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HPG-50A-21-RA3Add to cart
Series reference image, not this exact model · from harmonicdrive.netHPG-50A-21-RA3 — HPG-50A-21-RA3 — manufacturer part page image1 / 1
哈默纳科（上海）商贸有限公司 · Harmonic Drive Systems

HPG-50A-21-RA3

Unclassified · active · sources 2
specs 18evidence [n]sources 2

No verified public price. Request a quotation from the seller.

500 N·mAllowable average load torque
630 N·mAllowable start/stop torque
15 N·mBackdriving torque
1

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field · keyvaluesource sentencesourceEvidenceRetrieved · Changed
Allowable average load torqueallowable_average_load_torque
value
as printed 500500 N·m
source sentenceLimit for Average Torque 500 Nm
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpg-ra-right-angle/50/hpg-50a-21-ra3 · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-06Changed —
Allowable start/stop torqueallowable_startstop_torque
value
as printed 630630 N·m
source sentenceLimit for Repeated Peak Torque 630 Nm
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpg-ra-right-angle/50/hpg-50a-21-ra3 · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-06Changed —
Backdriving torquebackdriving_torque
value
as printed 1515 N·m
source sentenceBackdriving Torque 15 Nm
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpg-ra-right-angle/50/hpg-50a-21-ra3 · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-06Changed —
Transmission accuracytransmission_accuracy
value
as printed 44 arcmin
source sentenceStandard Accuracy 4 arc min
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpg-ra-right-angle/50/hpg-50a-21-ra3 · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-06Changed —
Allowable start/stop torqueallowable_startstop_torque
valuemeasured at Reduction ratio 21
as printed 630630 N·m
source sentenceHPG-50A-21-RA3 50 170 21 260 450 630 840 4,500 < 3 15 4 18 43 100 6,690 9,980
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpg-ra-right-angle · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Backdriving torquebackdriving_torque
valuemeasured at Reduction ratio 21
as printed 1515 N·m
source sentenceHPG-50A-21-RA3 50 170 21 260 450 630 840 4,500 < 3 15 4 18 43 100 6,690 9,980
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpg-ra-right-angle · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Transmission accuracytransmission_accuracy
valuemeasured at Reduction ratio 21
as printed 44 arcmin
source sentenceHPG-50A-21-RA3 50 170 21 260 450 630 840 4,500 < 3 15 4 18 43 100 6,690 9,980
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpg-ra-right-angle · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Weightweight
valuemeasured at Reduction ratio 21
as printed 1818 kg
source sentenceHPG-50A-21-RA3 50 170 21 260 450 630 840 4,500 < 3 15 4 18 43 100 6,690 9,980
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpg-ra-right-angle · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Reduction ratioreduction_ratio
value
as printed 2121
source sentenceHPG-50A-21-RA3 50 170 21 260 450 630 840 4,500 < 3 15 4 18 43 100 6,690 9,980
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpg-ra-right-angle · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Rated torquerated_torque
valuemeasured at Reduction ratio 21 · Rated life basis Rated Torque L10
as printed 260260 N·m
source sentenceHPG-50A-21-RA3 50 170 21 260 450 630 840 4,500 < 3 15 4 18 43 100 6,690 9,980
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpg-ra-right-angle · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Rated torquerated_torque
valuemeasured at Reduction ratio 21 · Rated life basis Rated Torque L50
as printed 450450 N·m
source sentenceHPG-50A-21-RA3 50 170 21 260 450 630 840 4,500 < 3 15 4 18 43 100 6,690 9,980
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpg-ra-right-angle · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Peak torquepeak_torque
valuemeasured at Reduction ratio 21
as printed 840840 N·m
source sentenceHPG-50A-21-RA3 50 170 21 260 450 630 840 4,500 < 3 15 4 18 43 100 6,690 9,980
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpg-ra-right-angle · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Max input speedmax_input_speed
valuemeasured at Reduction ratio 21
as printed 4,5004500 r/min
source sentenceHPG-50A-21-RA3 50 170 21 260 450 630 840 4,500 < 3 15 4 18 43 100 6,690 9,980
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpg-ra-right-angle · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Backlashbacklash
valuemeasured at Reduction ratio 21
< 3
source sentenceHPG-50A-21-RA3 50 170 21 260 450 630 840 4,500 < 3 15 4 18 43 100 6,690 9,980
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpg-ra-right-angle · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Torsional stiffnesstorsional_stiffness
valuemeasured at Reduction ratio 21 · Stiffness region K1 Torsional Stiffness
as printed 43430000 N·m/rad
source sentenceHPG-50A-21-RA3 50 170 21 260 450 630 840 4,500 < 3 15 4 18 43 100 6,690 9,980
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpg-ra-right-angle · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Output moment stiffnessoutput_moment_stiffness
valuemeasured at Reduction ratio 21
as printed 1001000000 N·m/rad
source sentenceHPG-50A-21-RA3 50 170 21 260 450 630 840 4,500 < 3 15 4 18 43 100 6,690 9,980
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpg-ra-right-angle · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Radial loadradial_load
valuemeasured at Reduction ratio 21
as printed 6,6906690 N
source sentenceHPG-50A-21-RA3 50 170 21 260 450 630 840 4,500 < 3 15 4 18 43 100 6,690 9,980
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpg-ra-right-angle · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
Axial loadaxial_load
valuemeasured at Reduction ratio 21
as printed 9,9809980 N
source sentenceHPG-50A-21-RA3 50 170 21 260 450 630 840 4,500 < 3 15 4 18 43 100 6,690 9,980
sourcehttps://www.harmonicdrive.net/products/servo-mount-gearheads/harmonic-planetary/hpg-ra-right-angle · Maker's document
EvidenceSourced
Retrieved · Changed2026-09-08Changed —
specs 18, 18 shown

Source documents.

2 sources the values were read from

2 documents
DownloadSource files are not published yet: which documents may be published is undecided.
No change
2026-09-06first collected · 2 sources
Next update2026-10-01

Change history kept

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JOINT · HPG-50A-21-RA3 · Unclassified
StatusNot applicable
  • Family not yet set

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Supplier.

WRC 2026 Beijing exhibitors, and other suppliers.

哈默纳科（上海）商贸有限公司Harmonic Drive Systems
WRC2026-B-008Hall BBooth B110CNharmonicdrive.net · official
This supplier's parts 1,815Supplier page

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