Main Springs

Dock leveler main springs are the source of power for mechanical dock leveler to raise. They commonly connect to a pull bar that pulls on a lifting arm that cause the dock leveler deck to rise. Lifting springs come in all lengths, sizes, diameters, and wire sizes. Main springs are offered for Rite-Hite, Kelley, Atlantic, Serco, McGuire, Poweramp, Blue Giant, and other dock levler brands. Please complete a survey if you are not sure of the spring you need!

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  • 52100 Extension Spring 23-1/2"Lg 3"Od, 41 Coils .435 Wire - Rite-Hite
    52100 Extension Spring 23-1/2"Lg 3"Od, 41 Coils .435 Wire
    SKU: 52100
    Fits: Rite-Hite
    $133.60
    $133.60
  • 333-054 Serco Wl Main Spring Oal 25" Wire .634 Od 4" Coils 30 - Serco
    333-054 Serco Wl Main Spring Oal 25" Wire .634 Od 4" Coils 30
    SKU: 333-054
    Fits: Serco
    $323.10
    $323.10
  • 586-3009 Spring Adjusting Loop - Serco
    586-3009 Spring Adjusting Loop
    SKU: 586-3009
    Fits: Serco
    $55.90
    $55.90
  • 302-0390 Pentalift Main Spring 21-1/2"X 3-3/8"Od 38 Coils - Pentalift
    302-0390 Pentalift Main Spring 21-1/2"X 3-3/8"Od 38 Coils
    SKU: 302-0390
    Fits: Pentalift
    $164.07
    $164.07
  • OTH-2555 Snubber Spring (DOTH-2555) - DLM
    OTH-2555 Snubber Spring (DOTH-2555)
    SKU: DOTH-2555
    Fits: DLM
    $27.20
    $27.20
  • 52120 Extension Spring 25"Lg 3-1/4"Od, 42 Coils .475 Wire - Rite-Hite
    52120 Extension Spring 25"Lg 3-1/4"Od, 42 Coils .475 Wire
    SKU: 52120
    Fits: Rite-Hite
    $153.05
    $153.05
  • OTH-2576 3-7/8" x24" 37 coils Main Spring for 8' Leveler (DOTH-2576) - DLM
    OTH-2576 3-7/8" x24" 37 coils Main Spring for 8' Leveler (DOTH-2576)
    SKU: DOTH-2576
    Fits: DLM
    $118.00
    $118.00
  • 333-043 Spring, Extension Medium 16 Or 18" Lip 23 Coils .310 12 5/8" Oal 3 1/4" Od - Serco
    333-043 Spring, Extension Medium 16 Or 18" Lip 23 Coils .310 12 5/8" Oal 3 1/4" Od
    SKU: 333-043
    Fits: Serco
    $37.20
    $37.20
  • 113-143 100"Lg Flat Coil Spring For Blue Giant Holdown (Box Style Holdown) - Blue Giant
    113-143 100"Lg Flat Coil Spring For Blue Giant Holdown (Box Style Holdown)
    SKU: 113-143
    Fits: Blue Giant
    $64.20
    $64.20
  • 109-107 Spring 3 5/8" Long, 1" Dia. - Blue Giant
    109-107 Spring 3 5/8" Long, 1" Dia.
    SKU: 109-107
    Fits: Blue Giant
    $30.50
    $30.50
  • 109-107N/S, SPRING 3-3/4" LONG, 1/2" DIA (NEW STYLE) - Excel Solutions
    109-107N/S, SPRING 3-3/4" LONG, 1/2" DIA (NEW STYLE)
    SKU: 109-107N/S
    Fits: Excel Solutions
    $21.70
    $21.70
  • 0941-0013 Lip Latch Spring - Poweramp
    0941-0013 Lip Latch Spring
    SKU: 0941-0013
    Fits: Poweramp
    $14.60
    $14.60
  • SMF5036 10' Snubber Assy. Kit Chain, Chain Stop, Shackle and Extension Spring - Serco
    SMF5036 10' Snubber Assy. Kit Chain, Chain Stop, Shackle and Extension Spring
    SKU: SMF5036
    Fits: Serco
    $95.80
    $95.80
  • SMF5035 8' Snubber Assy. Kit Chain, Chain Stop, Shackles and Extension Spring - Serco
    SMF5035 8' Snubber Assy. Kit Chain, Chain Stop, Shackles and Extension Spring
    SKU: SMF5035
    Fits: Serco
    $95.80
    $95.80
  • 600-6107 Gas Spring - Serco
    600-6107 Gas Spring
    SKU: 600-6107
    Fits: Serco
    $123.90
    $123.90
  • 6031 Spring Pull Bar For 3 #52100 Springs (Offset) - Rite-Hite
    6031 Spring Pull Bar For 3 #52100 Springs (Offset)
    SKU: 6031
    Fits: Rite-Hite
    $105.05
    $105.05
  • 6059 Pull Bar For 2 # 52100 Spring - Rite-Hite
    6059 Pull Bar For 2 # 52100 Spring
    SKU: 6059
    Fits: Rite-Hite
    $74.20
    $74.20
  • 6059-L Pull Bar For 2 # 52100 Spring W/20" Of Threaded Rod - Rite-Hite
    6059-L Pull Bar For 2 # 52100 Spring W/20" Of Threaded Rod
    SKU: 6059-L
    Fits: Rite-Hite
    $128.80
    $128.80
  • 709-437 Gas Spring 16 1/2" Lg - Kelley
    709-437 Gas Spring 16 1/2" Lg
    SKU: 709-437
    Fits: Kelley
    $109.80
    $109.80
  • 6507AA EOD Linkage Kit - Main Springs Not Included - Copperloy
    6507AA EOD Linkage Kit - Main Springs Not Included
    SKU: 6507AA
    Fits: Copperloy
    $422.40
    $422.40
  • 333-047 Spring (Ls 4) - Serco
    333-047 Spring (Ls 4)
    SKU: 333-047
    Fits: Serco
    $12.00
    $12.00
  • 333-044 Spring, Extension Large 20" Lip 3 7/8" Od, 20 Coils, .380' - Serco
    333-044 Spring, Extension Large 20" Lip 3 7/8" Od, 20 Coils, .380'
    SKU: 333-044
    Fits: Serco
    $65.70
    $65.70
  • 333-040 Spring, Extension Medium Superseded By 333-043 - Serco
    333-040 Spring, Extension Medium Superseded By 333-043
    SKU: 333-040
    Fits: Serco
    $37.90
    $37.90
  • 333-037 Spring (Holdown Return N/S) - Serco
    333-037 Spring (Holdown Return N/S)
    SKU: 333-037
    Fits: Serco
    $24.90
    $24.90
Preview SKU Title Fits Brand Price Purchase
52100 Extension Spring 23-1/2"Lg 3"Od, 41 Coils .435 Wire - Rite-Hite
 		52100 52100 Extension Spring 23-1/2"Lg 3"Od, 41 Coils .435 Wire Rite-Hite
$133.60
$133.60
333-054 Serco Wl Main Spring Oal 25" Wire .634 Od 4" Coils 30 - Serco
 		333-054 333-054 Serco Wl Main Spring Oal 25" Wire .634 Od 4" Coils 30 Serco
$323.10
$323.10
586-3009 Spring Adjusting Loop - Serco
 		586-3009 586-3009 Spring Adjusting Loop Serco
$55.90
$55.90
302-0390 Pentalift Main Spring 21-1/2"X 3-3/8"Od 38 Coils - Pentalift
 		302-0390 302-0390 Pentalift Main Spring 21-1/2"X 3-3/8"Od 38 Coils Pentalift
$164.07
$164.07
OTH-2555 Snubber Spring (DOTH-2555) - DLM
 		DOTH-2555 OTH-2555 Snubber Spring (DOTH-2555) DLM
$27.20
$27.20
52120 Extension Spring 25"Lg 3-1/4"Od, 42 Coils .475 Wire - Rite-Hite
 		52120 52120 Extension Spring 25"Lg 3-1/4"Od, 42 Coils .475 Wire Rite-Hite
$153.05
$153.05
OTH-2576 3-7/8" x24" 37 coils Main Spring for 8' Leveler (DOTH-2576) - DLM
 		DOTH-2576 OTH-2576 3-7/8" x24" 37 coils Main Spring for 8' Leveler (DOTH-2576) DLM
$118.00
$118.00
333-043 Spring, Extension Medium 16 Or 18" Lip 23 Coils .310 12 5/8" Oal 3 1/4" Od - Serco
 		333-043 333-043 Spring, Extension Medium 16 Or 18" Lip 23 Coils .310 12 5/8" Oal 3 1/4" Od Serco
$37.20
$37.20
113-143 100"Lg Flat Coil Spring For Blue Giant Holdown (Box Style Holdown) - Blue Giant
 		113-143 113-143 100"Lg Flat Coil Spring For Blue Giant Holdown (Box Style Holdown) Blue Giant
$64.20
$64.20
109-107 Spring 3 5/8" Long, 1" Dia. - Blue Giant
 		109-107 109-107 Spring 3 5/8" Long, 1" Dia. Blue Giant
$30.50
$30.50
109-107N/S, SPRING 3-3/4" LONG, 1/2" DIA (NEW STYLE) - Excel Solutions
 		109-107N/S 109-107N/S, SPRING 3-3/4" LONG, 1/2" DIA (NEW STYLE) Excel Solutions
$21.70
$21.70
0941-0013 Lip Latch Spring - Poweramp
 		0941-0013 0941-0013 Lip Latch Spring Poweramp
$14.60
$14.60
SMF5036 10' Snubber Assy. Kit Chain, Chain Stop, Shackle and Extension Spring - Serco
 		SMF5036 SMF5036 10' Snubber Assy. Kit Chain, Chain Stop, Shackle and Extension Spring Serco
$95.80
$95.80
SMF5035 8' Snubber Assy. Kit Chain, Chain Stop, Shackles and Extension Spring - Serco
 		SMF5035 SMF5035 8' Snubber Assy. Kit Chain, Chain Stop, Shackles and Extension Spring Serco
$95.80
$95.80
600-6107 Gas Spring - Serco
 		600-6107 600-6107 Gas Spring Serco
$123.90
$123.90
6031 Spring Pull Bar For 3 #52100 Springs (Offset) - Rite-Hite
 		6031 6031 Spring Pull Bar For 3 #52100 Springs (Offset) Rite-Hite
$105.05
$105.05
6059 Pull Bar For 2 # 52100 Spring - Rite-Hite
 		6059 6059 Pull Bar For 2 # 52100 Spring Rite-Hite
$74.20
$74.20
6059-L Pull Bar For 2 # 52100 Spring W/20" Of Threaded Rod - Rite-Hite
 		6059-L 6059-L Pull Bar For 2 # 52100 Spring W/20" Of Threaded Rod Rite-Hite
$128.80
$128.80
709-437 Gas Spring 16 1/2" Lg - Kelley
 		709-437 709-437 Gas Spring 16 1/2" Lg Kelley
$109.80
$109.80
6507AA EOD Linkage Kit - Main Springs Not Included - Copperloy
 		6507AA 6507AA EOD Linkage Kit - Main Springs Not Included Copperloy
$422.40
$422.40
333-047 Spring (Ls 4) - Serco
 		333-047 333-047 Spring (Ls 4) Serco
$12.00
$12.00
333-044 Spring, Extension Large 20" Lip 3 7/8" Od, 20 Coils, .380' - Serco
 		333-044 333-044 Spring, Extension Large 20" Lip 3 7/8" Od, 20 Coils, .380' Serco
$65.70
$65.70
333-040 Spring, Extension Medium Superseded By 333-043 - Serco
 		333-040 333-040 Spring, Extension Medium Superseded By 333-043 Serco
$37.90
$37.90
333-037 Spring (Holdown Return N/S) - Serco
 		333-037 333-037 Spring (Holdown Return N/S) Serco
$24.90
$24.90