LIN-01 Series Sliding Membrane — Standard Split Type Plastic Linear Bearing
LIN-01 — 8 bore sizes · Dry-running · Maintenance-free · Split type.
MOQ: 50 pcs. Minimum order value USD 1,500; mixed orders and trial quantities welcome.
Linear Bearings › LIN Plastic Series
LIN-01 Series Sliding Membrane — Standard Split Type Plastic Linear Bearing
8 bore sizes · Dry-running · Maintenance-free · Split type
🆕 Series Overview
The LIN-01 series is a standard split-type plastic sliding membrane for use as the inner element in LIN-01R aluminium housing linear bearings. The membrane is pressed into the housing bore and the shaft passes through the membrane's precision bore, providing smooth dry-running linear motion without any lubrication.
The spiral groove pattern on the inner bore expels contaminants and dust axially rather than allowing accumulation. This makes LIN-01 far more tolerant of dirty environments than conventional ball linear bearings, where contamination causes rapid wear and shaft scoring.
⚙ Key Design Features
Spiral Groove Design
Inclined grooves on the inner bore expel dust axially, preventing contamination-induced jamming or shaft scoring.
High Load via Surface Contact
Surface contact distributes load over a larger area than ball-point contact, giving higher static and dynamic ratings per bore size.
Maintenance-Free
No lubrication required for normal duty. Eliminates centralised lubrication systems.
Food & Pharma Compatible
Approved for food-contact use. Washable with alkaline sanitisers. No grease contamination risk.
−50°C to +90°C
Full temperature range. Suitable for cold-store and oven-adjacent applications.
Replaceable Element
Membrane replaced independently of housing — significantly lower service cost than replacing a complete ball bearing unit.
📋 Complete Specification Table
ⓘ Inner bore d1 in mm. Tolerance shown is for d1. Housing bore H7. Weight in grams. Friction coefficient 0.05–0.15 (dry, steel shaft).
| Inner Dia d1 (mm) | Tolerance | Outer Dia d2 (mm) | Width b1 (mm) | Corner r (mm) | Weight (g) |
|---|---|---|---|---|---|
| LIN-01-10 | +0.030/-0.070 | 12 | 29 | 3.0 | 1.3 |
| LIN-01-12 | +0.030/-0.070 | 14 | 31 | 3.0 | 1.6 |
| LIN-01-16 | +0.030/-0.070 | 18 | 35 | 3.5 | 2.2 |
| LIN-01-20 | +0.030/-0.070 | 23 | 44 | 5.0 | 5.0 |
| LIN-01-25 | +0.030/-0.070 | 28 | 57 | 5.0 | 8.0 |
| LIN-01-30 | +0.040/-0.085 | 34 | 67 | 5.0 | 15.1 |
| LIN-01-40 | +0.040/-0.085 | 44 | 79 | 6.0 | 25.6 |
| LIN-01-50 | +0.050/-0.100 | 55 | 99 | 7.0 | 50.6 |
🔭 Materials & Performance Data
The LIN sliding membrane is a proprietary high-performance plastic with density 1.48 g/cm³ and kinetic friction coefficient 0.05–0.15 against steel (dry). Max PV value (dry) 0.4 N/mm²·m/s, continuous temperature −50°C to +90°C, short-term peak +120°C. Tensile strength 75 MPa (ISO 527), compressive strength 60 MPa, elastic modulus 2,400 MPa, Rockwell hardness HRR 107. The spiral groove pattern on the membrane bore expels contaminants axially rather than allowing accumulation — the key advantage over ball linear bearings in dusty environments. The aluminium housing is anodised for corrosion resistance.
Max PV (Dry)
0.4 N/mm²·m/s. Kinetic friction 0.05–0.15 against steel without lubrication. Higher PV possible with lubrication.
Temperature Range
Continuous −50°C to +90°C. Short-term peak +120°C. Cold-start capable at −50°C without special preparation.
No Lubrication Required
Dry-running design suitable for food, pharmaceutical, and medical applications where lubricant contamination is prohibited.
Chemical Resistance
Resistant to alkaline detergents, dilute acids, mineral oils, and common industrial solvents. Washable with food-industry sanitisers.
🏭 Typical Applications
Food Processing
Filling nozzles, portioning conveyors, and packaging lines where lubricant-free and wash-down resistance are mandatory.
Medical Devices
Syringe pump drives, infusion carriages, and diagnostic stages requiring dry motion without contamination.
Textile Machinery
Rapier and gripper mechanisms in lint-contaminated environments where ball bearings would jam — spiral grooves expel fibres continuously.
General Automation
Any linear guidance in dusty, humid, or chemically aggressive environments where ball bearing maintenance intervals are too short.
🔧 Installation & Maintenance
🔎 Housing Bore
H7 tolerance. Press membrane in using press tool on end face only. Do not use adhesive.
🔧 Shaft Specification
Ground to h6, Ra 0.8 µm or better. No hardness requirement — stainless, aluminium, and plastic shafts all acceptable.
🌡 Break-in Period
New membranes have a break-in of ~50 km travel during which friction is slightly higher. Reduces automatically as bore conforms to shaft.
📈 Load & PV Check
Verify applied load P against maximum load table. Confirm PV = P × v ≤ 0.4 N/mm²·m/s at all operating speeds.
🔎 Selection Guide
Select the bore to match shaft nominal diameter. Verify d2 matches housing H7 bore. Confirm PV = (F/A) × v ≤ 0.4 N/mm²·m/s.
①
Confirm Environment
Confirm the application requires dry-running or food-grade capability that makes ball linear bearings unsuitable.
②
Select Bore & Type
Match d1 bore to shaft nominal diameter. Verify d2 fits housing H7 bore. Select b1 to suit housing depth.
③
Verify Load & PV
Calculate PV = (F/A) × v where A = π × d1 × b1. PV must not exceed 0.4 N/mm²·m/s dry.
④
Contact Us
MOQ 100 units. Contact our team with shaft diameter, housing bore, load, speed, stroke, and environment details.
❓ Frequently Asked Questions
📞 Ready to Order?
MOQ is 100 units per model. Provide shaft diameter, housing bore tolerance, applied load, traverse speed, stroke, and operating environment. All catalogue data is for reference only.
LIN-01 — 8 bore sizes · Dry-running · Maintenance-free · Split type.
MOQ: 50 pcs. Minimum order value USD 1,500; mixed orders and trial quantities welcome.
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