Category 04 - Medium Duty Casters
Acorn™ is known as the Caster and Wheel Experts for U.S. and EURO standards. We design the best casters and wheels to meet every load requirement and application from Categories 1-10.

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Kingpin Casters
Hybrid Casters
Kingpinless Casters
Shock Absorbing Casters
Stainless Steel Casters

4-16 Series Cold Forged Caster Load Capacity Up to 1250 lbs. • Top Plate / Yoke Base: Cold-Forged from 1/4" steel plate • Full double ball swivel bearing • Heat-treated raceways • Kingpin: 5/8" or 3/4" • Zerk fitting in swivel and in recessed head of hollow axle • Top Plate Size: 16 Download 4-16 Caster PDF

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4-16J Series Bright Zinc Plated Caster Load Capacity Up to 1250 lbs. • Finish: bright zinc plating to resist rust and corrosion. • Design: fork legs formed from 1/4” thick steel • Swivel Construction: double ball bearing with hardened raceways. • Axle: 1/2” diameter. • King Pin: 5/8” steel rivet, hydraulically upset. • Zerk Grease Fitting: swivel raceway. • Fork Leg Spacing: 2-1/2” Download 4-16J Caster PDF

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4-16M Series Yellow Zinc (w/ Adjustable Total Lock) Caster Load Capacity Up to 1000 lbs. • Top Plate / Yoke Base: Cold-Forged from 1/4" steel plate • Full double ball swivel bearing • Heat-treated raceways • Kingpin & Nut: 5/8" • Zerk fitting in swivel and in recessed head of hollow axle • Top Plate Sizes: 12, 16 (standard) Download 4-16M Caster PDF

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4-71 Series Hot Forged Caster Load Capacity Up to 1500 lbs. • Top Plate: AISI 1045 drop-forged steel for enhanced strength • Double ball bearing with coined “deep-groove” load and machined component thrust raceway • Kingpin & Nut: 3/4" • Zerk fitting in swivel and in recessed head of hollow axle • Top Plate Sizes: 71 (standard), C, H, J Download 4-71 Caster PDF

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4-71HD Series Hot Forged (w/ Total Lock) Caster Load Capacity Up to 1200 lbs. • Top Plate: Single piece hot forged alloy steel • Integrally forged kingpin • Forged lower raceway • Sealed, double-ball raceways • CNC machined precision raceways • Induction hardened main raceways • 1/4" legs robotically welded inside and outside • Finish: Zinc passivated or black • Optional 4-position directional lock slots • Top Plate Size: 71 Download 4-71HD Caster PDF

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4-16E Series 46 Hybrid / Heavy Duty Yoke Load Capacity Up to 2000 lbs. • Kingpinless strength with Kingpin simplicity • Kingpinless style drop forged raceway • 3/8” Ball bearings (HRC45 steel) • 3/4” Kingpin / Nut hardened • 1/4” Cold forged top plate (ASTM 1045) • Long life of caster with low cost • Extra high endurance in distance traveled Download 4-16E Series PDF

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4-16K Series Welded Steel Caster Load Capacity Up to 1400 lbs. • Top Plate: 5/16" AISI 1045 steel welded and heat treated Yoke Base: Notched AISI 1045 steel • Swivel Section: One row of 3/8" ball bearings mounted in a heat-treated precision machined offset raceway • Finish: Zinc plated • Top Plate Sizes: 12, 16 (standard), J, K Download 4-16K Caster PDF

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4-16KZT Series Precision Swivel Caster Load Capacity Up to 1250 lbs. • Top Plate: Cold formed from 1/4" steel plate. • Yoke base: Notched for factory or field-installable 4-position swivel lock  • Swivel Section: Precision sealed ball bearing • Legs: 1/4” steel, formed to increase strength and welded on inside and outside of yoke base • Top Plate Sizes: 12, 16 (standard), 62 Download 4-16KZT Caster PDF

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4-71KJ Series Bright Zinc Plated Caster Load Capacity Up to 1400 lbs. • Design: kingpinless style swivel raceway. • Swivel Construction: 5/16” thick 1045 steel top plate; one row of 3/8” ball bearings mounted in a heat treated precision machined raceway. • Finish: bright zinc plating to resist rust and corrosion. • Axle: 1/2” diameter with lock nut. • Fork Legs: 1/4” x 2” 1045 steel welded inside and out. • Zerk Grease Fitting: swivel raceway and wheels with roller bearings Download 4-71KJ Caster PDF

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4-71KHD Series Precision Caster (w/ Adjustable Total Lock) Load Capacity Up to 1400 lbs. • Single piece forged alloy steel top plate and fork base • Precision raceways, CNC machined 2-1/8" diameter with 5/16" balls • Induction hardened raceway ensure uniform depth of hardness • Totally sealed swivel head • 1/4" thick formed legs robotically welded inside and outside to 2-1/2" fork spacing • 1/2" wheel axle • Finish: Bright zinc plated • Top Plate Sizes: 71 (standard), 72 Download 4-71KHD Caster PDF

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4-71KHD/SA Series Shock Absorbing Caster Load Capacity Up to 1200 lbs. • Single piece forged alloy steel top plate and fork base • Precision CNC machined raceways / Induction hardened raceways • Totally sealed swivel head with grease nipple • Specific elastomeric spring elements are available to suit different load ranges • Strong 1/4" thick fabricated construction of forks • Finish: Zinc plated, ROHS compliant or black polymer color-coated • Top Plate Size: 16 Download 4-71KHD/SA Caster PDF

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4-16SL Series Shock Absorbing Caster Load Capacity Up to 1000 lbs. • Oil Impregnated lubricated sintered bearings for all moving parts • Sealed precision ball bearings in the wheel – permanently lubricated • Sealed swivel assembly with grease fitting • Various mounting plates and stems are available • Top Plate Size: 16 Download 4-16SL Caster PDF

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4-16SA Series Shock Absorbing Caster Load Capacity Up to 500 lbs. • Load Springs: Maximum rated capacity loads deflect wheel approximately 3/8" (50%) • Swivel Section: Cold formed, hardened double ball bearing raceways • Legs: 1/4" steel cold formed • King Bolt: 5/8" diameter orbitally spun steel rivet • Top Plate Size: 16 Download 4-16SA Caster PDF

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4-16SS Series Kingpin / Stainless Steel Load Capacity Up to 1000 lbs. • Type 304 Stainless steel double ball raceway with stainless steel balls • Zerk Fitting in the swivel section and head of the axle bolt • Stainless steel Kingpin & Nut: 5/8" diameter • Top Plate & Legs: 1/4" stainless steel • Axle: Stainless steel / Lock Nut: 1/2" with & without stainless steel zerk Note: zerk not necessary with precision ball bearing wheels • Various stainless steel stem sizes available • Top Plate Sizes: 12, 16 (standard), 62, ISO, K5, PFI Download 4-16SS Series PDF

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4-16M/PSS Series Kingpin / Polished Stainless Steel Load Capacity Up to 900 lbs. • Constructed of 304 polished stainless steel for added corrosion protection • Top Plate, Fork Legs and Yoke Base: 1/4" thick • Dual ball swivel raceways for added strength • Swivel seals are standard for added protection • Grease fitting in swivel raceway • Top Plate Size: 16 Download 4-16M/PSS Series PDF

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4-16PSS Series Kingpin / Polished Stainless Steel Load Capacity Up to 1200 lbs. • Constructed of 304 polished stainless steel • Top Plate / Yoke Base: 1/4" • Swivel Section: Double stainless steel ball bearing raceways • Solid axle with delrin and precision ball bearings • Legs: 1/4” stainless steel welded to the yoke base • Top Plate Size: 16 Download 4-16PSS Series PDF

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4-16K/PSS Series Kingpinless / Polished Stainless Steel Load Capacity Up to 1400 lbs. • Constructed of 304 polished stainless steel • Top Plate: 5/16" welded construction • Yoke Base: Notched stainless steel welded inside and out • Legs: Welded inside and out • Swivel Section: One row of 3/8" ball bearings mounted in a precision machined raceway • Alternate or custom caster configurations available • Top Plate Size: 16 (standard), D, J, K Download 4-16K/PSS Series PDF

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4-71KHD/PSS Series Kingpinless HD/ Polished Stainless Steel / Adjustable Total Lock Load Capacity Up to 2000 lbs. • Constructed of 304 polished stainless steel • Precision CNC machined raceways • Totally sealed swivel head with grease nipple • 1/4" thick formed legs robotically welded inside and outside to 2-1/2" fork spacing • Finish: Polished bright or bead blasted • Top Plate Size: 71 Download 4-71KHD/PSS Series PDF

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In-Plant Caster & Wheel Survey
Click here to download the Acorn™ In-Plant Caster & Wheel Survey PDF or Contact Acorn™ for additional information.
Learn more about the Benefits of an In-Plant Survey.

Demonstrations / Quotes
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