LIN-11GL Series — Long Design Pillow Block Linear Bearing Unit Plastic Sliding
LIN-11GL — 5 bore sizes · Long double-bearing · Higher moment resistance · Dry running.
MOQ: 50 pcs. Minimum order value USD 1,500; mixed orders and trial quantities welcome.
Linear Bearings › LIN Plastic Series
LIN-11GL Series — Long Design Pillow Block Linear Bearing Unit Plastic Sliding
5 bore sizes · Long double-bearing · Higher moment resistance · Dry running
🆕 Series Overview
The LIN-11GL is the long-design variant of LIN-11G, containing two LIN-01R plastic linear bearings separated by a spacer in a single extended housing. The two-bearing configuration substantially increases resistance to moment loads compared with the single-bearing LIN-11G.
Available in 5 bore sizes from 16 mm to 40 mm. Both internal LIN-01R membranes are replaceable independently without removing the housing from the machine.
⚙ Key Design Features
Two-Bearing Long Housing
Two LIN-01R bearings separated by spacer. Significantly higher moment-load resistance than single-bearing LIN-11G.
5 Bore Sizes
16 mm to 40 mm covering the main diameters where extended bearing span is typically required.
Moment Load Resistance
Longer span improves resistance to pitching and yawing moments from offset loads and long-stroke traversal.
Dry Running
Two LIN-01R membranes. No lubrication. Both replaceable in situ.
Anodised Aluminium
Corrosion-resistant long housing for wet and chemically aggressive environments.
Independent Replacement
Each internal LIN-01R membrane replaced independently when worn.
📋 Complete Specification Table
ⓘ All dimensions in mm. Housing L is overall length including two bearings and spacer. Shaft tolerance h6.
| Bearing | Shaft (mm) | h | D | W | H | G | A | J | E | S1 | K | L |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2×LIN-11R-16 | 16 | 19 | 25 | 50 | 38.5 | 32.5 | 9 | 36 | 7 | M5x12 | 34 | 89 |
| 2×LIN-11R-20 | 20 | 21 | 27 | 54 | 41 | 35 | 11 | 40 | 7 | M6x12 | 40 | 106 |
| 2×LIN-11R-25 | 25 | 26 | 38 | 76 | 51.5 | 41 | 12 | 54 | 11 | M8x18 | 50 | 136 |
| 2×LIN-11R-30 | 30 | 30 | 39 | 78 | 59.5 | 49 | 15 | 58 | 10 | M8x18 | 58 | 154 |
| 2×LIN-11R-40 | 40 | 40 | 51 | 102 | 78 | 62 | 20 | 80 | 11 | M10x25 | 80 | 180 |
🔭 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
Cantilevered Carriage Guidance
Carriages with tooling mounted at offset from bearing centreline — long housing resists the resulting moment load.
Long-Stroke Linear Axes
Guidance for long traverse distances where single bearing would yaw under lateral forces.
Heavy Conveyor Side Guides
Wide conveyors with tall product loads creating significant pitching moment on guide bearings.
Large Medical Device Stages
Horizontal positioning stages where cantilevered detector or treatment heads create moment loads.
🔧 Installation & Maintenance
🔎 Base Mounting
Flat base within 0.05 mm. Tighten four bolts in diagonal sequence. Verify housing is not rocking before inserting shaft.
🔧 Shaft Insertion
h6, Ra 0.8 µm. Insert through both internal bearings — both bores pre-aligned at factory within housing.
📈 Alignment
Align twin-shaft systems parallel within 0.02 mm per 100 mm.
✅ Membrane Replacement
Replace one or both internal LIN-01R membranes independently. Remove shaft, access each position through housing ends, press out worn, press in new.
🔎 Selection Guide
Select LIN-11GL when moment loads from offset payloads or long strokes exceed standard LIN-11G capability. Verify long housing length L fits machine frame space.
①
Confirm Environment
Confirm moment loads are present. If only radial loads, standard LIN-11G is sufficient and more compact.
②
Select Bore & Type
Match bore to shaft. Verify long housing L and W fit the machine frame mounting zone.
③
Verify Load & PV
Verify radial load F ≤ dynamic rating. For moment loads, calculate bearing reactions from moment and span — each reaction within individual bearing rating.
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-11GL — 5 bore sizes · Long double-bearing · Higher moment resistance · Dry running.
MOQ: 50 pcs. Minimum order value USD 1,500; mixed orders and trial quantities welcome.
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