Welded Steel Construction
Crane boom, mast and base fabricated from heavy-duty welded constructed structural steel pipe and tubing that limits deflection and meets ASTM standards.

Adjustable Boom
Boom extends to four positions with quick-release pin and adjusts angle with ratchet

Manual or Power Operation
Thern davit cranes can be configured with a spur or worm gear manual winch or power winch. Choose from Thern’s spur or worm gear hand winches or power winch with 115/1/60 as standard. Other voltages available as well as pneumatic, hydraulic or DC Volt power operation.

Corrosion Resistant Finish
Electrostatic powder coated crane and stainless steel fasteners combine to resist corrosion in harsh environments. Other options available include: galvanized, stainless steel and epoxy finishes.

Easy Assembly/Disassembly
Quick-release clevis style stainless steel pins allow for easy assembly and quick disassembly for transport or storage. No tools required.

Quick Disconnect Anchor
For quickly attaching or removing wire rope equipped with a swaged ball fitting. This allows the operator to leave the wire rope attached to the load at all times and simply remove the rope from the winch and attach to the optional wire rope keeper, cable reel.

Sheave Clevis Pin
The sheave clevis pin is D-Shaped to prevent the clevis pin from rotating when under light loads

 
Quick-Mount Winch Bracket
A variety of Thern winches can be attached to the bracket. After a winch is attached, the bracket is easily mounted (without tools) to the crane via quick-connect pins.

Mast Cap
A cap on top of the mast helps keep weather and debris out of the mas

Rotation Handle
The new rotation handle position does not interfere with the operation of the boom angle adjustment screw jack

360º Rotation
Tapered roller bearing allows smooth and easy 360° crane rotation under load.

Variety of Bases (sold separately)
Pedestal, flush and wall mount bases allow for a variety of mounting solutions and are easily installed. Heavy-duty base cap included with lanyard keeps water and debris out of base when crane is removed. Standard powder coat finish on pedestal, flush and wall mounts. Other finish options available including galvanized, stainless steel and epoxy finishes.

Two-Year Warranty
Industry-leading two-year limited warranty on all our products

NOTE: Performance ratings and lift below floor level distances vary depending upon boom position, base configuration, winch and wire rope assembly. The information found here covers the majority of those variables which are necessary to make an informed selection of the appropriate crane configuration for the intended application. For more information or assistance, please contact one of our experts at Beaver Engineering.

IMPORTANT: It is the owner’s or operator’s responsibility to determine the suitability of the equipment to its intended use. Study all applicable codes, manuals and regulations. Be sure to read the Owner’s Manual supplied with the equipment before operating it.

Commander 2000 5PT20 Load Ratings*

Commander 2000 Performance Characteristics with M1 and M3 Winches and Galvanized Aircraft Cable

¹ Lift below floor level varies depending on boom position and base configuration. For long lifts up to 435 ft (132 m), please contact Beaver Engineering.
² Load ratings are for standard products only. Contact Beaver Engineering for non-standard products.

Commander 2000 Performance Characteristics with M2 and E2 Winches and Galvanized Aircraft Cable

¹ Lift below floor level varies depending on boom position and base configuration. For long lifts up to 435 ft (132 m), please contact Beaver Engineering.
² Load ratings are for standard products only. Contact Beaver Engineering for non-standard products.

Commander 2000 Performance Characteristics with E4 Winch and Galvanized Aircraft Cable

¹ Lift below floor level varies depending on boom position and base configuration. For long lifts up to 435 ft (129 m), please contact Beaver Engineering.
² Load ratings are for standard products only. Contact Beaver Engineering for non-standard products.

Commander 2000 Performance Characteristics with M1 and M3 Winches and 304SS Wire Rope

¹ Lift below floor level varies depending on boom position and base configuration. For long lifts up to 435 ft (132 m), please contact Beaver Engineering.
² Load ratings are for standard products only. Contact Beaver Engineering for non-standard products.

Commander 2000 Performance Characteristics with M2 and E2 Winches and 304SS Wire Rope

¹ Lift below floor level varies depending on boom position and base configuration. For long lifts up to 435 ft (132 m), please contact Beaver Engineering.
² Load ratings are for standard products only. Contact Beaver Engineering for non-standard products.

Commander 2000 Performance Characteristics with E4 Winch and 304SS Wire Rope

Base Installation Hardware
Torque controlled expansion anchor bolt kits.

Carbon Steel Anchor Kit
AN62A-6 – Carbon steel anchor body, nut and washer with type 316 stainless steel expansion sleeve. Size: 5/8 inch x 6 inch.

304 Stainless Steel Anchor Kit
AN62A-6S – Type 304 stainless steel anchor body, nut and washer with type 316 stainless steel expansion sleeve. Size: 5/8 inch x 6 inch.Approx. ship weight: 2.3 lb (1.0 kg).

AN62A-6S316 Stainless Steel Anchor Kit Type 316 stainless steel anchor body, nut, washer and expansion sleeve. Size: 5/8 inch x 6 inch.

Headache Ball
Keeps cable taut when no load is attached. Attach to cable.

• HB10-12-25 – Red Enamel Steel, 1/8 to 1/4 inch wire rope.

• HB10-25-38 – Red Enamel Steel, 1/4 to 3/8 inch wire rope.

• HB10S-12-25 – 304 Stainless Steel, 1/8 to 1/4 inch wire rope.

• HB10S-25-38 – 304 Stainless Steel, 1/4 to 3/8 inch wire rope.

Approx. ship weight: 10 lb (4.5 kg).

Rotational Bearing
• Roller/Ball Bearing — Optional on the Commander Series davits, the specially designed • roller/ball bearing allows smooth and easy 360° crane rotation under load.

• Stainless Steel Lock — Stainless steel lock assembly holds crane in desired position during operation and when not in use. Locking positions at 30° increments. Included only with roller/ball bearing.

5PT20BRG – 11 lb (5.0 kg)   5PT20BRG-S – 11 lb (5.0 kg)

Base Extension
Base extension is ideal for use with the flush or wall mount base options to maintain crane height for obstacle clearance or when additional 15″ height is required.

• 5BE10-15

• 5BE10-15G

• 5BE10-15S

Approx. ship weight: 33 lb (15 kg)

Cable Spooler
RW50 – Keeps wire rope neat and safe when not in use. 316 stainless steel reel winds up wire rope when detached from crane. Suitable for wire ropes up to 5/16 diameter, wire rope capacity will vary. Not designed to hold a load. Approx. ship weight: 12 lb (5.5 kg).

Wire Rope Capacities
• 3/16 inch wire rope, 140 ft
• 1/4 inch wire rope, 75 ft
• 5/16 inch wire rope, 50 ft

Wire Rope Keeper
Stainless steel metal bracket attaches to base or other structure to hold free end of the wire rope when detached from crane. Not designed to hold a load.

RK19-25S – 304 stainless steel – 1 lb (0.45 kg)
RK19-25S316 – 316 stainless steel – 1 lb (0.45 kg)

Drill-Drive Kit
ED300-DW11 – 120 VAC, 11.5 amp, 300rpm drill-motor to power drive the worm gear hand winch (4WM2-K). Includes the 1-1/8 inch hex drive socket and adapter. Approx. ship weight: 12 lb (5.5 kg).

OPTIONS

Factory Load Test
Upon request, Thern can test your crane prior to shipping, up to 125% of rated load. Contact factory for pricing and availability prior to order.

Extended 5-Year Warranty
Extend our standard 2-year warranty to 5 years. Contact factory for pricing and availability prior to order.

PE Stamp – Professional Engineer Stamp
Available upon request at time of order. Contact factory for pricing and availability prior to order.

ATEX Certifications

• ATEX certifications available. Contact factory for pricing and availability prior to order.
• Explosion Proof Classification, special configurations for use in explosive settings available.

Contact factory for pricing and availability prior to order.

Explosion Proof Classification
Special configurations for use in explosive settings available. Contact factory for pricing and availability prior to order.

Power Winch Operation
AC electric in any voltage. DC electric, hydraulic and pneumatic power winches available

Custom Electric Controls
Thern can build the high quality controls you need to operate your equipment.

Limit Switch
Add an emergency safety shut-off to ensure safe operation.

 
Customization
Customization is available for almost all Thern products and should always be performed by our engineers to assure the changes meet our stringent quality standards. Below are some of our more common customization requests. Only factory modifications are covered under warranty.

Longer Lift Distances
Customized winch and crane configurations to accommodate longer lifts.

Custom Colors & Finishes
Custom colors and finishes are available to match your unique application.

Extended Boom and Masts
Thern can extend mast heights and boom lengths to fit your needs.

Relocate the Winch
The winch can be relocated to fit confined spaces or height restrictions.

Special Bases
Custom bases or mounting requirements can be manufactured to meet your unique situation.

Crane Dimensions with Pedestal Base

Crane Dimensions with Flush or Wall-Mount Base

Crane Dimensions with Wheel Base