BM Size 15 Technical Specifications
Compact Solution for Micro Precision Equipment
Rail Types BM S 15
| BM S 15-NU | BM S 15-CD |
|---|---|
 |  |
| Tapped Holes at Bottom Tapped holes at bottom | Through-Hardened Cover Strip Cover strip, through-hardened |
Rail Dimensions BM S 15
Rail Specifications BM S 15
| Parameter | BM S 15-N | BM S 15-NU | BM S 15-CD |
|---|---|---|---|
| Rail Width B1 (mm) | 15 | 15 | 15 |
| Rail Height J1 (mm) | 15.7 | 15.7 | 15.7 |
| Max Single Piece Length L3 (mm) | 3000 | 3000 | 1500 |
| Mounting Hole Pitch L4 (mm) | 60 | 60 | 60 |
| First/Last Hole Position L5/L10 (mm) | 28.5 | 28.5 | 28.5 |
| Rail Weight (kg/m) | 1.4 | 1.4 | 1.3 |
Carriage Types BM W 15
| BM W 15-A / B | BM W 15-C / D | BM W 15-F / G | BM W 15-J / K |
|---|---|---|---|
 |  |  |  |
| Standard / Standard Long Standard / Standard long | Compact High / Compact High Long Compact high / long | Compact / Compact Long Compact / Compact long | Short / Short Narrow Short / Short narrow |
Carriage Dimensions BM W 15
Carriage Specifications BM W 15
| Parameter | BM W 15-A | BM W 15-B | BM W 15-C | BM W 15-D | BM W 15-F | BM W 15-G | BM W 15-J | BM W 15-K |
|---|---|---|---|---|---|---|---|---|
| System Height A (mm) | 24 | 24 | 28 | 28 | 24 | 24 | 24 | 24 |
| Carriage Width B (mm) | 47 | 47 | 34 | 34 | 34 | 34 | 52 | 34 |
| Reference Surface Distance B2 (mm) | 16 | 16 | 9.5 | 9.5 | 9.5 | 9.5 | 18.5 | 9.5 |
| Front Center Lube Hole Position C1 (mm) | 4 | 4 | 8 | 8 | 4 | 4 | 4 | 4 |
| Side Lube Hole Position C3 (mm) | 4 | 4 | 8 | 8 | 4 | 4 | 4 | 4 |
| Side Lube Hole Position C4 (mm) | 9.3 | 17.3 | 9.3 | 17.3 | 9.3 | 17.3 | 4.8 | 4.8 |
| Top Lube Hole Position C7 (mm) | 9.3 | 17.3 | 9.3 | 17.3 | 9.3 | 17.3 | 4.8 | 4.8 |
| Carriage Height J (mm) | 20.4 | 20.4 | 24.4 | 24.4 | 20.4 | 20.4 | 20.4 | 20.4 |
| Carriage Length L (mm) | 57.6 | 73.5 | 57.6 | 73.5 | 57.6 | 73.5 | 38.6 | 38.6 |
| Outer Mounting Hole Pitch L1 (mm) | 30 | 30 | 26 | 26 | 26 | 26 | — | — |
| Inner Mounting Hole Pitch L2 (mm) | 28 | 28 | — | — | — | — | — | — |
| Steel Body Length L6 (mm) | 39.6 | 55.5 | 39.6 | 55.5 | 39.6 | 55.5 | 20.6 | 20.6 |
| Lateral Mounting Hole Pitch N (mm) | 38 | 38 | 26 | 26 | 26 | 26 | 43 | 26 |
| Reference Surface Height O (mm) | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 |
| Carriage Weight (kg) | 0.2 | 0.3 | 0.3 | 0.3 | 0.2 | 0.2 | 0.1 | 0.2 |
Rigidity Curve and Load Ratings
Load Ratings
| Carriage Type | C₀ Static Load (N) | C₁₀₀ Dynamic Load (N) | M₀Q Static Cross Moment (Nm) | M₀L Static Long. Moment (Nm) | MQ Dynamic Cross Moment (Nm) | ML Dynamic Long. Moment (Nm) |
|---|---|---|---|---|---|---|
| A / C / F | 19,600 | 9,000 | 181 | 146 | 83 | 67 |
| B / D / G | 22,900 | 11,400 | 218 | 198 | 108 | 96 |
| J / K | 8,500 | 5,200 | 78 | 30 | 48 | 18 |
Load Rating Definitions
- C₀ = Static load capacity
- C₁₀₀ = Dynamic load capacity - 100km travel life
- M₀Q / MQ = Cross moment (lateral)
- M₀L / ML = Longitudinal moment
Available Options
Accuracy Classes
| Accuracy Class | Carriage/Rail Tolerance A/B2 | Matched Carriage Max Deviation ΔA/ΔB2 | Standard Carriage Max Deviation |
|---|---|---|---|
| G0 Highly Accurate | ± 5 µm | 3 µm | 10 µm |
| G1 Very Accurate | ± 10 µm | 5 µm | 20 µm |
| G2 Accurate | ± 20 µm | 7 µm | 40 µm |
| G3 Standard | ± 30 µm | 25 µm | 60 µm |
Preload Classes
| Preload Class | Preload Force (% of C₀) | Application |
|---|---|---|
| V0 Extra Light Preload | 0-2% | Extremely low friction, uniform load, minimal vibration |
| V1 Light Preload | 3% | Low friction, uniform load, slight vibration |
| V2 Medium Preload | 8% | High rigidity, moderate variable load and vibration |
| V3 High Preload | 13% | Maximum rigidity, impact loads, highly variable loads |
Lubrication as Delivered
| Code | Type | Description | Application |
|---|---|---|---|
| LN | Oil Protect | Light oiling | Applications with continuous oil supply after installation |
| LG | Grease Protect | Thin grease layer | Applications with continuous grease supply after installation |
| LV | Full Greasing | Complete grease fill | Manual lubrication applications |
Surface Treatment (Coating)
| Code | Type | Features |
|---|---|---|
| — | Standard (No Coating) | Standard steel surface |
| CN | Hard Chromium | Excellent corrosion protection, high wear resistance, good emergency running properties |
| CH | Black Oxide | Enhanced rust protection |
Reference Side
R1 - Reference at Bottom R2 - Reference on Top
Order Code Examples
Rail Order Code
BM S 15-N-G1-KC-R1-500-28.5-28.5
- BM S 15 = MONORAIL Ball Profile Rail Size 15
- N = Standard (top mounting)
- G1 = Very Accurate
- KC = Countersunk mounting holes
- R1 = Reference at bottom
- 500 = Rail length 500mm
- 28.5-28.5 = First/last hole positions
Carriage Order Code
BM W 15-A-V1-S11-LV-CN
- BM W 15 = MONORAIL Ball Profile Carriage Size 15
- A = Standard carriage
- V1 = Light preload
- S11 = Lubrication port position (top center)
- LV = Full greasing
- CN = Hard chromium coating