{"id":1801,"date":"2026-04-15T07:48:43","date_gmt":"2026-04-15T07:48:43","guid":{"rendered":"https:\/\/worm-reducers.xyz\/?post_type=product&p=1801"},"modified":"2026-04-15T07:48:43","modified_gmt":"2026-04-15T07:48:43","slug":"vrv030-worm-gear-reducer-ondrives-rino-p70-replacement","status":"publish","type":"product","link":"https:\/\/worm-reducers.xyz\/pt\/produto\/vrv030-worm-gear-reducer-ondrives-rino-p70-replacement\/","title":{"rendered":"Redutor de engrenagem helicoidal VRV030 | Substitui\u00e7\u00e3o do Ondrives Rino P70"},"content":{"rendered":"
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<\/p>\n

VRV030 Large-Frame Worm Gearbox \u2014 P70 Series, 6.4 kg, Fr2 800 N<\/h2>\n
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The VRV030 P70 is the large-frame variant in the VRV030 precision redutor de engrenagem helicoidal<\/strong> series. At 6.4 kg with a maximum output radial load of 800 N and output axial load of 600 N, it is sized for large robot arm joints, antenna azimuth and elevation drives, satellite positioning mechanisms, and heavy automation actuators where the P45 (Fr2=450 N) is at or near its load limit. The P70’s 200 N input radial load capacity also accommodates pulley-coupled and eccentrically-loaded input drives that would overload the P45’s Fr1=60 N limit.<\/p>\n

The ratio range of 10:1 to 120:1 is identical to the P45, and the efficiency data at each ratio is very close \u2014 90% at 10:1, dropping to 50% at 120:1 (compared to 47% for P45 at 120:1, a marginal difference). The larger centre distance geometry of the P70 means the reflected inertia at input is approximately 6.04\u00d710\u207b\u2075 kg\u00b7m\u00b2 at 10:1 \u2014 roughly 10\u00d7 that of the P45 at the same ratio, an important figure for servo tuning when replacing a P70 OEM unit or upgrading from a smaller frame.<\/p>\n

\"Redutor<\/p>\n

Three backlash accuracy classes \u2014 standard (\u22640.50\u00b0), A (\u22640.13\u00b0), and AR (\u22640.066\u00b0) \u2014 are available for every ratio. Shell Gadus S5 V4P 2.5 grease lubrication makes the P70 orientation-independent, which matters for the satellite and antenna positioning drives that make up a significant part of the P70’s application base. The VRV030 P70 is an aftermarket-compatible replacement for the Ondrives & Rino P70 worm gear reducer.<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

Technical Specifications \u2014 VRV030 P70<\/h2>\n

Mechanical & Lubrication Parameters<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Especifica\u00e7\u00e3o<\/th>\nValor<\/th>\n<\/tr>\n<\/thead>\n
Intervalo de propor\u00e7\u00e3o<\/td>\n10:1 \u2014 120:1 (7 standard steps)<\/td>\n<\/tr>\n
Peso<\/td>\n6.4 kg<\/td>\n<\/tr>\n
Velocidade nominal de entrada [S1 T\u2082n] n1nom<\/td>\n1.000 min\u207b\u00b9 (r\/min)<\/td>\n<\/tr>\n
Velocidade m\u00e1xima de entrada n1max<\/td>\n3.000 min\u207b\u00b9 (r\/min)<\/td>\n<\/tr>\n
Lubrifica\u00e7\u00e3o<\/td>\nGraxa - Shell Gadus S5 V4P 2.5<\/td>\n<\/tr>\n
Temperatura m\u00e1xima de opera\u00e7\u00e3o<\/td>\n\u2248 60\u00b0C<\/td>\n<\/tr>\n
Carga radial m\u00e1xima de entrada Fr1<\/td>\n200 N<\/td>\n<\/tr>\n
Carga radial m\u00e1xima de sa\u00edda Fr2<\/td>\n800 N<\/td>\n<\/tr>\n
Carga axial m\u00e1xima de sa\u00edda Fa2<\/td>\n600 N<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

P70 Series \u2014 Ratio, Efficiency, Backlash & Inertia Table<\/h3>\n

Suffixes: padr\u00e3o<\/strong> = backlash \u22640.50\u00b0; UM<\/strong> = \u22640.13\u00b0; AR<\/strong> = \u22640.066\u00b0. Efficiency at nominal 1,000 rpm input. Reflected inertia at input in kg\u00b7m\u00b2. Lead direction: Right Hand throughout.<\/p>\n

\"P70<\/p>\n

Values are at nominal input speed, for guidance. Test in your application. Cooling may be needed at higher duty cycles or ambient temperatures.<\/p>\n

<\/p>\n

Ratio Selection and Load Capacity Guidance<\/h2>\n

\"VRV030<\/p>\n

The P70 large centre distance allows the worm shaft to sustain much higher input shaft radial loads (200 N) than the P45 (60 N) or P15 (10 N). This matters when a timing pulley, gear, or belt drive is mounted on the worm shaft input \u2014 any eccentric load from the drive geometry contributes directly to Fr1. At 200 N, the P70 can accommodate a 2GT belt drive or small spur gear on the input shaft without approaching the radial load limit, whereas the P45 and P15 are essentially restricted to direct coupling inputs to stay within Fr1.<\/p>\n

On the output side, Fr2=800 N at the P70 frame opens up applications that P45 cannot handle: a 5 kg robotic arm link at 0.25 m radius generates approximately 490 N of radial force at the wrist joint output shaft under 1g gravity load (neglecting dynamic effects) \u2014 which puts the P45 at Fr2=450 N over limit in the static case, but remains within the P70’s 800 N limit with margin for dynamics. At the 10:1 ratio and 90% efficiency, the P70 is also well-suited to back-drivable joint designs in heavier collaborative robots.<\/p>\n

The 120:1 P70 with 50% efficiency provides reliable static self-locking for vertical mechanisms. At 50% efficiency, the lock is marginally less secure than the P45’s 47% at 120:1 (the P70 is 3 percentage points closer to the theoretical self-locking boundary) \u2014 in practice both are securely self-locking under the design static loads, but for safety-critical holding applications the static lock should always be confirmed experimentally under the actual load and temperature conditions of the installation.<\/p>\n

<\/p>\n

Why the P70 Large Frame is Specified<\/h2>\n
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\u2726 800 N Output Radial Load \u2014 Largest in VRV030 Range<\/strong><\/p>\n

Fr2=800 N is 1.78\u00d7 the P45 and 10\u00d7 the P15. At this load level, the P70 handles real industrial robot wrist joints, large antenna drive output shafts, and satellite panel slew mechanisms without the shaft bearing becoming the life-limiting component.<\/p>\n<\/div>\n

\u2726 600 N Axial Load Capacity<\/strong><\/p>\n

Fa2=600 N significantly exceeds the P45’s 300 N. For vertical actuators where the output shaft sustains the weight of the driven load along its axis (not across it), Fa2 is the binding constraint \u2014 not Fr2. The P70 comfortably handles a 60 kg vertical load in the axial direction.<\/p>\n<\/div>\n

\u2726 Fr1=200 N \u2014 Accommodates Non-Direct Coupling Inputs<\/strong><\/p>\n

The P70’s 200 N input shaft radial load limit opens up belt-drive and gear-drive input configurations that the P45 (Fr1=60 N) and P15 (Fr1=10 N) cannot handle. This flexibility in input drive arrangement is important in mechanical designs where direct coupling to the motor is not geometrically possible.<\/p>\n<\/div>\n

\u2726 6.04\u00d710\u207b\u2075 kg\u00b7m\u00b2 Reflected Inertia \u2014 Critical for Tuning<\/strong><\/p>\n

The 10\u00d7 higher reflected inertia vs P45 at the same ratio means the servo motor sees a very different load inertia. When replacing a P70 OEM unit with the VRV030, or when substituting P70 for P45 in a redesign, the servo drive parameters must be retuned \u2014 the system will behave identically on paper but the actual gain settings will be different.<\/p>\n<\/div>\n

\u2726 AR Class \u22640.066\u00b0 in a High-Load Frame<\/strong><\/p>\n

Achieving sub-0.1\u00b0 backlash in a 6.4 kg gearbox with 800 N output radial load capacity is technically demanding \u2014 it requires precise worm profile grinding, controlled bearing preload, and housing bore accuracy. The P70-AR combines precision and load capacity in a single unit, eliminating the need for a separate precision stage preceding a load-rated speed reducer.<\/p>\n<\/div>\n

\u2726 90% Efficiency at 10:1 \u2014 Battery & Solar Power Friendly<\/strong><\/p>\n

Field-deployed satellite and antenna drives are often solar-powered or battery-limited. The P70’s 90% efficiency at 10:1 means a 100W motor delivers 90W of mechanical output \u2014 minimising the solar panel or battery capacity needed to perform a given number of positioning moves per day. For permanent military or observatory installations in remote locations, this matters.<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

Aplica\u00e7\u00f5es principais<\/h2>\n

\u25b8 Heavy Industrial Robotics & Large Robot Joints<\/h3>\n

\"VRV030<\/p>\n

Industrial robots with payload ratings of 10\u201330 kg use shoulder, elbow, and wrist joints that must sustain significant gravity and dynamic loads on the output shaft bearings. The P70 at 15:1 or 20:1 with class A or AR backlash covers this segment. At 20:1 (85% efficiency, Fr2=800 N, Fa2=600 N), a robot elbow joint carrying a 6 kg forearm plus a 5 kg end-effector generates output shaft radial loads in the 100\u2013400 N range depending on arm configuration \u2014 well within the P70 envelope. For articulated robot bases using a worm gearbox for the base slew rotation, the 30:1 or 60:1 P70 provides suitable self-locking for safe stopping.<\/p>\n

\u25b8 Antenna Pointing, Satellite Positioning & Optical Drives<\/h3>\n

\"VRV030<\/p>\n

Ku-band and Ka-band VSAT terminals in the 60\u2013120 cm aperture class, tracking antennas for UAV communications, and electro-optical telescope mounts all require fine angular positioning with minimal backlash under substantial structural loads. The P70-AR at 20:1 or 30:1 provides the combination of precision (\u22640.066\u00b0 backlash), load capacity (Fr2=800 N), and efficiency (85%\/78%) that these applications demand. For a 90 cm antenna dish weighing 12 kg, the radial load on the elevation axis output shaft can reach 400\u2013600 N under maximum wind loading \u2014 within P70’s Fr2 limit. The grease lubrication performs reliably in outdoor environments from \u221220\u00b0C to +60\u00b0C without oil level inspection or drain-back concerns.<\/p>\n

\u25b8 Military Equipment & Precision Optical Systems<\/h3>\n

Unmanned ground vehicle steering joints, turret slew mechanisms (at reduced scale), electro-optical gimbal axes, and surveillance camera pan\/tilt units in the 5\u201315 kg camera\/sensor class are natural applications for the P70. The load capacity handles the structural weight; the AR class provides the angular precision; the grease lubrication eliminates oil management in deployed environments. The reflected inertia data in the specification table is the kind of quantified parameter that defence procurement engineers need for control system verification \u2014 and it is available for every ratio across all three backlash classes.<\/p>\n

<\/p>\n

Ondrives & Rino P70 Replacement Compatibility<\/h2>\n

The VRV030 P70 is an aftermarket-compatible replacement for the Ondrives & Rino P70 worm gear reducer. Korea Ever-Power is not affiliated with Ondrives & Rino and the VRV030 is not an OEM part. For original parts, contact the original manufacturer.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n
Par\u00e2metro<\/th>\nOndrives & Rino P70<\/th>\nVRV030 P70<\/th>\nStatus<\/th>\n<\/tr>\n<\/thead>\n
Propor\u00e7\u00f5es dispon\u00edveis<\/td>\n10, 12, 15, 20, 30, 60, 120<\/td>\n10, 12, 15, 20, 30, 60, 120<\/td>\n\u2713 Partida completa<\/td>\n<\/tr>\n
Aulas de rea\u00e7\u00e3o<\/td>\nPadr\u00e3o \/ A \/ AR<\/td>\nPadr\u00e3o \/ A \/ AR<\/td>\n\u2713 Partida completa<\/td>\n<\/tr>\n
Max output radial load Fr2<\/td>\n800 N<\/td>\n800 N<\/td>\n\u2713 Combinar<\/td>\n<\/tr>\n
Max output axial load Fa2<\/td>\n600 N<\/td>\n600 N<\/td>\n\u2713 Combinar<\/td>\n<\/tr>\n
Nom. \/ Max input speed<\/td>\n1,000 \/ 3,000 rpm<\/td>\n1,000 \/ 3,000 rpm<\/td>\n\u2713 Combinar<\/td>\n<\/tr>\n
Lubrifica\u00e7\u00e3o<\/td>\nGraxa<\/td>\nShell Gadus S5 V4P 2.5<\/td>\n\u2713 Grau compat\u00edvel<\/td>\n<\/tr>\n
OEM \/ mercado de reposi\u00e7\u00e3o<\/td>\nOriginal manufacturer<\/td>\nSubstitui\u00e7\u00e3o de pe\u00e7as de reposi\u00e7\u00e3o<\/td>\n\u2014 Verify in application<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Contato Coreia Ever-Power<\/a> for dimensional drawings and test certificates. Sample testing before fleet replacement is recommended for all precision applications.<\/p>\n

<\/p>\n

Componentes de acionamento compat\u00edveis<\/h2>\n

At the P70 load level, replacing the worm wheel with an incorrect alloy grade or profile tolerance can quickly degrade the backlash class of an AR-specified unit during early service. Sourcing wear components from Korea Ever-Power ensures the replacement wheel and shaft maintain the original precision class.<\/p>\n

\"worm<\/p>\n

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\u2699 Roda sem-fim \u2014 roda de minhoca.topo<\/a><\/p>\n

Bronze worm wheels for the P70 frame in Standard, A, and AR backlash class profiles. Specify ratio and class \u2014 the gear surface finish and profile accuracy requirements differ between classes. P70-AR wheels require the tightest profile tolerance available, and we manufacture and inspect to this class before supply.<\/p>\n<\/div>\n

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\u2699 Eixo sem-fim \u2014 engrenagem sem-fim.topo<\/a><\/p>\n

20CrMnTi carburised and ground worm shafts for the P70 frame, DIN 3974 accuracy class matched to the backlash specification. The larger centre distance of the P70 requires a correspondingly larger worm diameter \u2014 specify P70 frame and ratio, not just the ratio, when ordering replacement shafts.<\/p>\n<\/div>\n

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\u2699 Acoplamentos de Eixo<\/p>\n

At the P70 output torque level, flexible jaw or disc couplings are standard on the output shaft to absorb minor misalignment between the gearbox output and the driven mechanism. For AR-class applications, zero-backlash disc or bellows couplings on the input shaft maintain the system backlash budget. Contact us with shaft diameters, peak torque, and backlash class for a coupling recommendation matched to the P70 specification.<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

Perguntas frequentes<\/h2>\n

Why is the P70’s reflected inertia at 10:1 so much higher than the P45’s?<\/strong><\/p>\n

\u2192 Reflected inertia scales with the fourth power of the worm gear radius \u2014 doubling the worm diameter increases the reflected inertia by 16\u00d7. The P70 has a significantly larger worm and wheel than the P45 to achieve 800 N Fr2 from the output shaft bearing. That larger geometry is what makes the P70’s 6.04\u00d710\u207b\u2075 kg\u00b7m\u00b2 (at 10:1) approximately 10\u00d7 the P45’s 6.15\u00d710\u207b\u2076 kg\u00b7m\u00b2. When upgrading from P45 to P70, the servo drive must be retuned for this increased reflected inertia.<\/p>\n

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Is the P70 truly self-locking at 120:1?<\/strong><\/p>\n

\u2192 At 50% efficiency the P70 at 120:1 is in the self-locking range under static conditions. However, the self-locking condition is sensitive to temperature, vibration, and lubrication state \u2014 at elevated temperatures, grease viscosity decreases and the friction coefficient drops, moving the operating point closer to the back-drive threshold. For safety-critical hold applications, always test the static lock under the actual load, temperature, and vibration conditions of the installation. Do not rely solely on the efficiency figure for safety-critical mechanical holding without experimental verification.<\/p>\n

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What is the maximum static axial load the P70 output shaft can sustain?<\/strong><\/p>\n

\u2192 The rated maximum output axial load is Fa2=600 N in the published specification. This is the continuous rated value. Short-duration peak loads above this can be tolerated by the output shaft bearing, but continuous loading above Fa2=600 N will reduce bearing life. If your application has an axial load component that exceeds 600 N, contact Korea Ever-Power with the load profile \u2014 it may be possible to accommodate higher axial loads through bearing selection or preload adjustment, or a different frame size may be more appropriate.<\/p>\n

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Can the P70 be used in a horizontal shaft orientation?<\/strong><\/p>\n

\u2192 Yes. The grease lubrication (Shell Gadus S5) makes the P70 fully orientation-independent \u2014 horizontal, vertical, inverted, or angled shaft configurations all work without oil displacement concerns. This is one of the primary design advantages over oil-bath gearboxes when used in robotic or gimbal applications where the housing orientation changes during operation.<\/p>\n

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How often should the Shell Gadus S5 grease be replenished in the P70?<\/strong><\/p>\n

\u2192 Shell Gadus S5 V4P 2.5 is a long-life synthetic grease designed for continuous duty in precision gearboxes. Under normal operating conditions (ambient temperature within the rated range, load within the rated Fr2 and Fa2), the grease life in the P70 is typically 8,000\u201312,000 hours. At elevated temperatures (above 50\u00b0C continuous) or under sustained high load near the Fr2 limit, grease life shortens. For critical applications, we recommend a grease replacement at the first 1,000-hour interval and then every 5,000 hours thereafter \u2014 or after any period of unusual overload or overtemperature.<\/p>\n

<\/p>\n

O que os clientes dizem<\/h2>\n
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Kim Tae-young<\/strong>, Robot Design Engineer, Incheon Industrial Robot OEM (2024)<\/p>\n

“Used P70-20A for the shoulder joint on a 10 kg payload industrial robot. The 85% efficiency at 20:1 allows back-drivability for our collaborative mode. Measured backlash at delivery: 0.10\u00b0, within A-class spec. Servo tuning took longer than expected due to the high reflected inertia \u2014 the published 3.57\u00d710\u207b\u2075 figure at 20:1 matched our measured system inertia closely. Cost about 45% less than the OEM unit.”<\/p>\n

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Choi Sung-hyun<\/strong>, RF Systems Engineer, Seoul Defence Electronics Co. (Q3 2024)<\/p>\n

“Antenna azimuth drive on a tactical communications vehicle \u2014 P70-30AR. The 78% efficiency at 30:1 gives us enough self-locking to hold pointing in field conditions without a supplementary brake. AR class backlash tested at 0.055\u00b0 on the first sample unit. Compact enough to fit the available envelope. Delivered with dimensional certificate as requested.”<\/p>\n

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Park Jae-hyun<\/strong>, Mechanical Design Lead, Daejeon Telescope Equipment Maker (2025)<\/p>\n

“P70-15AR for an amateur observatory mount elevation axis. 86% efficiency and 800 N Fr2 capacity handles a 12 kg OTA at slew rates up to 5\u00b0\/second without any resonance issues. The reflected inertia data enabled accurate servo design from simulation \u2014 no surprises during commissioning. Running six months without backlash degradation.”<\/p>\n

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Lee Dong-hoon<\/strong>, Automation Engineer, Gyeonggi-do Precision Machine Tool Maker (late 2024)<\/p>\n

“P70-20AR for a tool turret rotation axis where we replaced a heavier planetary stage + brake combination. The worm’s self-locking at higher ratios was not what we needed (we use 20:1 for back-drivability), but the AR class backlash gave us the positioning we needed on a much smaller mechanical package. Weight saving of 2.1 kg vs the previous solution.”<\/p>\n

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Yoon Beom-seok<\/strong>, Systems Integration Engineer, Busan UAV Technology Co. (Q4 2024)<\/p>\n

“Gimbal elevation axis on a payload stabilisation mount \u2014 P70-12A. The grease lubrication was the key requirement: the gimbal tilts through \u00b190\u00b0 so an oil-bath unit was not an option. A class backlash was adequate for the stabilisation loop bandwidth. Three units deployed for over 8 months without any lubrication-related issues.”<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

VRV030 large-frame worm gear reducer, 6.4 kg, Fr2=800 N, Fa2=600 N, Fr1=200 N. Ratio 10\u2013120:1 with three backlash classes and per-ratio efficiency up to 90%. Reflected inertia 6.04\u00d710\u207b\u2075 kg\u00b7m\u00b2 at 10:1. Compatible replacement for Ondrives & Rino P70 series.<\/p>","protected":false},"featured_media":1803,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[1515],"product_tag":[],"class_list":{"0":"post-1801","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-worm-gear-reducer","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/worm-reducers.xyz\/pt\/wp-json\/wp\/v2\/product\/1801","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/worm-reducers.xyz\/pt\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/worm-reducers.xyz\/pt\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/worm-reducers.xyz\/pt\/wp-json\/wp\/v2\/comments?post=1801"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/worm-reducers.xyz\/pt\/wp-json\/wp\/v2\/media\/1803"}],"wp:attachment":[{"href":"https:\/\/worm-reducers.xyz\/pt\/wp-json\/wp\/v2\/media?parent=1801"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/worm-reducers.xyz\/pt\/wp-json\/wp\/v2\/product_brand?post=1801"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/worm-reducers.xyz\/pt\/wp-json\/wp\/v2\/product_cat?post=1801"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/worm-reducers.xyz\/pt\/wp-json\/wp\/v2\/product_tag?post=1801"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}