Series 21 Ballast Tamper Attachment for Excavators, Backhoes, and Grapple Trucks

Efficient Tamping in Tight-Access Track Areas

The Series 21 Ballast Tamper Attachment from DymaxRail is built for track work in tight areas where larger tamping machines won’t fit. It pairs with excavators, backhoes, and grapple trucks to tackle turnout and crossover tamping with speed and precision. A 21-inch tine spread and optional 270° rotation give operators full control to work efficiently in congested rail environments.

BROCHURE GET A QUOTE

PRODUCT HIGHLIGHTS

Machine Compatibility: Excavators, backhoe loaders, grapple trucks, rail cranes
Tine Spread: 21 inches – wider footprint for stable tamping
Vibrator Group: High-frequency design for fast, consistent tamping.
Motor: Single vibrator motor.
Hydraulics: Twin cylinders with flow control for smooth tamping.
Rotation Options: 270° electro-hydraulic rotation or no rotation for fitting tiltrotator couplers.

APPLICATIONS

Designed for precision work in tight spaces and high-traffic rail environments.

Turnout and crossover tamping
Spot tamping along mainline and siding track
Yard track maintenance
Tamping support for crane and MOW operations
Tight-access tamping near structures and switches
Tie replacement and surfacing projects

21-inch tine spread: Provides a wider footprint for stable tamping and can be adjusted by removing tines for left/right-side use.
Lightweight, compact design: Ideal for 5T excavators and tight-access job sites, including crane rail applications.
Powerful Dymax Rail vibrator group: Delivers high-frequency vibration with fewer motor issues.
Twin-cylinder design: Applies direct force to the tine holder for efficient ballast compaction.
Heavy-duty rubber isolators: Reduce vibration transfer and extend service life of both tool and carrier.
Bolt-on steel tines with carbide wear pads: Easy to replace for long service life.
Rotation options: Optional 270° rotation system or can be made to fit tiltrotators couplers, railroad cranes, and grapple trucks.
Electro-hydraulic valve kit: Smooth, precise operation for rotation-equipped models.
Transport stand with tie-down points: Simplifies handling and storage.

OPTIONS

Longer tamping tines suited to rail crane applications

Not the right fit for your operation? Find the tamper that is. View all DymaxRail Ballast Tamper models →

MODELS WITH 270° ROTATION

Model Code
Description
Weight (lbs)

DX-BT-DYM21-270×1-GT-10

Ballast Tamper-DymaxRail Series 21-270 degree rotation x 1 motor-Grapple Truck-Class 10

STANDARD FEATURES:

– 21 inch tine spacing

– 270 degree rotation system

– Bolt-on AR400 1.50in tines with AR500 pads

– DymaxRail heavy duty vibrator group

– Twin cylinder; outside mount design with integrated stop and flow control valves

– Machine adapter with pins

– Integrated flow control for motor circuit

– 12v/24v Electro hydraulic valve mounted on workhead provided with cable kit

– Transport stand with tie downs included

WEIGHT: 1900 lbs

DX-BT-DYM21-270×1-BL-10

Ballast Tamper-DymaxRail Series 21-270 degree rotation x 1 motor-Backhoe Loader-Class 10

STANDARD FEATURES:

– 21 inch tine spacing

– 270 degree rotation system

– Bolt-on AR400 1.50 inch tines with AR500 pads

– DymaxRail heavy duty vibrator group

– Twin cylinder; outside mount design with integrated stop and flow control valves

– Machine adapter with pins

– Integrated flow control for motor circuit

– 12v/24v Electro hydraulic valve mounted on workhead provided with cable kit

– Transport stand with tie downs included

WEIGHT: 1900 lbs

DX-BT-DYM21-270×1-BL-20

Ballast Tamper-DymaxRail Series 21-270 degree rotation x 1 motor-Backhoe Loader-Class 20

STANDARD FEATURES:

– 21 inch tine spacing

– 270 degree rotation system

– Bolt-on AR400 1.50in tines with AR500 pads

– DymaxRail heavy duty vibrator group

– Twin cylinder; outside mount design with integrated stop and flow control valves

– Bolt 202 machine adapter with pins

– Integrated flow control for motor circuit

– 12v/24v Electro hydraulic valve mounted on workhead provided with cable kit

– Transport stand with tie downs included

WEIGHT: 1900 lbs

DX-BT-DYM21-270×1-HX-5T

Ballast Tamper-DymaxRail Series 21-270 degree rotation x 1 motor-Hydraulic Excavator-5 Ton

STANDARD FEATURES:

– 21 inch tine spacing

– 270 degree rotation system

– Bolt-on AR400 1.50in tines with AR500 pads

– DymaxRail heavy duty vibrator group

– Twin cylinder; outside mount design with integrated stop and flow control valves

– Bolt 202 machine adapter with pins

– Integrated flow control for motor circuit

– 12v/24v Electro hydraulic valve mounted on workhead provided with cable kit

– Transport stand with tie downs included

WEIGHT: 1900 lbs

DX-BT-DYM21-270×1-HX-8T Ballast Tamper-DymaxRail Series 21-270 degree rotation x 1 motor-Hydraulic Excavator-8 Ton

STANDARD FEATURES:

– 21 inch tine spacing

– 270 degree rotation system

– Bolt-on AR400 1.50in tines with AR500 pads

– DymaxRail heavy duty vibrator group

– Twin cylinder; outside mount design with integrated stop and flow control valves

– Bolt 202 machine adapter with pins

– Integrated flow control for motor circuit

– 12v/24v Electro hydraulic valve mounted on workhead provided with cable kit

– Transport stand with tie downs included

WEIGHT: 1900 lbs

Design and specifications are subject to change without notice.

MODELS WITHOUT ROTATION (FITS TILTROTATOR COUPLERS)

Model Code
Description
Weight (lbs)

DX-BT-DYM21-TRQx1-BL-10

Ballast Tamper-DymaxRail Series 21-Tilt Rotator Coupler x 1 motor-Backhoe Loader-Class 10

STANDARD FEATURES:

– 21 inch tine spacing

– Bolt-on AR400 1.5in tines with AR500 pads

– DymaxRail heavy duty vibrator group

– Twin cylinder; outside mount design with integrated stop

– Integrated flow control on motor circuit

– Bolt 202 machine adapter with pins

– Transport stand with tie downs included

WEIGHT: Tamper: 1350 lbs / Stand: 300 lbs / Total Weight: 1650 lbs

DX-BT-DYM21-TRQx1-BL-20

Ballast Tamper-DymaxRail Series 21-Tilt Rotator Coupler x 1 motor-Backhoe Loader-Class 20

STANDARD FEATURES:

– 21 inch tine spacing

– Bolt-on AR400 1.5in tines with AR500 pads

– DymaxRail heavy duty vibrator group

– Twin cylinder; outside mount design with integrated stop

– Integrated flow control

– Bolt 202 machine adapter with pins

– Transport stand with tie downs included

WEIGHT: Tamper: 1350 lbs / Stand: 300 lbs / Total Weight: 1650 lbs

DX-BT-DYM21-TRQx1-HX-5T

Ballast Tamper-DymaxRail Series 21-Tilt Rotator Coupler x 1 motor-Hydraulic Excavator-5 Ton

STANDARD FEATURES:

– 21 inch tine spacing

– Bolt-on AR400 1.5in tines with AR500 pads

– DymaxRail heavy duty vibrator group

– Twin cylinder; outside mount design with integrated stop

– Integrated flow control on motor circuit

– Bolt 202 machine adapter with pins

– Transport stand with tie downs included

WEIGHT: Tamper: 1350 lbs / Stand: 300 lbs / Total Weight: 1650 lbs

DX-BT-DYM21-TRQx1-HX-8T

Ballast Tamper-DymaxRail Series 21-Tilt Rotator Coupler x 1 motor-Hydraulic Excavator-8 Ton

STANDARD FEATURES:

– 21 inch tine spacing

– Bolt-on AR400 1.5in tines with AR500 pads

– DymaxRail heavy duty vibrator group

– Twin cylinder; outside mount design with integrated stop

– Integrated flow control on motor circuit

– Bolt 202 machine adapter with pins

– Transport stand with tie downs included

WEIGHT: Tamper: 1350 lbs / Stand: 300 lbs / Total Weight: 1650 lbs

DX-BT-DYM21-TRQx1-HX-12T

Ballast Tamper-DymaxRail Series 21-Tilt Rotator Coupler x 1 motor-Hydraulic Excavator-12 Ton

STANDARD FEATURES:

– 21 inch tine spacing

– Bolt-on AR400 1.5in tines with AR500 pads

– DymaxRail heavy duty vibrator group

– Twin cylinder; outside mount design with integrated stop

– Integrated flow control

– Bolt 202 machine adapter with pins

– Transport stand with tie downs included

WEIGHT: Tamper: 1550 lbs / Stand: 300 lbs / Total Weight: 1850 lbs

DX-BT-DYM21-TRQx1-HX-16T

Ballast Tamper-DymaxRail Series 21-Tilt Rotator Coupler x 1 motor-Hydraulic Excavator-16 Ton

STANDARD FEATURES:

– 21 inch tine spacing

– Bolt-on AR400 1.5in tines with AR500 pads

– DymaxRail heavy duty vibrator group

– Twin cylinder; outside mount design with integrated stop

– Integrated flow control on motor circuit

– Bolt 202 machine adapter with pins

– Transport stand with tie downs included

WEIGHT: Tamper: 1350 lbs / Stand: 300 lbs / Total Weight: 1950 lbs

Design and specifications are subject to change without notice.

HYDRAULIC REQUIREMENTS

MODELS: DX-BT-DYM21-270×1-GT-10 | DX-BT-DYM21-270×1-BL-10 | DX-BT-DYM21-270×1-BL-20 | DX-BT-DYM21-270×1-HX-5T | DX-BT-DYM21-270×1-HX-8T

HYDRAULIC REQUIREMENTS:

Your machine will require the following (2x) circuits to operate the attachment. It also requires a drain line for the motor circuit. This attachment is provided with an electro-hydraulic valve to power the rotation circuit. Installation of the cabling kit is required prior to use. If your machine does not have the correct number of hydraulic circuits or controls please contact your sales representative to discuss alternative solutions for setup of the attachment.

CIRCUIT 1 – VIBRATE MOTOR
Type: Uni-directional one-way + case drain line required.
Case drain line size min -08 size (1/2in hose)
Flow GPM/PSI (min/max): 18-21 / 3,000

CIRCUIT2 – TINE SQUEEZE ARMS
Type: Bi-directional circuit for open close function
Flow GPM/PSI (min/max): 10-15 / 3,000

CIRCUIT 3 – ROTATION
Type: Electro-hydraulic 12v/24v
Requires installation of wire cable kit provided for operating solenoid on diverter valve. Valve mounted on tamper workhead.

NOT SUPPLIED: Jumper hose lines from attachment bulkhead to machine lines with disconnects.

HYDRAULIC REQUIREMENTS:

Your machine will require the following (2x) circuits to operate the attachment. It also requires a drain line for the motor circuit.

CIRCUIT 1 – MOTOR
Type: Uni-directional one-way + case drain line required.
Case drain line size min -08 size (1/2in hose)
Flow GPM/PSI (min/max): 18-21 / 3,000

CIRCUIT 2 – TINE SQUEEZE
Type: Bi-directional circuit for open close function
Flow GPM/PSI (min/max): 10-15 / 3,000

NOT SUPPLIED: Jumper hoses from the attachment to the machine lines.

Previous Next

1 2 3 4 5 6

Series 21 Ballast Tamper Attachment for Excavators, Backhoes, and Grapple Trucks

Efficient Tamping in Tight-Access Track Areas

PRODUCT HIGHLIGHTS

APPLICATIONS

OPTIONS

MODELS WITH 270° ROTATION

MODELS WITHOUT ROTATION (FITS TILTROTATOR COUPLERS)

HYDRAULIC REQUIREMENTS

ADDRESS

Contact

OPERATION HOURS