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specs 37evidence [n]sources 3
356Reduction ratio
1
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field · keyvaluesource sentencesourceEvidenceRetrieved · Changed
Storage temperaturestorage_temperature
valuemeasured at Reduction ratio 1/356
-30℃～80℃
source sentenceStorage Temperature Range -30℃～80℃ -30℃～80℃
sourcehttps://aifitlab.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-08-28Changed —
Ambient temperatureambient_temperature
valuemeasured at Reduction ratio 1/356
-20℃～60℃
source sentenceOperating Temperature Range -20℃～60℃ -20℃～60℃
sourcehttps://aifitlab.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-08-28Changed —
Weightweight
valuemeasured at Reduction ratio 1/356
as printed 78.8±1g0.0788 kg
source sentenceWeight 78.8±1g 78.8±1g
sourcehttps://aifitlab.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-08-28Changed —
Reduction ratioreduction_ratio
value
as printed 1/356356
source sentenceGear Ratio 1/356 1/356
sourcehttps://aifitlab.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-08-28Changed —
Rated torquerated_torque
valuemeasured at Rated voltage 8.4V · Reduction ratio 1/356
as printed 18.75kg.cm@8.4V1.839 N·m
source sentenceRated torque 18.75kg.cm@8.4V 17.5kg.cm@12V
sourcehttps://aifitlab.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-08-28Changed —
Storage temperaturestorage_temperature
valuemeasured at Reduction ratio 1/356
-30℃～80℃
source sentenceStorage Temperature Range -30℃～80℃ -30℃～80℃
sourcehttps://robotopian.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-09-01Changed —
Ambient temperatureambient_temperature
valuemeasured at Reduction ratio 1/356
-20℃～60℃
source sentenceOperating Temperature Range -20℃～60℃ -20℃～60℃
sourcehttps://robotopian.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-09-01Changed —
Weightweight
valuemeasured at Reduction ratio 1/356
as printed 78.8±1g0.0788 kg
source sentenceWeight 78.8±1g 78.8±1g
sourcehttps://robotopian.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-09-01Changed —
Reduction ratioreduction_ratio
value
as printed 1/356356
source sentenceGear Ratio 1/356 1/356
sourcehttps://robotopian.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-09-01Changed —
Rated torquerated_torque
valuemeasured at Rated voltage 8.4V · Reduction ratio 1/356
as printed 18.75kg.cm@8.4V1.839 N·m
source sentenceRated torque 18.75kg.cm@8.4V 17.5kg.cm@12V
sourcehttps://robotopian.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-09-01Changed —
Storage temperaturestorage_temperature
valuemeasured at Reduction ratio 1/356
-30℃~80℃
source sentenceStorage Temperature Range -30℃~80℃
sourcehttps://www.zennixtek.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-09-01Changed —
Ambient temperatureambient_temperature
valuemeasured at Reduction ratio 1/356
-20℃~60℃
source sentenceOperating Temperature Range -20℃~60℃
sourcehttps://www.zennixtek.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-09-01Changed —
Weightweight
valuemeasured at Reduction ratio 1/356
as printed 78.8±1g0.0788 kg
source sentenceWeight 78.8±1g
sourcehttps://www.zennixtek.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-09-01Changed —
Reduction ratioreduction_ratio
value
as printed 1/356356
source sentenceGear Ratio 1/356
sourcehttps://www.zennixtek.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-09-01Changed —
Rated torquerated_torque
valuemeasured at Rated voltage 8.4V · Reduction ratio 1/356
as printed 18.75kg.cm@8.4V1.839 N·m
source sentenceRated torque 18.75kg.cm@8.4V
sourcehttps://www.zennixtek.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-09-01Changed —
Operating voltage rangeoperating_voltage_range
valuemeasured at Reduction ratio 1/356
6-9V
source sentenceOperating Voltage Range 6-9V 9-12.6V
sourcehttps://aifitlab.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-08-28Changed —
Idle currentidle_current
valuemeasured at Rated voltage 8.4V · Reduction ratio 1/356
as printed 26mA@8.4V0.026 A
source sentenceIdle current(at stopped) 26mA@8.4V -
sourcehttps://aifitlab.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-08-28Changed —
No-load speedno_load_speed
valuemeasured at Rated voltage 8.4V · Reduction ratio 1/356
0.142sec/60°(70RPM)@8.4V
source sentenceNo load speed 0.142sec/60°(70RPM)@8.4V 0.263sec/60°@12V
sourcehttps://aifitlab.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-08-28Changed —
Pulse width rangepulse_width_range
valuemeasured at Reduction ratio 1/356
500~2500 μ sec
source sentencePulse width range 500~2500 μ sec 500~2500 μ sec
sourcehttps://aifitlab.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-08-28Changed —
Dead band widthdead_band_width
valuemeasured at Reduction ratio 1/356
≤4 μ sec
source sentenceDead band width ≤4 μ sec ≤4 μ sec
sourcehttps://aifitlab.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-08-28Changed —
Operating voltage rangeoperating_voltage_range
valuemeasured at Reduction ratio 1/356
6-9V
source sentenceOperating Voltage Range 6-9V 9-12.6V
sourcehttps://robotopian.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-09-01Changed —
Idle currentidle_current
valuemeasured at Rated voltage 8.4V · Reduction ratio 1/356
as printed 26mA@8.4V0.026 A
source sentenceIdle current(at stopped) 26mA@8.4V -
sourcehttps://robotopian.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-09-01Changed —
No-load speedno_load_speed
valuemeasured at Rated voltage 8.4V · Reduction ratio 1/356
0.142sec/60°(70RPM)@8.4V
source sentenceNo load speed 0.142sec/60°(70RPM)@8.4V 0.263sec/60°@12V
sourcehttps://robotopian.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-09-01Changed —
Pulse width rangepulse_width_range
valuemeasured at Reduction ratio 1/356
500~2500 μ sec
source sentencePulse width range 500~2500 μ sec 500~2500 μ sec
sourcehttps://robotopian.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-09-01Changed —
Dead band widthdead_band_width
valuemeasured at Reduction ratio 1/356
≤4 μ sec
source sentenceDead band width ≤4 μ sec ≤4 μ sec
sourcehttps://robotopian.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-09-01Changed —
Operating voltage rangeoperating_voltage_range
valuemeasured at Reduction ratio 1/356
6–9V
source sentenceOperating Voltage Range 6–9V
sourcehttps://www.zennixtek.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-09-01Changed —
Idle currentidle_current
valuemeasured at Rated voltage 8.4V · Reduction ratio 1/356
as printed 26mA@8.4V0.026 A
source sentenceIdle current (at stopped) 26mA@8.4V
sourcehttps://www.zennixtek.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-09-01Changed —
No-load speedno_load_speed
valuemeasured at Rated voltage 8.4V · Reduction ratio 1/356
0.142sec/60° (70RPM)@8.4V
source sentenceNo load speed 0.142sec/60° (70RPM)@8.4V
sourcehttps://www.zennixtek.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-09-01Changed —
No-load currentno_load_current
valuemeasured at Rated voltage 8.4V · Reduction ratio 1/356
as printed 500mA@8.4V0.5 A
source sentenceRunning current (at no load) 500mA@8.4V
sourcehttps://www.zennixtek.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-09-01Changed —
Pulse width rangepulse_width_range
valuemeasured at Reduction ratio 1/356
500~2500 µsec
source sentencePulse width range 500~2500 µsec
sourcehttps://www.zennixtek.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-09-01Changed —
Dead band widthdead_band_width
valuemeasured at Reduction ratio 1/356
≤4 µsec
source sentenceDead band width ≤4 µsec
sourcehttps://www.zennixtek.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-09-01Changed —
Stall torquestall_torque
valuemeasured at Rated voltage 8.4V · Reduction ratio 1/356
as printed 75kg.cm@8.4V7.355 N·m
source sentencePeak stall torque 75kg.cm@8.4V 70kg.cm@12V
sourcehttps://aifitlab.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-08-28Changed —
Stall torquestall_torque
valuemeasured at Rated voltage 8.4V · Reduction ratio 1/356
as printed 75kg.cm@8.4V7.355 N·m
source sentencePeak stall torque 75kg.cm@8.4V 70kg.cm@12V
sourcehttps://robotopian.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-09-01Changed —
Stall torquestall_torque
valuemeasured at Rated voltage 8.4V · Reduction ratio 1/356
as printed 75kg.cm@8.4V7.355 N·m
source sentencePeak stall torque 75kg.cm@8.4V
sourcehttps://www.zennixtek.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-09-01Changed —
Bearing typebearing_type
valuemeasured at Reduction ratio 1/356
Ball bearings
source sentenceBearing Ball bearings Ball bearings
sourcehttps://aifitlab.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-08-28Changed —
Bearing typebearing_type
valuemeasured at Reduction ratio 1/356
Ball bearings
source sentenceBearing Ball bearings Ball bearings
sourcehttps://robotopian.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-09-01Changed —
Bearing typebearing_type
valuemeasured at Reduction ratio 1/356
Ball bearings
source sentenceBearing Ball bearings
sourcehttps://www.zennixtek.com/products/feetech-ft870b-servo-motor · Distributor page
EvidenceSourced
Retrieved · Changed2026-09-01Changed —
specs 37, 37 shown
Source documents.
3 sources the values were read from
3 documents
DownloadSource files are not published yet: which documents may be published is undecided.
No change
2026-08-28first collected · 3 sources
Next update2026-10-01
Change history kept
Build a joint around this part.
Once the family is set, this part can go into a joint.
Check joint combinationsJOINT · FT-870B-C001 · Unclassified
StatusNot applicable
- Family not yet set
To settle before a verdict
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