaft sizes are available?
Available shaft sizes are Φ5 mm, Φ6 mm, Φ8 mm, Φ10 mm, and Φ12 mm depending on the model.
Can I get a different material than PVC?
The material is fixed per model and not available for change; all models use PVC.
What is the bearing type?
The roller uses a precision bearing in a nylon and PP housing.
What lengths are available?
Lengths range from 50 mm to 1200 mm depending on the model.
Is the roller suitable for outdoor use?
No, it is intended for dry indoor environments only.
Get a Price for Plastic Gravity Roller
Send the quantity and any material or surface option you need, and a quotation comes back against this model number.