{"id":1944,"date":"2026-07-21T07:22:53","date_gmt":"2026-07-21T07:22:53","guid":{"rendered":"https:\/\/gearrack.top\/?p=1944"},"modified":"2026-07-21T07:22:53","modified_gmt":"2026-07-21T07:22:53","slug":"helical-gears-for-crane-and-hoist-drives","status":"publish","type":"post","link":"https:\/\/gearrack.top\/ko\/helical-gears-for-crane-and-hoist-drives\/","title":{"rendered":"Helical Gears for Crane and Hoist Drives"},"content":{"rendered":"
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GEAR APPLICATION GUIDE \u00b7 HELICAL GEAR \u00b7 H08<\/span><\/p>\n

Helical Gears for Crane and Hoist Drives:
\nOverhead Cranes, Port Hoists and Industrial Lifting Equipment<\/span><\/h1>\n

Crane and hoist helical gears operate under a duty cycle that is unique among industrial gear applications \u2014 the torque is applied in discrete, often unpredictable intervals (each lift event), with significant shock loading at the moment of load pickup when the rope suddenly tensions against a stationary or slowly moving load, and the consequence of gear failure is the risk of an uncontrolled load drop \u2014 a safety outcome that is unacceptable under any design condition. This guide covers helical gear specification, duty cycle analysis, safety factor selection, and material requirements for overhead travelling cranes, jib cranes, port container cranes, and industrial hoist units from 1 tonne through 500 tonne lifting capacity.<\/p>\n

18CrNiMo7-6 \u00b7 42CrMo4 \u00b7 M6\u2013M20 \u00b7 FEM Group M<\/span>
\nSF 1.5\u20132.5 \u00b7 DIN 5\u20137 \u00b7 Load Spectrum \u00b7 ISO 4301<\/span>
\nOverhead \u00b7 Port \u00b7 Jib Crane \u00b7 Industrial Hoist<\/span><\/div>\n<\/div>\n<\/div>\n
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DUTY CLASS<\/p>\n

FEM M3 \u2013 M8<\/p>\n

Crane mechanisms are classified by duty class per FEM (European Federation of Materials Handling) or ISO 4301\/4 \u2014 M3 (light, occasional use) through M8 (heavy, continuous industrial steel mill service). The duty class directly determines the required fatigue life of the helical gear and the appropriate service factor<\/p>\n<\/div>\n

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MODULE RANGE<\/p>\n

M6 \u2013 M20<\/p>\n

Industrial hoist (1\u201310T): M6\u2013M10. Workshop overhead crane (5\u201350T): M8\u2013M14. Heavy duty steel plant crane (100\u2013500T): M12\u2013M20. Port gantry crane hoist (40\u201380T): M10\u2013M16. All grades: 42CrMo4 QT or 18CrNiMo7-6 carburized<\/p>\n<\/div>\n

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SAFETY FACTOR<\/p>\n

S_F \u2265 1.8<\/p>\n

Minimum bending fatigue safety factor for crane hoist helical gears per FEM crane gear design rules. General workshop crane: S_F \u2265 1.8. Steel mill ladle crane: S_F \u2265 2.2. Offshore crane: S_F \u2265 2.5. Contact fatigue safety factor S_H \u2265 1.25 for all crane gears per ISO 6336<\/p>\n<\/div>\n

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QUALITY CLASS<\/p>\n

DIN 5 \u2013 7<\/p>\n

DIN 5\u20136 ground for high-speed first stage helical gears in crane hoists (motor speed 1,000\u20131,500 RPM). DIN 7 for final stage gears at drum speed below 50 RPM. All gears 100% magnetic particle inspected after heat treatment as required by crane safety standards EN 13157 and FEM 1.001<\/p>\n<\/div>\n<\/div>\n

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Crane Hoist Helical Gear Engineering \u2014 Duty Class, Load Spectrum, and Safety Requirements<\/h2>\n

The engineering of helical gears for crane and hoist drives cannot be reduced to a simple calculation of the rated lift torque divided by a service factor \u2014 the crane gear duty is fundamentally a stochastic (probabilistic) problem, where the gear experiences a statistical distribution of loads across a range from zero (hook running empty) to the rated maximum lift load, with the distribution depending on the crane\u2019s service conditions. A warehouse crane that primarily lifts palletised goods at 80\u2013100% of its rated capacity has a very different load spectrum from a scrap-handling crane that lifts electromagnet grabs at 20\u201330% of rated capacity most of the time but occasionally lifts a full grab of heavy scrap at 100% rated. Both cranes may have the same rated lift capacity, but the scrap crane accumulates far fewer high-load fatigue cycles and could potentially use lighter helical gears for the same design life \u2014 or conversely the warehouse crane needs heavier gears despite the same rating.<\/p>\n

Korea Ever-Power’s helical gears for crane hoist drives<\/a> are manufactured in 18CrNiMo7-6 case carburized (for heavy and extra-heavy duty M5\u2013M8 cranes where maximum tooth bending and contact fatigue resistance is required) and 42CrMo4 through-hardened QT (for light and medium duty M3\u2013M5 workshop crane hoists where the fatigue loading is within the capability of through-hardened steel). All crane hoist helical gears are subjected to 100% magnetic particle inspection (MPI) of all tooth surfaces and roots after final heat treatment and machining \u2014 a requirement of EN 13157 (European crane safety standard) that ensures any heat treatment cracks, grinding burns, or material defects are detected before the gear enters service. Korea Ever-Power provides MPI inspection certificates with every crane hoist helical gear shipment.<\/p>\n

The shock loading at the moment of load pickup \u2014 when the lifting rope transitions from slack (or moving slowly downward) to suddenly taking the full weight of the suspended load \u2014 generates a dynamic torque spike in the hoist gearbox that is typically 1.5\u20133.0\u00d7 the static lift torque, depending on the crane control system and the load pickup speed. Modern crane control systems with soft-start torque ramping reduce this spike to 1.5\u20132.0\u00d7 static, but older direct-on-line or two-speed motor cranes may generate spikes of 2.5\u20133.0\u00d7. The helical gear service factor for crane hoist applications must account for this pickup torque spike as well as the nominal lift load fatigue \u2014 Korea Ever-Power uses the FEM crane gear design method (FEM 1.001, 3rd edition) to calculate the equivalent constant torque at the gear\u2019s pitch point from the load spectrum and pickup shock factor, then applies this equivalent torque to the ISO 6336 fatigue calculation to determine the required module, face width, and material for the specified design life.<\/p>\n

\"carbon
Korea Ever-Power 42CrMo4 through-hardened helical gear for overhead crane hoist gearbox intermediate stage \u2014 M10, 38 teeth, helix angle 18\u00b0, HB 300\u2013340 through section, DIN 7 quality class, face width 100 mm. 100% magnetic particle inspection (MPI) on all tooth surfaces and roots after hobbing and heat treatment \u2014 no indications per EN ISO 23278 Level 1. FEM duty class M5 design: equivalent constant torque Teq = 0.82 \u00d7 T_rated (load spectrum factor K_S = 0.82 for M5 class), design life 12,500 hours (FEM M5 = 10\u2077 load cycles at Teq). Bending fatigue safety factor S_F = 1.92 (\u22651.8 FEM minimum). Contact fatigue safety factor S_H = 1.31 (\u22651.25 minimum). Material certificate, MPI certificate, dimensional inspection report supplied. Replacement for Demag, Stahl, Konecranes, and GH Cranes hoist gearbox intermediate stages up to 40T lifting capacity.<\/figcaption><\/figure>\n<\/section>\n
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Crane Type Application Specifications<\/h2>\n
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\n
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CRANE 01<\/p>\n

OVERHEAD TRAVELLING
\nCRANE (EOT)<\/p>\n<\/div>\n

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Helical gear specification:<\/strong> M8\u2013M16, 42CrMo4 QT HB 280\u2013330 (M3\u2013M5 duty class) or 18CrNiMo7-6 carburized (M6\u2013M8 duty class), DIN 6\u20137, FEM calculation per FEM 1.001, magnetic particle inspection 100%. Overhead travelling cranes (EOT cranes) in manufacturing and warehouse facilities are the most common crane type globally \u2014 bridge cranes on a pair of runway rails, with the hoist trolley traversing along the bridge beam. The hoist gearbox on an EOT crane is typically a 2-stage or 3-stage helical gear reducer mounted on the trolley frame, driving the rope drum through the third gear stage. Duty classes range from M3 (infrequent use maintenance crane) to M7 (continuous steel mill casting crane). Korea Ever-Power supplies EOT crane hoist helical gear replacement sets for Demag (DH, DC series), Stahl (SH series), Konecranes (XN, CXT series), GH Cranes, Dongqi, and all major EOT crane manufacturers. Most EOT crane hoist gearboxes are 2-stage helical reducers with module M8\u2013M12 in stage 1 and M10\u2013M14 in stage 2 for capacities of 5\u201350T \u2014 these are the highest-volume crane gear replacement parts and Korea Ever-Power maintains production records for the 50 most common gearbox models.<\/p>\n<\/div>\n<\/div>\n

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CRANE 02<\/p>\n

PORT CONTAINER
\nGANTRY CRANE<\/p>\n<\/div>\n

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Helical gear specification:<\/strong> M10\u2013M18, 18CrNiMo7-6 carburized HRC 58\u201362 (all stages \u2014 port cranes are M7\u2013M8 duty due to continuous 24h\/day container handling operation), DIN 6 ground, corrosion-resistant gear oil for marine atmosphere, 3-stage helical reduction. Port container cranes (ship-to-shore cranes at container terminals) handle 20\u201340-foot ISO containers weighing up to 40 tonnes at rates of 25\u201335 moves per hour per crane, operating 20+ hours per day. The hoist gearbox on a ship-to-shore crane is the single most critical mechanical component in the terminal\u2019s throughput capacity \u2014 a gearbox failure requiring crane downtime costs the terminal operator $5,000\u2013$20,000 per hour in lost container moves during peak vessel operations. Korea Ever-Power port crane hoist helical gears are designed to FEM M7\u2013M8 duty class with 18CrNiMo7-6 carburized material and DIN 6 quality class as standard for all port crane applications \u2014 the first-stage pinion gear at motor speed (750\u20131,000 RPM) is ground to DIN 5 at PLV above 8 m\/s. Marine-environment port crane gearboxes require ISO VG 220 or VG 320 gear oil with corrosion inhibitor additive package for the salt-air coastal atmosphere. Korea Ever-Power supplies port crane hoist helical gear sets for Liebherr, Konecranes (former MacGREGOR), ZPMC, Manitowoc, and Reggiane port crane models.<\/p>\n<\/div>\n<\/div>\n

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CRANE 03<\/p>\n

STEEL PLANT
\nLADLE \/ CHARGING CRANE<\/p>\n<\/div>\n

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Helical gear specification:<\/strong> M12\u2013M20, 18CrNiMo7-6 carburized, DIN 5\u20136 ground, FEM M7\u2013M8 duty, S_F \u2265 2.2, heat-resistant gear oil ISO VG 320 (for gearboxes exposed to radiant heat from the steel melt), high-temperature shaft seals (FKM rated to 180\u00b0C) for the gearbox shaft entries nearest the molten steel ladle. Steel plant ladle cranes (which transport liquid steel in ladles from the basic oxygen furnace or electric arc furnace to the continuous caster) and charging cranes (which charge scrap and lime into the EAF vessel) represent the most demanding crane duty in industry \u2014 M7\u2013M8 class, heavy loads at near-rated capacity on most lifts, exposure to radiant heat from molten steel that elevates gearbox temperatures to 50\u201380\u00b0C above ambient even with thermal shielding. The consequence of a ladle crane gear failure while carrying a full ladle of liquid steel is catastrophic \u2014 the ladle cannot be set down safely with the crane failed and emergency procedures involve extended cooling periods. Ladle crane hoist gearboxes are designed with redundant safety systems and the gears are specified with higher safety factors than standard crane gears. Korea Ever-Power ladle crane helical gear sets are designed to S_F \u2265 2.2 (vs 1.8 for workshop EOT cranes) with 18CrNiMo7-6 carburized material in all stages.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

\"Korea
Korea Ever-Power precision gear measurement and quality inspection facility \u2014 100% magnetic particle inspection (MPI) of crane hoist helical gears using fluorescent magnetic particle method per EN ISO 23278. MPI is conducted after final machining and heat treatment on all crane gear tooth surfaces and roots \u2014 the sensitivity of fluorescent MPI can detect surface cracks with opening widths as small as 0.001 mm, providing confidence that the gear tooth surface is free of heat treatment cracks, quench cracks, or grinding burns that would cause premature fatigue failure in crane service. Korea Ever-Power issues a formal MPI inspection certificate for each crane gear lot, signed by a qualified NDT Level 2 inspector, meeting the EN 13157 crane safety standard documentation requirements for lifting equipment gear components.<\/figcaption><\/figure>\n<\/section>\n
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FEM Duty Class and Helical Gear Sizing \u2014 A Practical Guide<\/h2>\n

The FEM (F\u00e9d\u00e9ration Europ\u00e9enne de la Manutention, now FEM MHE) classification system for crane mechanisms provides a structured approach to helical gear design that properly accounts for the variable loading of crane operations \u2014 recognising that a crane hoist gear does not see its rated load on every lift. The FEM crane mechanism classification combines two parameters: the mechanism group (M1\u2013M8, determined from the expected total number of working cycles over the crane\u2019s design life) and the load spectrum class (L1\u2013L4, determined from the proportion of lifts at rated load vs partial loads). The combination gives the mechanism class that directly determines the required fatigue life of the helical gear.<\/p>\n

\n\n\n\n\n\n\n\n\n\n
CRANE APPLICATION<\/th>\nFEM CLASS<\/th>\nDESIGN CYCLES<\/th>\nMATERIAL<\/th>\nS_F MIN.<\/th>\nDIN CLASS<\/th>\n<\/tr>\n<\/thead>\n
Maintenance, light shop crane<\/td>\nM3<\/td>\n6.3 \u00d7 10\u2074<\/td>\n42CrMo4<\/td>\n1.50<\/td>\nDIN 7<\/td>\n<\/tr>\n
General factory overhead crane<\/td>\nM5<\/td>\n2.0 \u00d7 10\u2076<\/td>\n42CrMo4<\/td>\n1.80<\/td>\nDIN 6\u20137<\/td>\n<\/tr>\n
Port container crane (STS)<\/td>\nM7<\/td>\n1.25 \u00d7 10\u2077<\/td>\n18CrNiMo7-6<\/td>\n2.00<\/td>\nDIN 5\u20136<\/td>\n<\/tr>\n
Steel plant ladle crane<\/td>\nM7\u2013M8<\/td>\n1.25 \u00d7 10\u2077+<\/td>\n18CrNiMo7-6<\/td>\n2.20<\/td>\nDIN 5\u20136<\/td>\n<\/tr>\n
Offshore crane (DNV-GL class)<\/td>\nM6\u2013M8<\/td>\nApplication-dependent<\/td>\n18CrNiMo7-6<\/td>\n2.50<\/td>\nDIN 5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\"Korea
Korea Ever-Power production facility for crane hoist helical gears \u2014 CNC gear hobbing, profile grinding, and non-destructive examination. Large-module crane gears (M12\u2013M20) are manufactured from individually forged 42CrMo4 or 18CrNiMo7-6 blanks \u2014 not machined from bar stock \u2014 to ensure the required grain flow orientation around the tooth profile. Forging traceability (heat number, forge date, heat treatment record) is maintained for each gear in the lot and included in the documentation package shipped with the gears for incorporation into the crane\u2019s maintenance and certification records as required by lifting equipment safety regulations (LOLER in the UK, 2006\/42\/EC Machinery Directive in the EU, OSHA 1910.179 in the US).<\/figcaption><\/figure>\n<\/section>\n
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Frequently Asked Questions \u2014 Crane and Hoist Helical Gears<\/h2>\n
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Q 01<\/span><\/p>\n

Our 20-tonne overhead crane hoist gearbox is showing tooth pitting on the first stage helical gears after only 3 years in service. The crane was specified as FEM M5 duty. What is causing this early pitting?<\/p>\n<\/div>\n

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Contact fatigue pitting on first-stage helical gears in a crane hoist gearbox after 3 years of M5 duty service indicates the actual load on the gear is higher than the M5 design load, or the gear material\/heat treatment has not achieved the required contact fatigue resistance. Diagnosis: (1) Verify actual crane utilisation vs M5 design assumption:<\/strong> M5 duty class assumes a specific number of load cycles at the design load spectrum (load spectrum class L2 or L3). If the crane has actually been used as an M6 or M7 machine (higher frequency of use or heavier average loads than designed), the gear will exhaust its M5 design life in half the expected time. Request the crane control system\u2019s lift cycle log if available \u2014 modern cranes with electronic load monitoring can provide the actual load history. (2) Verify oil viscosity and condition:<\/strong> contact pitting is accelerated by inadequate EHL film \u2014 check the current oil viscosity grade against the gearbox manufacturer\u2019s specification and measure the current oil viscosity. If the oil has degraded to below the specified viscosity by more than 20%, the film parameter \u039b may have dropped below 1.0, causing progressive surface pitting. (3) Check gear surface hardness:<\/strong> if the first-stage gears are 42CrMo4 QT and the Brinell hardness has been measured below 280 HB (indicating inadequate heat treatment), the permissible contact stress \u03c3_H is below specification. Korea Ever-Power can provide a replacement first-stage helical gear set in 18CrNiMo7-6 carburized (higher contact fatigue resistance for the same module) if the original 42CrMo4 design is insufficient for the actual operating duty. Contact with the gearbox model, gear dimensions, and the crane usage history for a specific recommendation.<\/p>\n<\/div>\n<\/div>\n

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Q 02<\/span><\/p>\n

What documentation must accompany crane hoist helical gears to satisfy EN 13157 and the Machinery Directive for the crane\u2019s CE marking?<\/p>\n<\/div>\n

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The documentation requirements for crane hoist helical gears under EN 13157 (Cranes \u2014 Safety: Hand powered cranes) and the Machinery Directive 2006\/42\/EC (which covers powered cranes) encompass both the gear component supplier\u2019s documentation and the crane manufacturer\u2019s technical file. Korea Ever-Power supplies the following documentation with each crane hoist helical gear order: (1) Material certificate:<\/strong> EN 10204 Type 3.1 (for critical components) or Type 2.2 (for standard components), confirming the material is as specified (42CrMo4 or 18CrNiMo7-6) with chemical composition and mechanical properties (Rm, Rp0.2, A, KV at specified temperature) per the drawing requirement. (2) Heat treatment record:<\/strong> hardness test results on at least 3 tooth positions confirming the heat treatment has achieved the specified hardness range; for carburized gears, case depth measurement confirming minimum effective case depth. (3) Magnetic particle inspection (MPI) report:<\/strong> 100% MPI of all tooth surfaces and roots with zero relevant indications, signed by a qualified NDT Level 2 inspector per EN ISO 9712. This is mandatory for all crane lifting gear per EN 13157. (4) Dimensional inspection report:<\/strong> all critical dimensions per the drawing confirmed, including tooth profile and lead measurements per DIN quality class. (5) ISO 9001:2015 certificate:<\/strong> Korea Ever-Power\u2019s current quality management certification. The crane manufacturer incorporates these documents into the crane\u2019s technical file for the CE marking process. If any document is missing, the CE marking authority may request a new conformity assessment \u2014 Korea Ever-Power provides all documentation as standard for all crane hoist helical gear orders without additional charge.<\/p>\n<\/div>\n<\/div>\n

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Q 03<\/span><\/p>\n

How do I correctly specify a replacement helical gear set for a Demag DH hoist gearbox when the original part numbers are no longer available from Demag?<\/p>\n<\/div>\n

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Demag DH series hoist gearboxes are among the most widely installed crane hoist units globally, and Korea Ever-Power maintains a complete reference database of all DH series gear specifications from the DH 1 through DH 10 (and the newer DC series) covering all winding classes and gear ratios. For Demag DH gearboxes where the original part number is no longer available from the OEM: (1) Identify the DH type and winding class:<\/strong> the DH type (DH1, DH2, DH5, DH10) and winding class (W1\u2013W6 or FEM duty) are stamped on the gearbox nameplate. Korea Ever-Power can cross-reference from the DH type and winding class to the full gear specification for stages 1 and 2. (2) Confirm the gear ratio:<\/strong> the ratio is also on the nameplate; confirm it matches the Korea Ever-Power database record for the DH type (there are occasionally multiple ratio options for the same DH type). (3) Order as a matched pair:<\/strong> when replacing Demag DH hoist gears, replace both the pinion and the wheel in the affected stage simultaneously \u2014 replacing only the pinion against a worn wheel significantly shortens the new pinion\u2019s service life because the new pinion engages the existing wear pattern of the old wheel rather than a fresh unworn surface. Korea Ever-Power DH series replacement gears are manufactured in the same material and quality class as the original Demag specification \u2014 42CrMo4 QT for DH1\u2013DH5 standard winding classes, 18CrNiMo7-6 carburized for DH5\u2013DH10 heavy duty winding classes \u2014 and include all EN 13157 documentation as standard.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

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Explore Korea Ever-Power Gear Categories<\/h2>\n

Seven precision gear product lines for crane, hoist, mining, industrial and port handling applications worldwide.<\/p>\n<\/div>\n

\n
\"spur<\/p>\n
\n

Spur Gears<\/a><\/p>\n

M8\u2013M20 \u00b7 forged \u00b7 crane auxiliary<\/p>\n<\/div>\n<\/div>\n

\"helical<\/p>\n
\n

Helical Gears<\/a><\/p>\n

FEM M3\u2013M8 \u00b7 DIN 5\u20137 \u00b7 hoist gearbox<\/p>\n<\/div>\n<\/div>\n

\"bevel<\/p>\n
\n

\ubca0\ubca8 \uae30\uc5b4<\/a><\/p>\n

Right-angle \u00b7 crane cross-travel \u00b7 slew<\/p>\n<\/div>\n<\/div>\n

\"worm<\/p>\n
\n

Worm Gears<\/a><\/p>\n

Self-locking \u00b7 light hoist \u00b7 hand chain<\/p>\n<\/div>\n<\/div>\n

\"ring<\/p>\n
\n

Ring Gears<\/a><\/p>\n

Slewing \u00b7 crane slew ring \u00b7 large OD<\/p>\n<\/div>\n<\/div>\n

\"planetary<\/p>\n
\n

Planetary Gears<\/a><\/p>\n

Compact hoist \u00b7 drum \u00b7 travel drive<\/p>\n<\/div>\n<\/div>\n

\"plastic<\/p>\n
\n

Plastic Gears<\/a><\/p>\n

Limit switch \u00b7 sensor \u00b7 instrument<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

\n
<\/div>\n

GET A QUOTATION \u00b7 KOREA EVER-POWER<\/p>\n

Need Helical Gears for Crane and Hoist Drives?<\/h2>\n

Korea Ever-Power manufactures 18CrNiMo7-6 and 42CrMo4 helical gears for all crane and hoist applications \u2014 EOT workshop cranes (FEM M3\u2013M5), port container gantry cranes (M7), steel plant ladle cranes (M7\u2013M8), and offshore cranes (M6\u2013M8 with DNV GL documentation). Module M6\u2013M20, DIN 5\u20137, 100% MPI included, EN 10204 3.1 material certificates. Cross-reference for Demag DH, Stahl SH, Konecranes, Liebherr, and ZPMC. ISO 9001:2015 certified.<\/p>\n

Request a Quotation \u2192<\/a><\/p>\n<\/div>\n

\ud3b8\uc9d1\uc790: Cxm<\/em><\/p>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

GEAR APPLICATION GUIDE \u00b7 HELICAL GEAR \u00b7 H08 Helical Gears for Crane and Hoist Drives: Overhead Cranes, Port Hoists and Industrial Lifting Equipment Crane and hoist helical gears operate under a duty cycle that is unique among industrial gear applications \u2014 the torque is applied in discrete, often unpredictable intervals (each lift event), with significant […]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[4566],"tags":[],"class_list":["post-1944","post","type-post","status-publish","format-standard","hentry","category-application-of-gears"],"_links":{"self":[{"href":"https:\/\/gearrack.top\/ko\/wp-json\/wp\/v2\/posts\/1944","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gearrack.top\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gearrack.top\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gearrack.top\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gearrack.top\/ko\/wp-json\/wp\/v2\/comments?post=1944"}],"version-history":[{"count":1,"href":"https:\/\/gearrack.top\/ko\/wp-json\/wp\/v2\/posts\/1944\/revisions"}],"predecessor-version":[{"id":1947,"href":"https:\/\/gearrack.top\/ko\/wp-json\/wp\/v2\/posts\/1944\/revisions\/1947"}],"wp:attachment":[{"href":"https:\/\/gearrack.top\/ko\/wp-json\/wp\/v2\/media?parent=1944"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gearrack.top\/ko\/wp-json\/wp\/v2\/categories?post=1944"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gearrack.top\/ko\/wp-json\/wp\/v2\/tags?post=1944"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}