Pin Gear Drive Unit – Video

Features and Structure of Pin Gear Drive Unit

1. 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	PDU020	4.7	480
	22	PDU022	7.7	780
	30	PDU030	12.8	1300
	35	PDU035	19.5	1990
	40	PDU040	27.3	2780
	50	PDU050	31.7	3230
	55	PDU055	52.9	5390
	70	PDU070	60.7	6190
	80	PDU080	71.5	7290
	90	PDU090	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.

Flexible Type

Pin Gear Drive Unit Flexible Type with wider center-to-center distance tolerance than before and wider gap between pin rack/pin wheel and pin gear has been lined up. It is effective not only for devices with strict mounting accuracy but also when the installation position changes during operation due to thermal expansion, etc.

• Applications: Kiln dryer, earth-moving machine.
• Allowable tangential load is lower than standard series. Refer to the leaflet for selection.
• Made-to-order product.

Special specifications

Tsubaki also offers surface treatments, locking pin gears, small backlashes, and other special specifications.

More Detals

2. 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).

3. Construction

Pin Gear Drive Units are drive units that come with pin gears and pin wheels (or pin racks) for engagement.

Rotating Drives	Linear Drives
Pin wheel diameter (no. of pins) can be freely selected.	Pin rack length (no. of pins) can be freely selected.

4. 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.

5. 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

6. Standard specifications and backlash

Click the link below for more information on standard specifications and backlash (reference values)

Standard specifications and backlash

7. Dimensions, specifications, and model numbers

Click the link below for more information on part dimensions, specifications, and model numbers.

• Pin Wheel / Pin Gear
• Pin Rack / Pin Gear