The WLA series provides a rigid connecting-sleeve arrangement for shaft ends with greater separation than the compact W layout. Its connecting sleeve can be adapted to the application where required. The listed WLA015–WLA260 entries give shaft alternatives, torque, axial-force rating, dimensions, screw details, shaft pressure and weight for the specified catalog construction.
Series configuration
| Item | Series-specific information |
|---|---|
| Series / catalog types | WLA; WLA015, WLA020, WLA025, WLA030, WLA035, WLA040, WLA050, WLA060, WLA070, WLA080, WLA090, WLA100, WLA110, WLA120, WLA130, WLA140, WLA150, WLA160, WLA180, WLA200, WLA220, WLA240, WLA260 |
| Shaft-diameter range | 13–270 mm in the listed catalog entries |
| Torque-only catalog range | 70–465,000 Nm in the listed catalog entries |
| Connection | Rigid, backlash-free frictional shaft connection |
| Shaft spacing | Confirm the sleeve and shaft insertion on the product drawing |
| Catalog ordering example | TAS WLA200/150/200 |
Clamping principle and load path
The rigid connection uses external pressure rings or shrink discs to press a connecting sleeve onto the shaft ends. The sleeve carries the transmitted load between the shafts. The external clamping components generate radial pressure and supply the clamping force; they are outside the torque load path. The coupling is installed by sliding it onto the shaft ends and tightening the external clamping systems according to the product instructions.
Construction and installation envelope
The WLA construction uses a sleeve with two DG pressure rings and separate screw arrangements at the ends. The screw-quantity heading in the catalog is marked 2x. In the table below, Z is retained as the quantity per set, with two sets indicated. This differs from simply treating Z as the total fastener count for a through-bolt arrangement. Confirm the exact quantity and screw installation from the selected drawing.
Complete printed catalog data
Options separated by slashes are paired in the same left-to-right order across d_w, M_max, F_ax and p_w. Dimensions, screw details and weight belong to the nominal type in that row. M_max applies at F_ax = 0, and F_ax applies at M_t = 0. Decimal commas are written as decimal points. Entries are reproduced from the printed catalog; any specific verification notes below remain part of the selection information.
| Type | d_w options (mm) | M_max, matching order (Nm) | F_ax at M_t=0, matching order (kN) | D (mm) | L (mm) | H (mm) | A (mm) | M_A (Nm) | Z per set (2x sets) | Screw S | DIN | Class | p_w, matching order (N/mm²) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WLA015 | 13 / 15 / 17 | 70 / 150 / 180 | 11 / 20 / 21 | 55 | 50 | 53 | 37 | 6 | 7 | M5 x 25 | 933 | 10.9 | 83 / 126 / 160 | 0.5 |
| WLA020 | 18 / 20 / 22 | 200 / 270 / 350 | 22 / 27 / 31 | 60 | 54 | 57 | 42 | 12 | 8 | M6 x 30 | 931 | 10.9 | 213 / 241 / 266 | 0.7 |
| WLA025 | 23 / 25 / 27 | 370 / 470 / 600 | 32 / 37 / 44 | 66 | 62 | 65 | 48 | 12 | 8 | M6 x 30 | 931 | 10.9 | 178 / 197 / 214 | 0.8 |
| WLA030 | 28 / 30 / 32 | 540 / 670 / 750 | 38 / 44 / 46 | 76 | 70 | 73 | 54 | 12 | 10 | M6 x 35 | 931 | 10.9 | 164 / 165 / 179 | 1.3 |
| WLA035 | 33 / 35 / 37 | 750 / 900 / 1050 | 45 / 51 / 56 | 80 | 75 | 79 | 62 | 12 | 12 | M6 x 35 | 931 | 10.9 | 168 / 180 / 190 | 1.5 |
| WLA040 | 38 / 40 / 43 | 1250 / 1550 / 1850 | 65 / 77 / 86 | 98 | 80 | 84 | 71 | 30 | 8 | M8 x 40 | 931 | 10.9 | 175 / 184 / 196 | 2.5 |
| WLA050 | 44 / 50 / 54 | 2200 / 3300 / 3800 | 100 / 132 / 140 | 115 | 90 | 94 | 86 | 59 | 8 | M10 x 45 | 931 | 10.9 | 189 / 200 / 212 | 4 |
| WLA060 | 55 / 60 / 64 | 4050 / 5100 / 6100 | 147 / 170 / 190 | 125 | 120 | 124 | 98 | 59 | 10 | M10 x 50 | 931 | 10.9 | 177 / 190 / 198 | 5.3 |
| WLA070 | 65 / 70 / 74 | 6500 / 8200 / 9000 | 200 / 234 / 243 | 148 | 140 | 142 | 112 | 59 | 12 | M10 x 60 | 931 | 10.9 | 172 / 181 / 188 | 8.4 |
| WLA080 | 75 / 80 / 84 | 10500 / 12300 / 14000 | 280 / 307 / 333 | 170 | 170 | 175 | 130 | 100 | 12 | M12 x 70 | 931 | 10.9 | 73 / 186 / 192 | 13.1 |
| WLA090 | 85 / 90 / 94 | 14200 / 16400 / 18000 | 334 / 364 / 383 | 185 | 200 | 202 | 145 | 250 | 7 | M16 x 80 | 931 | 10.9 | 166 / 173 / 177 | 17 |
| WLA100 | 95 / 100 / 104 | 19100 / 23100 / 26000 | 402 / 462 / 500 | 200 | 210 | 215 | 158 | 250 | 9 | M16 x 90 | 931 | 10.9 | 186 / 191 / 195 | 21 |
| WLA110 | 105 / 110 / 114 | 28500 / 32000 / 35000 | 542 / 581 / 614 | 217 | 220 | 222 | 170 | 250 | 12 | M16 x 90 | 931 | 10.9 | 214 / 218 / 221 | 27 |
| WLA120 | 115 / 120 / 124 | 38500 / 43500 / 46000 | 669 / 725 / 742 | 235 | 230 | 235 | 184 | 250 | 13 | M16 x 90 | 931 | 10.9 | 199 / 200 / 204 | 33 |
| WLA130 | 125 / 130 / 134 | 47500 / 55000 / 58000 | 760 / 846 / 865 | 267 | 240 | 242 | 206 | 490 | 10 | M20 x 110 | 931 | 10.9 | 196 / 199 / 202 | 45 |
| WLA140 | 135 / 140 / 144 | 62000 / 67000 / 71000 | 918 / 957 / 986 | 280 | 250 | 252 | 218 | 490 | 11 | M20 x 110 | 931 | 10.9 | 194 / 196 / 198 | 55 |
| WLA150 | 145 / 150 / 154 | 73000 / 78000 / 82000 | 1006 / 1040 / 1065 | 302 | 265 | 267 | 230 | 490 | 12 | M20 x 120 | 931 | 10.9 | 186 / 188 / 190 | 70 |
| WLA160 | 155 / 160 / 165 | 82000 / 88000 / 97000 | 1058 / 1100 / 1175 | 315 | 280 | 285 | 242 | 490 | 13 | M20 x 120 | 931 | 10.9 | 180 / 182 / 184 | 80 |
| WLA180 | 166 / 180 / 185 | 108000 / 132000 / 140000 | 1301 / 1465 / 1513 | 345 | 310 | 312 | 265 | 490 | 16 | M20 x 130 | 931 | 10.9 | 179 / 181 / 183 | 105 |
| WLA200 | 186 / 200 / 210 | 153000 / 184000 / 204000 | 1645 / 1840 / 1943 | 375 | 350 | 355 | 295 | 490 | 20 | M20 x 150 | 931 | 10.9 | 174 / 178 / 182 | 135 |
| WLA220 | 211 / 220 / 230 | 214000 / 240000 / 260000 | 2028 / 2180 / 2260 | 410 | 390 | 392 | 320 | 840 | 18 | M24 x 160 | 931 | 10.9 | 191 / 193 / 196 | 180 |
| WLA240 | 231 / 240 / 250 | 280000 / 305000 / 334000 | 2424 / 2540 / 2672 | 435 | 430 | 435 | 350 | 840 | 20 | M24 x 180 | 931 | 10.9 | 182 / 184 / 185 | 210 |
| WLA260 | 251 / 260 / 270 | 390000 / 425000 / 465000 | 3108 / 3270 / 3444 | 515 | 450 | 452 | 380 | 1250 | 20 | M27 x 200 | 931 | 10.9 | 204 / 206 / 208 | 345 |
Series-specific data notes
The longer sleeve changes the installation envelope and shaft-end spacing arrangement. For example, WLA060 lists sleeve length L = 120 mm and coupling width H = 124 mm, compared with 70 mm and 74 mm for the W060 compact entry. The corresponding series-specific table must therefore be used even when a torque value appears similar.
Configuration details
Do not infer WLA screw lengths from the WLB range. WLA uses the end clamping arrangement shown on its own drawing, while WLB lists longer screws for its different construction. Shaft-pressure entries can also differ between nominally similar W, WLA and WLB rows. Retain the complete series prefix in the purchase and maintenance documentation.
Technical symbols and rating conditions
| Symbol | Meaning / rating condition |
|---|---|
| d_w | Shaft diameter |
| M_max | Maximum transmittable torque with F_ax = 0 |
| F_ax | Maximum transmittable axial force with M_t = 0 |
| D | Outer diameter of the coupling |
| L | Connecting-sleeve length |
| H | Coupling width where given; catalog dimensions are for the unlocked condition |
| A | Screw pitch-circle diameter |
| M_A | Required clamping-screw tightening torque |
| Z / S | Screw quantity as listed / screw size |
| p_w | Average contact pressure on the shaft |
Rigid connection and shaft alignment
These are rigid couplings and cannot compensate shaft misalignment. Align the shafts accurately before assembly. The drive or gearbox arrangement needs suitable elastic support elsewhere in the drivetrain to accommodate shocks, deformation and vibration. A longer connecting sleeve provides a different shaft-spacing arrangement; it does not turn the coupling into a flexible or misalignment-compensating element.
Combined loads and shaft stiffness
M_max is stated for torque transmission with zero axial force. F_ax is stated for axial loading with zero torque. The two maxima cannot be applied simultaneously as independent allowances. Where torque, axial load and bending occur together, assess their combined effect and check each operating case. Rotating bending is a dynamic load case; a static torque-only review does not cover it.
A hollow shaft has lower radial stiffness than a comparable solid shaft, which can change contact pressure, deformation and transmittable torque. Include any shaft bore and material properties in the calculation. The catalog also addresses stress concentrations and contact conditions, so a diameter-and-torque match alone is not the complete design check.
Recommended fits and surface roughness
These are the diameter intervals and recommendations given in the basic-design table. They do not extend the available sizes of this series. If a needed diameter interval or tolerance is not stated, confirm the application-specific requirement rather than extrapolating the table.
| Shaft diameter > (mm) | Shaft diameter ≤ (mm) | F_S,max (mm) | Hub / shaft fit | Rz (µm) |
|---|---|---|---|---|
| 30 | 50 | 0.032 | H6/h6 | 10 |
| 50 | 80 | 0.049 | H7/h6 | 10 |
| 80 | 120 | 0.057 | H7/h6 | 16 |
| 120 | 150 | 0.065 | H7/h6 | 16 |
| 150 | 180 | 0.079 | H7/g6 | 16 |
| 180 | 250 | 0.090 | H7/g6 | 16 |
| 250 | 315 | 0.101 | H7/g6 | 16 |
| 315 | 400 | 0.111 | H7/g6 | 16 |
| 400 | 500 | 0.123 | H7/g6 | 25 |
| 500 | 630 | 0.136 | H7/g6 | 25 |
Assembly surfaces and positioning
The contact surfaces at the shaft ends must be clean, dry and free of grease. The functional surfaces of the external clamping system, the screw threads and the under-head bearing surfaces have their specified lubrication requirements. The coupling is supplied ready for installation, but the shaft surfaces and the final assembly still need to satisfy the selected product procedure. Keep the shaft friction surfaces separate from the lubricated screw and clamping surfaces.
The cylindrical clearance arrangement permits positioning of the sleeve on the shaft ends. The catalog describes no subsequent axial shift during clamping. Confirm adequate insertion beneath the pressure rings or shrink discs and locate the shaft contact regions as required by the product drawing. Follow the documented tightening and release sequence for the selected external clamping system.
Applications and special versions
Typical application areas include marine drives, materials handling, mixing and process machinery and industrial drive systems requiring a rigid shaft-end connection. Longer sleeve arrangements can be adapted to shaft spacing, while special dimensions, corrosion protection and surface finishes can be specified by arrangement. An adapted version requires its own drawing and load check.
Ordering information
Specify the complete series and nominal type, both shaft-end dimensions and tolerances, shaft materials, actual shaft-end spacing, torque, speed, axial and bending loads and the load spectrum. Include assembly and removal access, required surface finish, corrosion protection and any special dimensions. Confirm the item-specific drawing and installation instructions, especially for adapted bores or sleeves, before using a catalog value as the final equipment specification.