See other catalogues for
KHK
You may also be interested in
Text version of the page
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | |
| | | IIT Worm Gear Pair | | |
| | | |
| | | Selection Hints | | |
| | | |
| | | Please select the most suitable products by carefully considering the characteristics of items and contents of the product tables. It is also important to read all applicable "CAUTION" notes shown below before the final selection. Use of catalog numbers when ordering will simplify and expedite the processing of your order. 1. Caution in Selecting the Mating Gears ■ The Helixes of Worms and Worm Wheels | | |
| | | |
| | | Worms and worm wheels have either right-hand or left-hand helix. The same hand worms and worm wheels comprise sets. However, the number of threads and whether they use normal module or axial module system must also be matched. The table below shows available combinations of KHK stock worms and worm wheels. ■ Mating Worm Wheels Selection Chart | | |
| | | |
| | | | | | | | | | | | | | | | | | | | | | Worm | KWGDL KWGDLS | KWG | SWG | SW | SUW | | | | Mating Worm Wheel NOTE 1 | | RI | RI | R2 | RI | R2 | R3 | RI | R2 | LI | L2 | RI | R2 | | | | AGDL | M | o | | | | | | | | | | | | | | | AG0.5~1.5 AGF | RI | | o | | | | | | | | | | | | | | R2 | | | o | | | | | | | | | | | | | AG | RI | | | | o | | | | | | | | | | | | R2 | | | | | o | | | | | | | | | | | R3 | | | | | | o | | | | | | | | | | BG | RI | | | | | | | o | | | | o | | | | | R2 | | | | | | | | o | | | | o | | | | LI | | | | | | | | | o | | | | | | | L2 | | | | | | | | | | o | | | | | | CG | RI | | | | | | | o | | | | o | | | | | R2 | | | | | | | | o | | | | o | | | | LI | | | | | | | | | o | | | | | | | L2 | | | | | | | | | | o | | | | | | PG | RI | | | | | | | o | | | | o | | | | | R2 | | | | | | | | o | | | | o | | | | DG | RI | | | | | | | o | | | | o | | | | | R2 | | | | | | | | o | | | | o | | | | | | | | | | | | | | | | | | | | | |
| | | |
| | | [NOTE 1] Select the same module for both members. | | |
| | | |
| | | 2. Caution in Selecting Gears Based on Gear Strength | | |
| | | |
| | | The gear strength values shown in the product pages were computed by assuming a certain application environment as shown below. Therefore, they should be used as reference only. We recommend that each user computes their own values by applying the actual usage conditions. ■ Calculation assumptions for Surface Durability ■ Calculation assumptions for Bending Strength | | |
| | | |
| | | | | | | | | | | | | | "^^^^ Catalog No. Item | KWGDL-KWGDLS/AGDL KWG/AGF, SWG/AG | SW/BG | SW/CG | SUW/PG | SUW/DG | | | | Formula note 2 | Formula of worm gear's strength(JGMA405-01) | The Lewis formula | | | | Rotations of worm | 600rpm | 100rpm | Allowable bending stress (kgf/mm2) | | | | Lubricant | Lubricant for gears with proper viscosity and with anti-pressure additives | 1.15 (40OC with No Lubrication) | note 3 1 (40OC with No Lubrication) | | | | Lubrication | Oil bath | | | | Starting condition | Starting torque less than 200% of rated torque. Less than 2 starts per hour | | | | Durability | 26000 hours | | | | Impact from motor | Uniform load | | | | Impact from load | Uniform load | | | | Allowable stress factor Sdim | 0.67 | 0.70 | 0.42 | | | | | | | | | | | | | |
| | | |
| | | [NOTE 2] The gear strength formula is based on JGMA (Japanese Gear Manufacturer's Association) specifications and "MC Nylon Technical Data" by Nippon Polypenco Limited. The units for the rotational speed (rpm) and the stress (kgf/mm2) are adjusted to the units needed in the formula. [NOTE 3] Allowable bending stress of DG worm wheel Is the value we estimated. | | |
| | | |
| | | ■ The Maximum Allowable Sliding Speed Due to Heat | | |
| | | |
| | | | | | | | | | | Catalog No. | Max. Sliding Speed (m/s) | | | | AGDL | * | 15 | | | | AGF | * | 15 | | | | AG | * | 15 | | | | BG | * | 5 | | | | CG | * | 2.5 | | | | PG | 1 (no lubrication) | | | | | | | | | | |
| | | The maximum allowable sliding speed for each series of worm wheels is given pn the right. Select the appropriate part by calculating the sliding speed. Sliding speed vs (m/s) | | |
| | | |
| | | d n 19100 cos y | | d :Worm pitch dia. n :Worm speed (rpm) | | |
| | | |
| | | |
| | | r : Worm nominal lead angle | | |
| | | |
| | | * JGMA405-01 | | |
| | | |
| | | |
| | | | | |
| | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |