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2.5 Inch Light Grey PU Plug In Stem Caster Wheels (30-30kg)
Step 1: Mounting Style
Rigid
✓
Swivel Plate
✓
Threaded Stem
✓
Bolt Hole
✓
Swivel Stem
✓
Stem Ring
✓
Expanding Stem
✓
Others
✓
Step 2: Wheel Diameter
2.5
8 Core Advantages of PU Single Ball Bearing Bolt-Hole Stem Furniture Casters (Type K Total Lock Brake)
- Single Ball Bearing Swivel: Precision ball bearing design ensures smooth, quiet rotation for furniture. Reduces push force for easy repositioning.
- Premium PU Wheel — Non-Marking & Quiet: High-quality PU (Polyurethane) tread in Red delivers superior floor protection — completely non-marking with quiet rolling. Wide 46 mm tread provides excellent stability.
- Total Lock Brake (Type K): Simultaneously locks wheel rotation and swivel movement. Type K stem bolt with integrated brake — keeps furniture securely in place.
- PA (Nylon) Housing — Tough & Lightweight: PA (Nylon) housing offers superior impact resistance and excellent durability. Lightweight yet tough construction ideal for premium furniture applications.
- Bolt-Hole Stem Quick Installation: Standard M11×22 bolt-hole stem design. Insert stem into furniture mounting hole for quick, secure installation. J=swivel, K=swivel+brake.
- Furniture-Grade Design: Engineered for office chairs and premium furniture. PU tread + PA housing + ball bearing combination delivers superior rolling experience for high-end applications.
- Consistent Quality: Strict QC processes. Each caster load-tested and rotation-tested before shipment.
- Wide Application Temperature Range: Reliable from -20°C to +60°C. Consistent rolling quality.
Detailed Technical Properties
| Wheel Material | PU (Polyurethane), Red |
|---|---|
| Wheel Hardness | 92 ± 3 Shore A |
| Housing Material | PA (Nylon) |
| Bearing Type | Single Ball Bearing |
| Brake Type | Total Lock — Wheel + Swivel (Type K) |
| Stem Type | Bolt Hole — M11×22 |
| Swivel Angle | 360° |
| Operating Temperature | -20°C to +60°C |
| Floor Protection | Excellent — Non-marking |
| Noise Level | Low — Quiet rolling |
Downloads
Applications
Suitable Industries & Applications
Office Chairs & Workstations
Home Furniture & Seating
Retail Display Fixtures
Hotel & Hospitality Furniture
Conference & Meeting Room Furniture
Library & Study Furniture
Salon & Spa Equipment
Reception & Lobby Furniture
Educational & Institutional Furniture
Light Duty Mobile Carts
Entertainment & Media Stands
Portable Office Equipment
Recommended Usage
Suitable
Smooth, hard floors (tile, concrete, vinyl)
Suitable
Indoor environments
Suitable
Intermittent to moderate use
Suitable
Equipment under 260 kg total (4 casters)
Not Recommended
Rough outdoor terrain or gravel
Not Recommended
Continuous heavy-duty industrial use
Not Recommended
High-temperature (>60°C) environments
Not Recommended
Exposure to strong acids or solvents
FAQ
Q: What is the minimum order quantity? Can I order samples first?
A: Our standard MOQ is 100 pieces per model. Sample orders are welcome — you can order 1–2 pieces for testing before placing a bulk order.
Q: Can I customize the wheel color or bracket finish?
A: Yes! We offer full OEM/ODM customization. You can choose custom wheel colors, bracket finishes, and even branded packaging with your logo. Custom orders have their own MOQ — contact us for details.
Q: Will these casters scratch or leave marks on my floors?
A: Not at all. Our PU wheels are non-marking and floor-friendly. They roll smoothly and quietly on tile, concrete, vinyl, and other hard surfaces without leaving scuffs or stains.
Q: These have a threaded stem — how do I install them on my equipment?
A: Insert the M11×22 bolt-hole stem into the mounting hole on your furniture. We offer J-type (swivel) and K-type (swivel + brake) configurations. No special tools needed.
Q: How do I know this caster can handle my equipment's weight?
A: Each caster supports up to 30 kg individually. For a 4-caster setup, the total safe working load is around 105 kg (safety margin included). Always distribute weight evenly across all casters. If you're unsure, our team can help you pick the right model.
Q: What is the typical lead time for orders?
A: Sample orders ship within 3–5 business days. Standard bulk orders typically take 15–25 days, depending on quantity. Custom orders may take a bit longer — we'll confirm the exact timeline when you order.
Company Profile
SUMATIC CASTER, established in 2020 in Zhongshan City, China, is a global provider of caster solutions, offering over 40 product series and more than 1,000 models. We specialize in high-performance casters for furniture, industrial, medical, and commercial applications, aiming to enhance equipment mobility and user experience.
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Quality Control
Our Certificates
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Packaging & Shipping
Technical Specifications Table
Common Specifications: Wheel = PU (Polyurethane), Red | Housing = PA (Nylon) | Bearing = Single Ball Bearing | Stem Type = Bolt Hole (J/K)
Stem Mount Models
| Photo | Model | Size | Wheel Diameter | Wheel Width | Load Capacity | Overall Height | Stem Spec | Mounting Type |
|---|---|---|---|---|---|---|---|---|
|
SC3750-J02 | 2.5" | 60 mm | 46 mm | 30 kg | 70 mm | M11×22 | Stem Bolt |
|
|
SC3750-K02 | 2.5" | 60 mm | 46 mm | 30 kg | 70 mm | M11×22 | Stem Bolt with Brake |
Type D = Thread Stem (Swivel) | Type E = Thread Stem with Brake (Swivel + Brake)
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