TSUBAKI Unit Products
Pin Gear Drive Unit
Tsubaki Pin Gear Drive Units are a new drive system that replace gears and racks. Consisting of a pin wheel and rack, and a gear with a unique tooth profile, Pin Gear Drive Units offer limitless design possibilities for rotating and linear drives.
Large Pin Gear Drive Units now available. (February 2017)
Features
Simple installation
Uses a segmented system for easy installation. Rough mounting precision is allowed.
Large transmission torque
Pin gears are designed as modules with some leeway. The right balance between pin wheels and racks allow them to generate large transmission torque.
Can be used on large equipment
Just increase the number of wheel segments to enable use on large equipment drives.
Large sizes perfect for the steel industry are now available.
Large Pin Gear Drive Units are now available. They outperform large gears in terms of cost and tangential force.
List of standard specs
| Pitch mm | Standard Series (Steel) | |||
|---|---|---|---|---|
| Frame no. | Allowable tangential loads | |||
| kN | {kgf} | |||
| Allowable tangential loads | 20 | PDU20 | 4.7 | 480 |
| 22 | PDU22 | 7.7 | 780 | |
| 30 | PDU30 | 12.8 | 1300 | |
| 35 | PDU35 | 19.5 | 1990 | |
| 40 | PDU40 | 27.3 | 2780 | |
| 50 | PDU50 | 31.7 | 3230 | |
| 55 | PDU55 | 52.9 | 5390 | |
| 70 | PDU70 | 60.7 | 6190 | |
| 80 | PDU80 | 71.5 | 7290 | |
| 90 | PDU90 | 98.9 | 10100 | |
| 120 | PDU120 | 122.5 | 12400 | |
| NEW | 150 | PDU150 | 240 | 24500 |
| 180 | PDU180 | 347 | 35400 | |
| 240 | PDU240 | 525 | 53400 | |
Comparison of features with previous models
| Transmission torque | Installation time | Cost | Weight | Delivery | |
|---|---|---|---|---|---|
| Large Pin Gear Drive Units | Good | Good | Best | Good | Good |
| Large Gears | Good | Fair | Poor | Fair | Fair |
| Chain Type Pin Gears | Good | Fair | Good | Good | Good |
Complete line-up of stainless steel series (S Series)
Can be used in corrosive environments, such as in contact with water, acids, or alkalis. Can also be used from -20ºC to 400ºC.
New Advanced Rust Protection Series
Improved corrosion resistance thanks to a special surface treatment. Each part has been optimally treated for advanced rust protection in severe environments such as outdoors, around water, or in coastal areas.
- Applications: Vertical tower parking, large transport trolleys, casting lines, water gates, etc.
- Users can select the same size as they would with the standard series since the allowable tangential loads are the same.
- Made-to-order product.
Special specifications
Tsubaki also offers surface treatments, locking pin gears, small backlashes, and other special specifications.
Product renewal
From April 2012 all frame pins are hollow pin types (bush types). Further, the S Series (stainless steel) series construction is now the same as the standard series. Please contact a Tsubaki representative when the former series is required (such as for replacement).
Construction
Pin Gear Drive Units are drive units that come with pin gears and pin wheels (or pin racks) for engagement.
Structure
Pin gears feature special tooth profiles for smooth, continuous engagement with the rollers. Teeth have been hardened to increase their strength and wear resistance.
Unique pin gear tooth profile
The pin gear tooth profile is an approximation of an involute curve to provide smooth engagement and power transmission between pin wheel and rack. They also incorporate a unique Tsubaki design to give them even further strength.
Pin gear unit tooth profile
