LIN-01K Series Sliding Membrane — Split Type with Keyway Plastic Linear Bearing
LIN-01K — 8 bore sizes · Keyway slot · Anti-rotation · Dry running.
MOQ: 50 pcs. Minimum order value USD 1,500; mixed orders and trial quantities welcome.
Linear Bearings › LIN Plastic Series
LIN-01K Series Sliding Membrane — Split Type with Keyway Plastic Linear Bearing
8 bore sizes · Keyway slot · Anti-rotation · Dry running
🆕 Series Overview
The LIN-01K series adds a keyway slot (W dimension) to the outer surface of the standard LIN-01 membrane. A corresponding key or projection in the housing engages this slot to prevent the membrane from rotating during rotary or combined linear-rotary motion.
All bore dimensions, tolerances, material properties, and PV limits are identical to LIN-01. The keyway adds only the W dimension to the outer surface. LIN-01K is specified wherever the shaft rotates during or between linear strokes — screw-driven actuators, cam mechanisms, or any combined motion system.
⚙ Key Design Features
Keyway Anti-Rotation
External keyway engages housing key to prevent membrane rotation. Essential for combined linear-rotary or oscillating-rotary applications.
Same Load as LIN-01
All bore dimensions and load ratings identical to LIN-01 — keyway adds only outer geometry.
Spiral Groove Design
Same contamination-expulsion groove as LIN-01. Dry-running, maintenance-free, food-grade compatible.
Chemical Resistance
Identical material to LIN-01 — resists alkaline cleaners, mineral oils, and common industrial chemicals.
−50°C to +90°C
Same as LIN-01 standard series. Full industrial temperature range.
Replaceable
Membrane replaced independently of housing. Housing keyway is permanent and accepts replacement LIN-01K membranes.
📋 Complete Specification Table
ⓘ d1 = inner bore, d2 = outer diameter, b1 = length, W = keyway width on OD. Housing bore H7. Weight in grams.
| Inner Dia d1 (mm) | Tolerance | Outer Dia d2 (mm) | Width b1 (mm) | Keyway W (mm) | Corner r (mm) | Weight (g) |
|---|---|---|---|---|---|---|
| LIN-01K-10 | +0.030/-0.070 | 12 | 29 | 7.3 | 3.0 | 1.0 |
| LIN-01K-12 | +0.030/-0.070 | 14 | 31 | 9.0 | 3.0 | 1.3 |
| LIN-01K-16 | +0.030/-0.070 | 18 | 35 | 11.6 | 3.5 | 1.9 |
| LIN-01K-20 | +0.030/-0.070 | 23 | 44 | 12.0 | 5.0 | 4.5 |
| LIN-01K-25 | +0.030/-0.070 | 28 | 57 | 14.5 | 5.0 | 7.5 |
| LIN-01K-30 | +0.040/-0.085 | 34 | 67 | 16.6 | 5.0 | 14.5 |
| LIN-01K-40 | +0.040/-0.085 | 44 | 79 | 21.0 | 6.0 | 24.5 |
| LIN-01K-50 | +0.050/-0.100 | 55 | 99 | 25.5 | 7.0 | 49.0 |
🔭 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
Combined Linear-Rotary Actuators
Screw-driven stages, cam mechanisms, and rotary-linear pick-and-place heads where the shaft both slides and rotates simultaneously.
Oscillating Rotary + Linear
Spring-return mechanisms where the shaft oscillates rotationally at the end of each linear stroke.
Anti-Ejection Linear
Applications where axial thrust loads risk expelling the membrane — keyway provides positive axial and rotational retention.
Precision Adjusters
Micrometer and fine-adjustment mechanisms requiring combined linear and rotary guidance without backlash.
🔧 Installation & Maintenance
🔎 Housing Keyway
Machine matching keyway in housing bore. Key width tolerance ±0.05 mm for free-sliding fit without excessive play.
🔧 Shaft Specification
h6, Ra 0.8 µm. No hardness requirement. Identical to LIN-01.
🔁 Keyway Orientation
Orient keyway away from peak load direction — keyway interrupts contact area slightly on one side.
📈 Load Verification
Load ratings identical to LIN-01. PV = (F/A) × v ≤ 0.4 N/mm²·m/s.
🔎 Selection Guide
Select LIN-01K when shaft rotation or combined rotary-linear motion is present, or when axial thrust risks membrane ejection. Housing must be machined with matching keyway.
①
Confirm Environment
Confirm shaft rotation or combined motion is present — if purely linear, use LIN-01 without keyway complexity.
②
Select Bore & Type
Match d1 bore to shaft. Verify housing has machined keyway matching W dimension for selected bore.
③
Verify Load & PV
PV identical to LIN-01: PV = (F/A) × v ≤ 0.4 N/mm²·m/s. Load ratings are the same as LIN-01.
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-01K — 8 bore sizes · Keyway slot · Anti-rotation · Dry running.
MOQ: 50 pcs. Minimum order value USD 1,500; mixed orders and trial quantities welcome.
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