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First Mate Series Thern Davit Crane

First Mate series
 

First Mate Series 5122 First Mate 500 lb crane

5122 Series Davit Crane

Lightweight, economical, easy to carry and easy to use, the First Mate 500 is perfect for a wide variety of simple jobs where adjustable height and reach are not required.

QUICK FACTS

  • Load ratings up to 500 lbs (226 kg)
  • Manual operation (electric, hydraulic or pneumatic available)
  • Rotates 360º
  • Quick-Disconnect Anchor
  • Available in 5 finishes
  • 2-Year Standard Warranty

 

Thern Portable Davit Cranes

Lift up to 1 ton with one of these durable portable davit cranes. Thern davit cranes make any operation simple and affordable with trouble-free setup and breakdown for easy transport between multiple service sites. We offer a wide variety of options and accessories to meet your specific requirements.

How to build the Portable David Crane to meet your needs ?

1. What capacity do I need (How much weight am I going to lift) ?
2. How do I want to lift that load (Hand winch or power winch) ?
3. What Finish is required (Is this for Marine or perhaps a Corrosive environment) ?
4. How do I want to mount this (Wall or Flush Mount)
5. How much wire rope do I need (How high am I lifting the material) ?

Each portable davit crane is designed for simple, affordable operation with the following features:

  • Choose from spur gear hand winch, work gear hand winch or power winch operation
  • Adjustable boom telescopes to 4 different lengths
  • Height can be adjusted while under load with ratchet style screw-jack
  • Crane rotates 360 on Nylatron bearing sleeve in the base
  • Crane breaks down for easy storage or transport
  • Available in your choice of two finishes: electrostatic powder coating or galvanized stainless steel.
  • Base options include: pedestal, socket or wall mount style or wheel base for floor crane operation.

5122 Manual

Portable & Stationary

Features

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. Features a built-in 3:1 design factor that stands up to abuse.
Adjustable Boom
Boom adjusts to two different angle positions.
Manual Winch Operation
Crane can be configured with a manual spur gear winch. Winches available in zinc plating or stainless steel finish.
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.
360º Rotation
Nylatron bearing allows smooth and easy 360° crane rotation under load
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. 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 or cable reel.
Variety of Bases (sold separately)
Pedestal, flush, wall mount and wheel bases allow for a variety of mounting solutions and are easily installed. Standard powder coat finish on pedestal, flush and wall mounts. Wheel base features enamel finish. Other finish options available including galvanized, stainless steel and epoxy finishes.
Two-Year Warranty
Industry-leading two-year limited warranty on all our products.

 


5122 Manual

Portable & Stationary
Davit Cranes

Thern 5122 "First Mate" Portable Davit Cranes

Hand or Power Winch Operation
Up to 500 lbs capacity

  • Hand Winch Operated Models include spur gear or worm gear hand winch with automatic disc brake for load control.
  • The Worm Gear Hand Winch model 4WM2-K can be power driven with a maximum 400 rpm drill-motor. Not available for Series 5122.
  • Power Winch Operated Models include 115 volt 1 phase AC electric winch with pendant control and brake. Other voltages and phases, 12 volt DC, pneumatic, and hydraulic available, contact factory. Series 5122 for hand operation only.
  • Quick Disconnect Anchor for quickly attaching or removing the wire rope from the winch drum.
  • Corrosion Resistant Finish with electrostatic powder coating and corrosion resistant fasteners. Galvanized finish also available, see models ending in GAL.
  • Adjustable Booms provide different height and reach combinations for various size loads. Series 5122 boom adjusts with pins to 2 different positions for operation, and folds down for storage or transport. Series 5110 and 5124 booms telescope to 4 different lengths, and adjust in height while under load with ratchet style screw-jack.
  • Crane Rotates 360° on a pin and sleeve bearing in the base.
  • Stainless Steel models for long service life in corrosive environments, with zinc and iridescent dichromate plated hand winch or stainless steel hand winch.
  • Bases sold separately in pedestal, socket, or wall mount style.
  • Wheel Base sold separately for floor crane operation. Base includes rear caster wheels for 360° maneuverability.
  • Wire Rope Assemblies sold separately.
  • 2-year Limited Warranty
  •  

Thern products are not for lifting people, or things over people.

DIMART-Lift-Below-REF-5PA10

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.

Ensign 500 Lift Below Floor Level2

Lift Below Floor Level1

Wire Rope Diameter

Wire Rope Length3

Winch Configurations

Min Pos B4

Max Pos B1

   

M1

M2

M3

E2

E4

(ft)

(m)

(ft)

(m)

(in)

(mm)

(ft)

(m)

         

0

0

5

1.5

3/16

5

20

6.0

•

—

•

—

•

8

2.4

13

3.9

3/16

5

28

8.5

•

—

•

—

•

16

4.8

21

6.4

3/16

5

36

10.9

•

—

•

—

•

25

7.6

30

9.1

3/16

5

45

13.7

•

—

•

—

•

40

12.1

45

13.7

3/16

5

60

18.2

—

—

•

—

•

55

16.7

60

18.3

3/16

5

75

22.8

—

—

•

—

•

70

21.3

75

22.8

3/16

5

90

27.4

—

—

—

—

•

 

 For long lifts up to 240 feet (73.1 m), please contact the factory.

0

0

5

1.5

1/4

6

20

6.0

—

•

•

•

•

8

2.4

13

3.9

1/4

6

28

8.5

—

•

•

•

•

16

4.8

21

6.4

1/4

6

36

10.9

—

•

•

•

•

25

7.6

30

9.1

1/4

6

45

13.7

—

•

•

•

•

40

12.1

45

13.7

1/4

6

60

18.2

—

—

—

—

•

1 Lift below floor level varies depending on boom position and base configuration.
For longer lifts, please contact Southern Tool

2 Performance Characteristics are for standard products referred to in the owner’s manual. Non-standard products may vary from the original design. Contact Thern, Inc. for this information.

3 Wire rope assemblies include a hood and swaged ball fitting to work with quick-disconnect anchor on winches, cable spooler and wire rope keeper. 316SS wire rope is also available. Please contact the factory.

 

 

 

Pedestal Mount Performance Ratings2

Boom Position

Load Rating

Hook Reach

Hook Height

(lb)

(kg)

(in)

(mm)

(in)

(mm)

A-1

500

226

17

431

74

1879

A-2

400

181

22

558

79

2006

A-3

300

136

28

711

87

2209

A-4

250

113

36

914

96

2438

B-1

500

226

14

355

76

1930

B-2

400

181

17

431

83

2108

B-3

300

136

22

558

91

2311

B-4

250

113

28

711

101

2565

 

1 Lift below floor level varies depending on boom position and base configuration. For longer lifts, please contact factory.

2 Performance Characteristics are for standard products. Non-standard products may vary from the original design. Contact Thern, Inc. for this information.

 
Flush/Wall Mount Performance Ratings2

Boom Position

Load Rating

Hook Reach

Hook Height

(lb)

(kg)

(in)

(mm)

(in)

(mm)

A-1

500

226

17

431

60

1524

A-2

400

181

22

558

65

1651

A-3

300

136

28

711

73

1854

A-4

250

113

36

914

82

2082

B-1

500

226

14

355

62

1574

B-2

400

181

17

431

69

1752

B-3

300

136

22

558

77

1955

B-4

250

113

28

711

87

2209

 

1 Lift below floor level varies depending on boom position and base configuration.
For longer lifts, please contact Southern Tool.
2 Performance Characteristics are for standard products. Non-standard products may vary from the original design. Contact Thern, Inc. for this information.

 

How to build the Portable David Crane to meet your needs ?

1. What capacity do I need (How much weight am I going to lift) ?
2. How do I want to lift that load (Hand winch or power winch) ?
3. What Finish is required (Is this for Marine or perhaps a Corrosive environment) ?
4. How do I want to mount this (Wall or Flush Mount)
5. How much wire rope do I need (How high am I lifting the material) ?

5122 FIRST MATE Series - Popular Configurations
5122M1 up to 500 lb capacity davit crane with M4022PB-K spur gear hand winch
Crane powder coat
5122M1GAL up to 500 lb capacity davit crane with M4022PB-K spur gear hand winch
Crane galvanized
5122M3SS up to 500 lb capacity davit crane with M4042PBSS-K spur gear hand winch
Crane stainless steel

 

Crane Components
5122 up to 500 lb portable davit base model   powder coated no winch
M1 M4022PB-K spur gear hand winch only zinc plated
M3 M4042PBSS-K spur gear hand winch only stainless steel
GAL galvanized finish on crane only 
SS 304 stainless steel construction on crane only
522 pedestal/socket base powder coat finish upright or flush mount
522GAL pedestal/socket base galvanized finish  upright or flush mount
522SS pedestal/socket base stainless steel upright or flush mount
522W wall mount base powder coat finish
522WGAL wall mount base galvanized finish
522SSW wall mount base stainless steel
514 wheel base enamel finish
TK2P base cover for 5122 bases plastic
RK19-25S wire rope keeper stainless 304SS
RW50 cable spool stainless steel 316SS

Winch (Except on the popular configuration models) Pedestal Base and Wire Rope Sold SEPARATELY 

Crane Dimensions with Pedestal Base

1stMate-Dims-Pedestal
 
Crane Dimensions with Flush or Wall-Mount Base
1stMate-Dims-Flush-Wall

 

Wire Rope Assemblies for the THERN 5122 Davit Crane
WA19-20NS 3/16 in x 20 ft  galvanized aircraft cable with swivel hook and swaged ball fitting
WA19-28NS 3/16 in x 28 ft  galvanized aircraft cable with swivel hook and swaged ball fitting
WA19-36NS 3/16 in x 36 ft galvanized aircraft cable with swivel hook and swaged ball fitting
WA19-45NS 3/16 in x 45 ft  galvanized aircraft cable with swivel hook and swaged ball fitting
WS19-20NO 3/16 in x 20 ft  304 stainless steel wire rope with SS oval hook and swaged ball fitting
WS19-28NO 3/16 in x 28 ft  304 stainless steel wire rope with SS oval hook and swaged ball fitting
WS19-36NO 3/16 in x 36 ft  304 stainless steel wire rope with SS oval hook and swaged ball fitting
WS19-45NO 3/16 in x 45 ft 304 stainless steel wire rope with SS oval hook and swaged ball fitting
WS19-60NO 3/16 in x 60 ft 304 stainless steel wire rope with SS oval hook and swaged ball fitting
WS19-75NO 3/16 in x 75 ft 304 stainless steel wire rope with SS oval hook and swaged ball fitting
5122M1
UP TO 500 LB CAPACITY DAVIT CRANE WITH M4022PB-K SPUR GEAR HAND WINCH - CRANE POWDER COAT - WGT = 82 LBS
Mfg. item #: 5122M1
THE5122M1
Call for freight quote on this item or we will confirm freight charges before shipping.1
$636.13

117
5122M1GAL
UP TO 500 LB CAPACITY DAVIT CRANE WITH M4022PB-K SPUR GEAR HAND WINCH - CRANE GALVANIZED - WGT = 82 LBS
Mfg. item #: 5122M1GAL
THE5122M1GAL
Call for freight quote on this item or we will confirm freight charges before shipping.1
$701.75

117
5122M3SS
UP TO 500 LB CAPACITY DAVIT CRANE WITH M4042PBSS-K SPUR GEAR HAND WINCH - CRANE STAINLESS STEEL - WGT = 89 LBS
Mfg. item #: 5122M3SS
THE5122M3SS
Call for freight quote on this item or we will confirm freight charges before shipping.1
$1,540.00

117
5122
UP TO 500 LB _ PORTABLE DAVIT _ BASE MODEL _ POWDER COATED _ NO WINCH - WGT = 54 LBS
Mfg. item #: 5122
THE5122
"Ships by UPS, see freight calculator at checkout."2
$323.75

117
M1
M4523B-K _ SPUR GEAR HAND WINCH ONLY _ ENAMEL FINISH - WGT = 78 LBS
Mfg. item #: M1
THEM1
"Ships by UPS, see freight calculator at checkout."2
$1,356.25

117
M3
M4312PBSS-K _ SPUR GEAR HAND WINCH ONLY _ STAINLESS STEEL - WGT = 28 LBS
Mfg. item #: M3
THEM3
"Ships by UPS, see freight calculator at checkout."2
$1,111.25

117
GAL
GALVANIZED FINISH _ ON CRANE ONLY
Mfg. item #: GAL
THEGAL
FREE shipping when ordered with a machine from this manufacturer.20
$445.00

117
SS
304 STAINLESS STEEL CONSTRUCTION _ ON CRANE ONLY
Mfg. item #: SS
THESS
FREE shipping when ordered with a machine from this manufacturer.20
$760.48

117
522
PEDESTAL/SOCKET BASE _ POWDER COAT FINISH _ UPRIGHT OR FLUSH MOUNT - WGT = 18 LBS
Mfg. item #: 522
THE522
"Ships by UPS, see freight calculator at checkout."2
$139.97

117
522GAL
PEDESTAL/SOCKET BASE _ GALVANIZED FINISH _ UPRIGHT OR FLUSH MOUNT - WGT = 18 LBS
Mfg. item #: 522GAL
THE522GAL
"Ships by UPS, see freight calculator at checkout."2
$167.96

117
522SS
PEDESTAL/SOCKET BASE _ STAINLESS STEEL _ UPRIGHT OR FLUSH MOUNT - WGT = 18 LBS
Mfg. item #: 522SS
THE522SS
"Ships by UPS, see freight calculator at checkout."2
$258.13

117
522W
WALL MOUNT BASE _ POWDER COAT FINISH - WGT = 21 LBS
Mfg. item #: 522W
THE522W
"Ships by UPS, see freight calculator at checkout."2
$247.27

117
522WGAL
WALL MOUNT BASE _ GALVANIZED FINISH - WGT = 21 LBS
Mfg. item #: 522WGAL
THE522WGAL
"Ships by UPS, see freight calculator at checkout."2
$280.00

117
522SSW
WALL MOUNT BASE _ STAINLESS STEEL - WGT = 21 LBS
Mfg. item #: 522SSW
THE522SSW
"Ships by UPS, see freight calculator at checkout."2
$463.75

117
514
WHEEL BASE _ ENAMEL FINISH - WGT = 80 LBS
Mfg. item #: 514
THE514
Call for freight quote on this item or we will confirm freight charges before shipping.1
$581.88

117
TK2P
BASE COVER FOR 5122 BASES _ PLASTIC
Mfg. item #: TK2P
THETK2P
"Ships by UPS, see freight calculator at checkout."2
$16.00

117
RK19-25S
WIRE ROPE KEEPER _ STAINLESS 304SS
Mfg. item #: RK19-25S
THERK19-25S
"Ships by UPS, see freight calculator at checkout."2
$17.01

117
RW50
CABLE SPOOL _ STAINLESS STEEL 316SS - WGT = 12 LBS
Mfg. item #: RW50
THERW50
"Ships by UPS, see freight calculator at checkout."2
$266.88

117
WA19-20NS
3/16 IN X 20 FT _ GALVANIZED AIRCRAFT CABLE WITH SWIVEL HOOK AND SWAGED BALL FITTING - WGT = 3 LBS
Mfg. item #: WA19-20NS
THEWA19-20NS
"Ships by UPS, see freight calculator at checkout."2
$86.03

117
WA19-28NS
3/16 IN X 28 FT _ GALVANIZED AIRCRAFT CABLE WITH SWIVEL HOOK AND SWAGED BALL FITTING - WGT = 4 LBS
Mfg. item #: WA19-28NS
THEWA19-28NS
"Ships by UPS, see freight calculator at checkout."2
$94.03

117
WA19-36NS
3/16 IN X 36 FT _ GALVANIZED AIRCRAFT CABLE WITH SWIVEL HOOK AND SWAGED BALL FITTING - WGT = 4 LBS
Mfg. item #: WA19-36NS
THEWA19-36NS
"Ships by UPS, see freight calculator at checkout."2
$97.03

117
WA19-45NS
3/16 IN X 45 FT _ GALVANIZED AIRCRAFT CABLE WITH SWIVEL HOOK AND SWAGED BALL FITTING - WGT = 7 LBS
Mfg. item #: WA19-45NS
THEWA19-45NS
"Ships by UPS, see freight calculator at checkout."2
$116.03

117
WS19-20NO
3/16 IN X 20 FT _ 304 STAINLESS STEEL WIRE ROPE WITH SS OVAL HOOK AND SWAGED BALL FITTING - WGT = 3 LBS
Mfg. item #: WS19-20NO
THEWS19-20NO
"Ships by UPS, see freight calculator at checkout."2
$146.50

117
WS19-28NO
3/16 IN X 28 FT _ 304 STAINLESS STEEL WIRE ROPE WITH SS OVAL HOOK AND SWAGED BALL FITTING - WGT = 3 LBS
Mfg. item #: WS19-28NO
THEWS19-28NO
"Ships by UPS, see freight calculator at checkout."2
$154.89

117
WS19-36NO
3/16 IN X 36 FT _ 304 STAINLESS STEEL WIRE ROPE WITH SS OVAL HOOK AND SWAGED BALL FITTING - WGT = 4 LBS
Mfg. item #: WS19-36NO
THEWS19-36NO
"Ships by UPS, see freight calculator at checkout."2
$164.23

117
WS19-45NO
3/16 IN X 45 FT _ 304 STAINLESS STEEL WIRE ROPE WITH SS OVAL HOOK AND SWAGED BALL FITTING - WGT = 7 LBS
Mfg. item #: WS19-45NO
THEWS19-45NO
"Ships by UPS, see freight calculator at checkout."2
$178.22

117
WS19-60NO
3/16 IN X 60 FT _ 304 STAINLESS STEEL WIRE ROPE WITH SS OVAL HOOK AND SWAGED BALL FITTING - WGT = 9 LBS
Mfg. item #: WS19-60NO
THEWS19-60NO
"Ships by UPS, see freight calculator at checkout."2
$196.88

117
WS19-75NO
3/16 IN X 75 FT _ 304 STAINLESS STEEL WIRE ROPE WITH SS OVAL HOOK AND SWAGED BALL FITTING - WGT = 11 LBS
Mfg. item #: WS19-75NO
THEWS19-75NO
"Ships by UPS, see freight calculator at checkout."2
$226.74

117
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0.017 150508 14:56